To all, (for fear of missing someone!) I have a PET with the feared 6550 Unobtainiums.

It doesn't even get to a prompt, but I suspect the screen full of characters with some blinking and some that change upon an [ENTER] key is telling me a video RAM went south.

...I have toyed with swapping a CD6264 and or multiples into the mother board even going so far as to quick doing an internet circuit board to accomodate them. Time is the major constraint here. I also remember an article or text which referenced adding perhaps a dynamic memory pack from another machine to the expander plug, with an appropriate R & C stobe assembly supplying what the PET didn't have. Whoa, memories!!!!

I have looked at the serial number several times and always neglect to write it down. I early on, 1975 or there abouts, added a reset button to the front panel because of my tendency to lock the silly thing up with my incessant poking around. I know I also have several of the early tomes on the PET in the basement, along with a couple of Kilobaud articles reference the machine. Kev kandres(a)epssecurity.com -----Original Message----- From: cctech-request(a)classiccmp.org [SMTP:cctech-request@classiccmp.org] Sent: Sunday, January 19, 2003 2:56 AM To: cctech(a)classiccmp.org Subject: cctech digest, Vol 1 #320 - 48 msgs Send cctech mailing list submissions to cctech(a)classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit http://www.classiccmp.org/mailman/listinfo/cctech or, via email, send a message with subject or body 'help' to cctech-request(a)classiccmp.org You can reach the person managing the list at cctech-admin(a)classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctech digest..." Today's Topics: 1. Got the second batch of -11 equipment (Bill Bradford) 2. Re: Got the second batch of -11 equipment (Dave McGuire) 3. Re: Update: BBC Acorn (=?iso-8859-1?q?Jules=20Richardson?=) 4. Re: PET 2001 oddity (pete(a)dunnington.u-net.com) 5. RE: MV3100 M90 / VAX 4100 (was: VXT X terminal question) (Antonio Carlini) 6. PET 2001 oddity - solved! (Adrian Vickers) 7. RE: Musings on BabyVAX video (Antonio Carlini) 8. RE: Hobbled NVAX (was: VXT X terminal question) (Antonio Carlini) 9. Re: PET 2001 oddity (Adrian Vickers) 10. Re: PET 2001 oddity (Adrian Vickers) 11. Apple Macintosh- where would this be useful? (Kenneth Donchatz) 12. Re: Apple Macintosh- where would this be useful? (Cameron Kaiser) 13. Re: PET 2001 oddity - solved! (pete(a)dunnington.u-net.com) 14. Re: PET 2001 oddity (pete(a)dunnington.u-net.com) 15. Re: PET 2001 oddity (pete(a)dunnington.u-net.com) 16. RE: Musings on BabyVAX video (Fred deBros) 17. Re: Update: BBC Acorn (pete(a)dunnington.u-net.com) 18. RE: Musings on BabyVAX video (Doc Shipley) 19. Re: VXT X terminal question (Jochen Kunz) 20. Re: VXT X terminal question (Jochen Kunz) 21. BBC Micro - assemblers - info needed (Philip Pemberton) 22. RE: Musings on BabyVAX video (Peter C. Wallace) 23. Re: IBM 5322 (Sellam Ismail) 24. SGI Discussions? was Re: Mac SE/30 accessories availability? (David Holland) 25. PET 2001 oddity (M H Stein) 26. T&B Ansley IDC connectors (M H Stein) 27. PerSci Model 277 Dual 8" Floppy Drives - Info Needed (M H Stein) 28. Re: About Electronics Questions (Tony Duell) 29. RE: Dear Santa, I would like a VAX.... (Zane H. Healy) 30. Re: Dear Santa, I would like a Yamaha CX5M ... (Sellam Ismail) 31. Re: Apple 1 schematics (Tothwolf) 32. Re: Wanted : Pinouts for 9311, 93L14, 8273 chips (David Gesswein) 33. Re: DOS 1.0 (Tothwolf) 34. RE: Hobbled NVAX (Michael Sokolov) 35. New classic (Gareth Knight) 36. RE: VXT X terminal question (Michael Sokolov) 37. MCA Fast Ethernet Cards (vance(a)neurotica.com) 38. Re: SGI Discussions? (Brian Chase) 39. RE: VXT X terminal question (Antonio Carlini) 40. RE: Musings on BabyVAX video (r. 'bear' stricklin) 41. Re: SGI Discussions? was Re: Mac SE/30 accessories availability? (r. 'bear' stricklin) 42. RE: VXT X terminal question (Fred N. van Kempen) 43. Apple 1 schematics (chris) 44. RE: VXT X terminal question (Fred N. van Kempen) 45. RE: VXT X terminal question (Michael Sokolov) 46. Re: Apple 1 schematics (Eric Smith) 47. Re: Got the second batch of -11 equipment (John Honniball) 48. Re: Apple 1 schematics (John Honniball) --__--__-- Message: 1 Date: Sat, 18 Jan 2003 15:11:17 -0600 From: Bill Bradford &lt;mrbill(a)mrbill.net&gt; To: cctech(a)classiccmp.org Subject: Got the second batch of -11 equipment Reply-To: cctech(a)classiccmp.org Unfortunately, the actual "machine" (the guy didnt know that the MINC-11 was a system as well) is just an 11/23 with some RL01s. Pictures: http://www.pdp11.org/minc/01-18-03/ I have no idea if the RL01 disk packs are any good, but I've got one DEC-labled RT-11 v4.0, and one hand-labeled RT-11 v4.0C "patched to level F". The top RL01 is missing the hinged cover. Anybody want two RL02s (by the way, how the hell do I get the top covers open? The "switch" on the top wont budge), and two RL01s? Pickup in Austin, Texas.. Not a bad haul for a total of $30, even if I do just keep the 11/23 and the MINC-11 and the racks. Bill -- bill bradford mrbill(a)mrbill.net austin, texas --__--__-- Message: 2 Date: Sat, 18 Jan 2003 16:58:47 -0500 Subject: Re: Got the second batch of -11 equipment From: Dave McGuire &lt;mcguire(a)neurotica.com&gt; To: mrbill(a)mrbill.net, cctech(a)classiccmp.org Reply-To: cctech(a)classiccmp.org On Saturday, January 18, 2003, at 04:11 PM, Bill Bradford wrote: The top door latch on an RL drive is locked by a solenoid. Apply power to the drive, make sure the "load" button is out, wait for a "click" (the load light will come on) then you should be able to squeeze that little slide handle and open the top cover. I would really like to have the RL02s but I have no idea how I'd get them from you. :-( -Dave -- Dave McGuire "She's a cheek pincher. I have scars." St. Petersburg, FL -Gary Nichols --__--__-- Message: 3 Date: Sat, 18 Jan 2003 10:23:31 +0000 (GMT) From: =?iso-8859-1?q?Jules=20Richardson?= &lt;julesrichardsonuk(a)yahoo.co.uk&gt; Subject: Re: Update: BBC Acorn To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org 25-ANC13-1000038. well if Rob's was the last then they obviously didn't do a very good job of numbering things :-) Unless Rob's was the last one released by Acorn, but they all sat in storage for a while... no discs at all I'm afraid :-( hence why I was asking about whther there's a sensible ftp site to put them on so if a working set can be collected at least they can be archived somewhere (the same goes for manuals really, but scanning those would be a major pain I expect!) that used to be the problem - the hardware used to get thrown out but discs would lie around on shelves until someone did a bit of spring cleaning now and then; they would have been trashed seperately and maybe straight into a bin in the office :-( cheers Jules (who has too many systems that don't work for lack of necessary discs :-) __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com --__--__-- Message: 4 Date: Sat, 18 Jan 2003 11:37:37 GMT From: pete(a)dunnington.u-net.com To: cctalk(a)classiccmp.org Subject: Re: PET 2001 oddity Reply-To: cctech(a)classiccmp.org On Jan 17, 18:18, Adrian Vickers wrote: take got a question Swap some of the RAM chips around and see if it makes a difference. If it does, particularly if it fixes it, swap them back -- it might just be a bad socket contact. Be careful with the RAM chips: if you have the type of PET I think you do, they're MOS Technology 6550, aka unobtainium, and unlike any other RAM chip. No. BASIC (and also the rest of the code, whether you call it a kernel or a monitor, or "stuff") is spread over several chips. And in the early PETs, the ROMs too are MOS Technology specials, and the different versions of PETs had different ROMs. In fact, there was an upgrade for the originals, because they didn't handle the IEEE routines properly, which made it impossible to use disks properly (amongst other things). have an follow.... If it's a later unit with 24-pin 2332 mask ROMs, then a TMS2532 EPROM can be used (not a 2732, nor other 2532s that don't have the TMS prefix). If it's got 28-pin MOS Technology MPS6540 ROMs, you'd need a carrier to shuffle some signals, at the very least, and possibly some logic to handle the multiple select lines. The good news, though, is that I have a chicklet-keyboard 2001-N as well, and if necessary, I could probably do a ROM dump for you (though IIRC it used to be on the 'net somewhere). I wouldn't need to move more than a few hundreweight of stuff to get at it ;-) -- Pete Peter Turnbull Network Manager University of York --__--__-- Message: 5 From: "Antonio Carlini" &lt;arcarlini(a)iee.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: MV3100 M90 / VAX 4100 (was: VXT X terminal question) Date: Sat, 18 Jan 2003 11:48:41 -0000 Organization: me@home Reply-To: cctech(a)classiccmp.org I'm fairly sure the mainboards are identical (i.e. the same part number). I've never been inside a VAX 4000-100 so I've never had the chance to personally check this, but the last time I saw a parts list, the part numbers were the same. It's stored in the flash EPROM - it rewrites it as part of the test (and warns you not to switch off while it is doing so). The change is permanent (until you run the test again and switch back). I doubt HP care whether customers know this or not now. I doubt they cared even back then: switching from a UV3100-90 to a VAX 4000-100 didn't get you anything extra (unless you paid for a new case) and it did cost you more in licence fees. Switching the other way disabled Qbus and DSSI, so although your licence cost you less, you got less for it. And if you wanted the cheaper licence you would have bought the cheaper machine anyway! Antonio -- --------------- Antonio Carlini arcarlini(a)iee.org --__--__-- Message: 6 Date: Sat, 18 Jan 2003 13:28:22 +0000 To: cctalk(a)classiccmp.org From: Adrian Vickers &lt;avickers(a)solutionengineers.com&gt; Subject: PET 2001 oddity - solved! Reply-To: cctech(a)classiccmp.org --=======74632786======= Content-Type: text/plain; x-avg-checked=avg-ok-671DF1C; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Woohoo! Turned out to be dead simple; yet another blown 2114. I figured the chip @ $0400 (i.e. the start of BASIC) was faulty, seeing as how the machine wouldn't take a single line of BASIC. So, I swapped the appropriate bank out to another bank - and presto! BASIC worked again. Having done this, I then swapped *one* of the two chips (according to the schematic, there are two chips for each $0400 block of memory - why is this?) back to its original spot, and presto again - no BASIC. Swapped that chip for the one remaining spare, and presto^3! BASIC again. So, now I need more 2114's as an insurance policy... Meanwhile, I thank the list *again* for their invaluable help (Ethan, Mike & Pete in particular in this case). What would I do without you (except preside over a collection of steadily failing machines)? -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com --=======74632786=======-- --__--__-- Message: 7 From: "Antonio Carlini" &lt;arcarlini(a)iee.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: Musings on BabyVAX video Date: Sat, 18 Jan 2003 12:06:37 -0000 Organization: me@home Reply-To: cctech(a)classiccmp.org SPX will go into KA42s - although I don't know for sure whether it was ever sold and supported. It will probably plug into a VS2K but I have no idea whether it will work (or whether anything would run on it without more code being written). You are probably right - I just threw in "as necessary" because I don't have a KA42 block diagram handy (in fact, I may not have one at all - there is not much info floating around on these and the early UVAX 3100 systems). I don't know why they rolled their own. Given that they used or modified existing designs where possible, I assume that there were good reasons. Perhaps the existing design was too slow or took up too much room (this latter consideration was definitely very important for the -90). No - and I could never find any even while I was inside DEC. There must have been *some* such documentation but it was nowhere I could find. There's not a lot of technical info on the KA43 either! Typo. hardware. Yes, I've read that one and it's not the one. I was sure that there was an article describing the VXT2000 itself, but I guess since I cannot find it either on the web or in my docs, I must have imagined it. Oh well. Antonio -- --------------- Antonio Carlini arcarlini(a)iee.org --__--__-- Message: 8 From: "Antonio Carlini" &lt;arcarlini(a)iee.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: Hobbled NVAX (was: VXT X terminal question) Date: Sat, 18 Jan 2003 12:11:19 -0000 Organization: me@home Reply-To: cctech(a)classiccmp.org I assume so too. I doubt that non-hobbled firmware exists. I doubt you could just use the UV3100-96 firmware upgrade on a UV3100-85 and have it work. In fact, I guess the firmware is the same but it looks at the machine's hardware (e.g. size and config of backup cache or something like that) to determine what it is running on, and disables the VIC if it thinks the machine is a UV3100-85. The easiest thing to do would be to try reenabling the VIC. If that is not enough, you would have to find the bit of code that disables the VIC and NOP it out. I doubt that the code was protected too much: it would have been way beyond most customers' ability to alter it. Antonio -- --------------- Antonio Carlini arcarlini(a)iee.org --__--__-- Message: 9 Date: Sat, 18 Jan 2003 12:49:24 +0000 To: cctalk(a)classiccmp.org From: Adrian Vickers &lt;avickers(a)solutionengineers.com&gt; Subject: Re: PET 2001 oddity Reply-To: cctech(a)classiccmp.org --=======54493991======= Content-Type: text/plain; x-avg-checked=avg-ok-671DF1C; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit At 06:41 18/01/2003, Ethan Dicks wrote: OK, I can but try.... According to the sticker on the back, this is a 2001-8BS. The motherboard layout appears to be the same as the one pictured on www.zimmers.net on the 4k/8k layout. I've taken some photos of my motherboard, which can now be found here: http://helmies.org.uk/images/cbm2001/mobo_front.jpg http://helmies.org.uk/images/cbm2001/mobo_back.jpg http://helmies.org.uk/images/cbm2001/mobo_side.jpg NOTE: Each picture is approx 449K = long download over a modem! States, Apologies, I didn't; I keep forgetting that the 2001 went through more development than perhaps any of the other PETs. Yes, it is a chicklet keyboard version, with static RAM (2114's) and original 28-pin MOS ROMs. got Personally, I'd rather keep this one as original as possible, i.e. keep the original (buggy) ROMs. However, if it means keeping it working, then I'm prepared to substitute the MOS ROMs with a board/set of boards containing more modern EPROMs wired appropriately containing the original images. Not that I've got a clue how to go about doing that, mind... applications Well, there are no unpolulated sockets, so perhaps it's a fair bet that there's some extra stuff in there. Goodness knows what, though, all the ROMs are MOS 6540's. I Figures :( I've had to do this once already to locate a broken 2114 (when I got the machine, it claimed only 1600 bytes of memory were free). Luckily, I have one more spare 2114 (I got two from someone on this list, I forget who [for which I apologise] and thank them (again) profusely, as if it is a broken 2114, there's a chance the second spare might be essential). Anyway, if it *is* a failing RAM chip, my guess is it's the one which sits near the bottom of BASIC memory, since the first line number causes a crash. Does anyone have a map showing the correlation between memory addresses & specific chips? If it's on the schematics, I'll be looking there next (so no need to answer that question). <snip the rest for brevity> Ta for that, all good info! Thus, the order of the day is: 1) Try to determine which 2114 chip might have gone bad, either by sequenced swapping or by trying to be clever with the schematics. 2) If that doesn't fix it, re-seat all ROMs. 3) If that doesn't fix it, go to plan C - which doesn't exist yet... Also, I know this has been asked & answered before, but what's the best way of cleaning the board? It has more dust on it than I am properly comfortable with, and besides it looks horrible. I'm guessing that *ideally* it should be washed in distilled water with a very soft brush, then left in a warm place to dry thoroughly. OTOH, maybe alcohol would be a better idea? I have some disc head cleaning alcohol which would suffice - recommendations please! Thanks - I'm going to need that (in place of specific skills :) I already knew of it, but had forgotten how useful it might be. Will check that out next. Ta! -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com --=======54493991=======-- --__--__-- Message: 10 Date: Sat, 18 Jan 2003 12:55:43 +0000 To: cctalk(a)classiccmp.org From: Adrian Vickers &lt;avickers(a)solutionengineers.com&gt; Subject: Re: PET 2001 oddity Reply-To: cctech(a)classiccmp.org --=======37E27F29======= Content-Type: text/plain; x-avg-checked=avg-ok-671DF1C; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit At 11:37 18/01/2003, you wrote: >On Jan 17, 18:18, Adrian Vickers wrote: > > > > Unfortunately, the PET seems to have developed an odd fault: It won't >take > > > > So.... I figure the BASIC ROM has become slightly corrupted, OR I've got >a > >question > > >Swap some of the RAM chips around and see if it makes a difference. If it bad PET Hi Pete, It's not *quite* as bad as all that, it uses 2114's. Although they're not made of unobtainum, they ARE made of "rareium" (or R@RE!ium on eBay - probably the *WOW* *L@@K* isotope, knowing my luck :). In or Damn, I just *knew* it wouldn't be that easy. versions AFAICT, these are version 1 ROMs. Every socket is filled, and they're all MOS6540s. handle Harrumph. Guess which one it has... Still, I've no fear of making carriers, etc. - albeit time constraints & lack of equipment will make it tough right now - at least until I can get my MicroMAT going. a That might be cool (and *snap* about the tons of stuff, although having seen your little collection I think you do have rather more to shift about than me!). However, let me try out the RAM swapping & chip re-seating first, and if that doesn't fix it, then we'll look into EPROMs & suchlike. -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com --=======37E27F29=======-- --__--__-- Message: 11 Date: Sat, 18 Jan 2003 05:40:46 -0800 (PST) From: Kenneth Donchatz &lt;kendonchatz(a)yahoo.com&gt; Subject: Apple Macintosh- where would this be useful? To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org --0-1341891654-1042897246=:19979 Content-Type: text/plain; charset=us-ascii I have a 13 year old apple macintosh that works like a dream. It's loaded with programs, and this great little machine got me through law school and helped me launch my career. When my employer switched over to a compaq system, I could no longer use this machine to work on projects at home and was forced to pick up an etower package instead. For the last 5 years, it's sat in my basement waiting. Everything works perfectly, including the printer, and all of the parts are original. Any tips on where I might take this machine so that it can be used? It's a shame to let it sit here and rot. Ken Donchatz kendonchatz(a)yahoo.com Columbus, Ohio --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now --0-1341891654-1042897246=:19979 Content-Type: text/html; charset=us-ascii <P>I have a 13 year old apple macintosh that works like a dream.&nbsp; It's loaded with programs, and this great little machine got me through law school and helped me launch my career.&nbsp; When my employer switched over to a compaq system, I could no longer use this machine to work on projects at home and was forced to pick up an etower package instead.&nbsp; For the last 5 years, it's sat in my basement waiting.&nbsp; Everything works perfectly, including the printer, and all of the parts are original.&nbsp; Any tips on where I might take this machine so that it can be used? It's a shame to let it sit here and rot. </P> <P>Ken Donchatz </P> <P><A href="mailto:kendonchatz@yahoo.com">kendonchatz@yahoo.com</A></P> <P>Columbus, Ohio</P><p><br><hr size=1>Do you Yahoo!?<br> <a href="http://rd.yahoo.com/mail/mailsig/*http://mailplus.yahoo.com"…uot;>Yahoo! Mail Plus</a> - Powerful. Affordable. <a href="http://rd.yahoo.com/mail/mailsig/*http://mailplus.yahoo.com"… up now</a> --0-1341891654-1042897246=:19979-- --__--__-- Message: 12 From: Cameron Kaiser &lt;spectre(a)stockholm.ptloma.edu&gt; Subject: Re: Apple Macintosh- where would this be useful? To: cctalk(a)classiccmp.org Date: Sat, 18 Jan 2003 06:09:47 -0800 (PST) Reply-To: cctech(a)classiccmp.org Which model? -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- Of course I run NetBSD. --------------------------------------------- ------- --__--__-- Message: 13 Date: Sat, 18 Jan 2003 15:34:45 GMT From: pete(a)dunnington.u-net.com To: cctalk(a)classiccmp.org Subject: Re: PET 2001 oddity - solved! Reply-To: cctech(a)classiccmp.org On Jan 18, 13:28, Adrian Vickers wrote: as Good! the A 2114 is 1K x 4 bits wide, so they're used in pairs to make bytes. -- Pete Peter Turnbull Network Manager University of York --__--__-- Message: 14 Date: Sat, 18 Jan 2003 15:11:59 GMT From: pete(a)dunnington.u-net.com To: cctalk(a)classiccmp.org Subject: Re: PET 2001 oddity Reply-To: cctech(a)classiccmp.org Hi, Ade. On Jan 18, 12:55, Adrian Vickers wrote: not Good! If it *is* a RAM fault, and you can't find one at a reasonable price, let me know. I think I still have a small number spare. all Drat. Let's hope it's not a ROM fault. Sadly, my copy of "The PET Revealed" with its mostly-legible (!) circuit diagrams, shows the later board with 2332s. But I do have a copy of the MPS6540 pinout somewhere. & get do a it about suchlike. OK. Give me shout if you want me to start burrowing. Or come and pay a visit... -- Pete Peter Turnbull Network Manager University of York --__--__-- Message: 15 Date: Sat, 18 Jan 2003 15:29:23 GMT From: pete(a)dunnington.u-net.com To: cctalk(a)classiccmp.org Subject: Re: PET 2001 oddity Reply-To: cctech(a)classiccmp.org On Jan 18, 12:49, Adrian Vickers wrote: ROMs. Then there's no extras. The MOS Technology 6540 ROMs are half the capacity of the 2332s in later boards, so there are seven of them in a standard PET and no spare sockets. (when list, I if essential). I think it was me (and I think you already said thankyou :-)) way a maybe Start by vacuuming it with a powerful vacuum and a soft, small, paintbrush (about 1/2" - 1") to help disldge the dirt. You might not need to wash it after that. It's not too important for a board like this, but the air rushing through a plastic vacuum nozzle can generate a surprising amount of static, so ideally the nozzle should be conductive, and grounded. If you do wash it, use some detergent, do not get it too hot, rinse with distilled water and a *very small* amount of wetting agent (to help the water drain). Blowing off the excess with low-pressure compressed air and/or rinsing in IPA or meths (which mix with water and helps remove it) may also be a good idea. Do make sure you get all the water out of places like IC sockets, switches, and connectors, as residues may eventually lead to corrosion. In extreme cases, or where I've had a lot of boards to clean, I've used the dishwasher -- but do not let the dishwasher do the normal drying cycle as it's too hot for safety. Some dishwashers seem to use very hot water, too, and some types of PCB and some types of plastic don't like that. Don't use a dishwasher on boards that have non-sealed relays, transformers, paper labels, etc. -- Pete Peter Turnbull Network Manager University of York --__--__-- Message: 16 From: "Fred deBros" &lt;fdebros(a)verizon.net&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: Musings on BabyVAX video Date: Sat, 18 Jan 2003 10:34:21 -0500 Reply-To: cctech(a)classiccmp.org I'm pretty sure that a VS3100-76 with no graphics board *will* come up using onboard monochrome (use the green signal). I don't think I've ever actually used one this way, but I do know that the GPX and SPX options came with a little stick-on panel that said either "GPX" or "SPX" in about the right size and font to stick right after the "VAXstation 3100 M76" nameplate. Mine does and it is just a matter on which pin you pick it up in the back of the box! I'd have to go to my office to ck it again. Fred --__--__-- Message: 17 Date: Sat, 18 Jan 2003 15:42:37 GMT From: pete(a)dunnington.u-net.com To: cctalk(a)classiccmp.org Subject: Re: Update: BBC Acorn Reply-To: cctech(a)classiccmp.org On Jan 18, 10:23, Jules Richardson wrote: > > > no discs at all I'm afraid :-( hence why I was asking about whther there's a at least scanning Well, someone else has offered to copy Disc 1 for me. I've also found a few other people who have ARM Evaluation Systems, so once I get a good Disc 1, I'll put the set of six on my website (and if anyone from any of the Beeb sites wants to make a copy, that's fine by me). Any suggestions as to format to use for the images? I've also just been told that the production run of ARM (not ARM2) chips was 2000. I know some were used in-house for other types of development system (like the A500) and more were used for Springboard (an ISA card, the PC equivalent of the ARM Development System), so 50 or 100 seem likely numbers for the quantity of ARM Development Kits made to fit Beebs. -- Pete Peter Turnbull Network Manager University of York --__--__-- Message: 18 Date: Sat, 18 Jan 2003 10:09:30 -0600 (CST) From: Doc Shipley &lt;doc(a)mdrconsult.com&gt; To: cctalk(a)classiccmp.org Subject: RE: Musings on BabyVAX video Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, Antonio Carlini wrote: I'll look when I get home (next month), but I'm pretty sure one of my VS3100 m38 machines was labelled SPX from the factory. Doc --__--__-- Message: 19 Date: Sat, 18 Jan 2003 15:21:03 +0100 From: Jochen Kunz &lt;jkunz(a)unixag-kl.fh-kl.de&gt; To: cctalk(a)classiccmp.org Subject: Re: VXT X terminal question Reply-To: cctech(a)classiccmp.org On Fri, Jan 17, 2003 at 11:38:58PM -0000, Antonio Carlini wrote: Well, the enclosure is the same. It is only a set of additional connectors on the back an internal cabling. At least I interpreted pictures of a VAX4k105 this way. But all I need is the pinout. Building some cables is no problem and I have a QBus backplane from a dead and rotten BA23. I have a MV II, MV III, MV3900, MV4k200, VAX4k300, VAX4k400 and a PDP11-73. Enough QBus boxen to play. OK. I miss a KA640 based machine. But none of them brings that power in that small footprint and is easy to interface to lots of storage, i.e. SCSI. -- tschu?, Jochen Homepage: http://www.unixag-kl.fh-kl.de/~jkunz --__--__-- Message: 20 Date: Sat, 18 Jan 2003 12:29:24 +0100 From: Jochen Kunz &lt;jkunz(a)unixag-kl.fh-kl.de&gt; To: cctalk(a)classiccmp.org Subject: Re: VXT X terminal question Reply-To: cctech(a)classiccmp.org On Sat, Jan 18, 2003 at 10:50:58AM +0100, Fred N. van Kempen wrote: to Someone on the PUPS / TUHS list has ported 4.3BSD-Tahoe and / or 4.3BSD-Reno to the VAX4000-7xx. AFAIK he had some porblems with interrupts at autoconfig time, but got it running. -- tschu?, Jochen Homepage: http://www.unixag-kl.fh-kl.de/~jkunz --__--__-- Message: 21 From: "Philip Pemberton" &lt;philpem(a)dsl.pipex.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: BBC Micro - assemblers - info needed Date: Sat, 18 Jan 2003 16:16:39 -0000 Reply-To: cctech(a)classiccmp.org Hi all, I've just downloaded three assemblers from the ROM archive at http://bbc.nvg.org . Catch is, none of them include manuals. I've got copies of: VASM65 v2.0E by Vida Rebus ASM 1.10 by SYSTEM (claims to be the "ASM 6502 Macro assembler V1.10", "Copyright (C) 1984 SYSTEM"). Contains text strings like "Press play", so may be a tape->ROM conversion. ROMAS 3.02 by TBK Associates (full copyright string = "ROMAS 3.02 (C)1985 TBK Associates - S.C." Has anyone here got any documentation for these assemblers? I'd like to get at least one of them to assemble *something*. Perhaps a "Hello World" program? Also, Vasm outputs Intel Hex files from what I can gather - does anyone here have an Intel Hex -> Binary converter for the BBC Micro? Finally, does anyone know how some discs were formatted so they were compatible with 40-track and 80-track disc drives? Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/ --__--__-- Message: 22 Date: Sat, 18 Jan 2003 09:07:36 -0800 (PST) From: "Peter C. Wallace" &lt;pcw(a)mesanet.com&gt; To: cctalk(a)classiccmp.org Subject: RE: Musings on BabyVAX video Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, Antonio Carlini wrote: I have a few VT1300's with SPX badges and SPX cards inside, so at least the Xterm verison of the KA42/SPX seems to have been supported... Peter Wallace --__--__-- Message: 23 Date: Sat, 18 Jan 2003 09:23:06 -0800 (PST) From: Sellam Ismail &lt;foo(a)siconic.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Re: IBM 5322 Reply-To: cctech(a)classiccmp.org On Fri, 17 Jan 2003, Tony Duell wrote: and I was wondering what that connector was. Now I know :) Cool, after the punch card project I actually know what you're talking about ;) Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------ ------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com * --__--__-- Message: 24 Subject: SGI Discussions? was Re: Mac SE/30 accessories availability? From: David Holland &lt;dholland(a)woh.rr.com&gt; To: Classic Computer Talk &lt;cctalk(a)classiccmp.org&gt; Date: 18 Jan 2003 13:07:13 -0500 Reply-To: cctech(a)classiccmp.org Wot about SGI Crimson's? (Or in my case, a Power Series frame, w/ Crimson boards in it) Or are they too new (and LARGE :-) ) for the list? (Now for the possibly Off List questions of my post) I'd like to get hold of a Reality Engine for it as mine (alas) only has a VGXT boardset. Anyone know where I could find one? I'd also be interested if anyone has interfaced a Sun Type 5 mouse to it, as they look like they use the same protocol, just one is +5v logic, the other is RS232? (Maxim's MAX232's sound vaguely useful, but they're hard to find around here in 1sie 2sie counts) (The optical mouse I have for it is in too bad a shape to be really usable anymore - the felts shot, and it sticks to the metal plate/mouse pad too much for my tastes.) The whole thing that torque's me off the worst about it is.. its 3x's bigger than my PC, and its 3x's quieter... :) Anyways, If I'm off list focus, someone point it out to me, and I'll hush, and wait for the Apple II stuff to respond too.. :-) David On Fri, 2003-01-17 at 23:19, Brian Chase wrote: first SGI it's at it browser took close was the --__--__-- Message: 25 From: M H Stein &lt;mhstein(a)canada.com&gt; To: "'ClassicComputers'" &lt;cctalk(a)classiccmp.org&gt; Subject: PET 2001 oddity Date: Sat, 18 Jan 2003 13:19:36 -0500 Reply-To: cctech(a)classiccmp.org Ethan: thanks for the info; I've never seen a dynamic RAM 2001N, although a friend of mine home-brewed a static > dynamic conversion. 4032s of course, but I take it you're talking about a real small-B/W-screen 2001. I sometimes toy with the idea of building a PET using modern chips; shouldn't be too big a deal (very low on my to-do list though). Adrian: Was working on adding my .02 to the discussion, but read on and saw that you're in business. If you can't find any locally, I've got several tubes of 2114s here in frosty Canada. And they are used in pairs because they're only 4 bits wide (x 1K). One of my PETs, with an MTU graphics board, is dead as well; this discussion just might motivate me to have a look at it. Good luck! mike --__--__-- Message: 26 From: M H Stein &lt;mhstein(a)canada.com&gt; To: "'ClassicComputers'" &lt;cctalk(a)classiccmp.org&gt; Subject: T&B Ansley IDC connectors Date: Sat, 18 Jan 2003 13:25:29 -0500 Reply-To: cctech(a)classiccmp.org ---------------Original Message--------------- Subject: T&B Ansley IDC connectors From: "Jeffrey H. Ingber" &lt;jingber(a)ix.netcom.com&gt; Date: 17 Jan 2003 19:17:20 -0500 Does anyone know where I can aquire the T&B ansley "light blue" IDC ribbon cable connectors that were used by MITS? Googling reveals that Tyco purchased this line of connectors in 2001, but I can't find any mention of T&B Ansley on their web site. Thanks, Jeff ------------------------------------------------------- Used to use a lot of these & have a few left; Exactly which ones are you looking for? mike --__--__-- Message: 27 From: M H Stein &lt;mhstein(a)canada.com&gt; To: "'ClassicComputers'" &lt;cctalk(a)classiccmp.org&gt; Subject: PerSci Model 277 Dual 8" Floppy Drives - Info Needed Date: Sat, 18 Jan 2003 13:29:05 -0500 Reply-To: cctech(a)classiccmp.org ---------------------Original Message------------------------- From: "Tim Myers" &lt;tim.myers(a)sunplan.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: PerSci Model 277 Dual 8" Floppy Drives - Info Needed Does anyone have any info on these drives? I have some in a CP/M system (Ithaca Intersystems DPS-1), and they seem completely dead. They have an electric load mechanism, but when I insert a disk, nothing happens. Popped the case and can't see anything obviously out of place. Tim. ------------------------------------------------------------------------- Cromemco used these in early models of the System 3; not exactly the most reliable. Sorry to say, I scrapped several of them a year ago and, although I've got manuals for most Cromemco stuff I don't think I've got any docs on these. But I'll have a look and let you know if I find anything. Meanwhile, there are probably several people on this list who have them and could perhaps at least compare notes with ya. They are getting power? Good luck, mike --__--__-- Message: 28 From: ard(a)p850ug1.demon.co.uk (Tony Duell) Subject: Re: About Electronics Questions To: cctalk(a)classiccmp.org Date: Sat, 18 Jan 2003 19:32:58 +0000 (GMT) Reply-To: cctech(a)classiccmp.org Agreed (why do you think I have a few _thousand_ scheamtics/repair manuals...). However, the schematic is not always available (maybe not anywhere any more), so it can be useful to be able to make guesses and 'find your way aobut' without a schematic. Alas this comes with (a lot of) practice... Hmmm.. Not always. I've had a number of HP98x0 machines on the bench in the last few months. I've had to change _one_ electrolytic capacitor and about 20 TTL chipes (particularly 74Hxx parts). And we all know that 2114 RAM chips are often dead... -tony --__--__-- Message: 29 Date: Sat, 18 Jan 2003 19:13:48 -0800 To: cctalk(a)classiccmp.org From: "Zane H. Healy" &lt;healyzh(a)aracnet.com&gt; Subject: RE: Dear Santa, I would like a VAX.... Reply-To: cctech(a)classiccmp.org That's one nice VAX, I'm glad it's on the other side of the pond :^) A good indication that it's a TZ30 is that it's a half-height drive. The TZ30 is the only half-height drive that uses Compact-Tapes. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ | --__--__-- Message: 30 Date: Sat, 18 Jan 2003 19:26:42 -0800 (PST) From: Sellam Ismail &lt;foo(a)siconic.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Re: Dear Santa, I would like a Yamaha CX5M ... Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, Cameron Kaiser wrote: It's its Yes, and I helped them get rid of it by taking it away for them ;) Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------ ------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com * --__--__-- Message: 31 Date: Sat, 18 Jan 2003 21:38:05 -0600 (CST) From: Tothwolf &lt;tothwolf(a)concentric.net&gt; To: Classic Computer &lt;cctalk(a)classiccmp.org&gt; Subject: Re: Apple 1 schematics Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, chris wrote: Apple exist know send Ok, I guess its time I post on the list about this... I've been thinking about this very project for sometime. The main problems that I came up with are: 1. certain parts are difficult to find 2. ROM source and/or binary image availability 3. re-creating the pc boards The first problem should be possible to overcome either by finding a stock of surplus parts, or should significant demand exist, having the parts made by a company that specializes in fabricating out of production parts. I've actually looked into the later a couple times in the past, and the prices didn't seem to be out of line. I've even wondered if it would be possible to get a copy of the mask from Intel for say the i8008 or i4004 and have reproductions made. The second and third problems may be slightly more difficult to overcome. One option would be to find an Apple 1, dump the ROMs, carefully unsolder all the parts and scan each side of the cleaned pc boards. The scanned images can then be used to create gerber files. I personally don't have the funds to go out and buy an Apple 1, and I don't know of anyone who would give up one just for it to be taken to bits. Another option for the second and third problems is to contact Woz and see if he would be willing to help. I have so far restrained myself from emailing him, since I know he gets tons and tons of emails, including people asking him if he has an Apple 1 he could give them, etc. I'd imagine Woz would very much like to see the Apple 1 preserved, but it would probably take him quite a bit of time to find all the docs and info that we'd need. -Toth --__--__-- Message: 32 Date: Sat, 18 Jan 2003 22:41:14 -0500 From: David Gesswein &lt;djg(a)drs-esg.com&gt; To: cctalk(a)classiccmp.org Subject: Re: Wanted : Pinouts for 9311, 93L14, 8273 chips Reply-To: cctech(a)classiccmp.org Subject: Wanted : Pinouts for 9311, 93L14, 8273 chips Fairchild 9311 (4 bit -> 16 line decoder?) 1 of 16 decoder 1 : 0 2 : 1 3 : 2 4 : 3 5 : 4 6 : 5 7 : 6 8 : 7 9 : 8 10 : 9 11 : 10 12 : Gnd 13 : 11 14 : 12 15 : 13 16 : 14 17 : 15 18 : E1 19 : E2 20 : A3 21 : A2 22 : A1 23 : A0 24 : Vcc E1 and E2 both low to enable output. Outputs 0-15 are active low Fairchild 93L14 (latch?) Probably same as NSC http://www.national.com/ds/93/93L14.pdf Signetics 8273 (10 bit serial-in, parallel out shift register) 1 : Q6 2 : Q7 3 : Q8 4 : Q9 5 : Q10 6 : ClK1/ 7 : CLK2 8 : Gnd 9 : Clr/ 10 : Serial In 11 : Q1 12 : Q2 13 : Q3 14 : Q4 15 : Q5 16 : Vcc Clk2 low and clk1 works clk1 high and clk2 works clk1 feeds an inverter then is ored with clk2 and result inverted to clock the flip flops. David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights. --__--__-- Message: 33 Date: Sat, 18 Jan 2003 21:53:42 -0600 (CST) From: Tothwolf &lt;tothwolf(a)concentric.net&gt; To: cctalk(a)classiccmp.org Subject: Re: DOS 1.0 Reply-To: cctech(a)classiccmp.org On Mon, 13 Jan 2003, Live Wire wrote: in I use 'joe' constantly myself. It's my day to day editor for editing source code. I have used vi and vim somewhat, but I've honestly not yet taken the time to learn vi as well as I should. I'm sure I must be missing out by not using vi (well, thats what other software developers tell me), but joe is fast and does what I need it to. Somewhere, I have a complete Wordstar set for the Apple II. IIRC, I pulled it and some other complete Apple II software from a trash pile back in 1998 or so. -Toth --__--__-- Message: 34 Date: Sat, 18 Jan 03 11:13:01 PST From: msokolov(a)ivan.Harhan.ORG (Michael Sokolov) To: cctalk(a)classiccmp.org Subject: RE: Hobbled NVAX Reply-To: cctech(a)classiccmp.org Antonio Carlini &lt;arcarlini(a)iee.org&gt; wrote: Umm, I don't think so. It looks like the firmware is the only difference between M85 and the equivalent M9x model and the hardware is the same. In this case flashing M9x firmware would obviously give you the M9x model. But even if the M85 board was really different in B-cache or something from all M9x models, I doubt that the firmware could detect this by "looking at the hardware". AFAIK it's the firmware that has to tell the chips how the board is configured, not the other way around. If indeed the hobbled and non-hobbled firmware are the same code, what it looks at to make the decision is most probably a flag in the second longword of the ROM. Well, if it munges the microcode I would go for option 2 in any case. BTW, do you know for sure that it really munges the microcode and not just disables the VIC in the same way normal caches from CVAX onward can be enabled and disabled as you like? MS --__--__-- Message: 35 From: "Gareth Knight" &lt;knight.beat(a)ntlworld.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: New classic Date: Sat, 18 Jan 2003 19:20:36 -0000 Reply-To: cctech(a)classiccmp.org http://c64upgra.de/c-one/s_pictures.htm First pictures of the CommodoreOne pre-production board are now online: ""the pictures section has been extended by 11 pictures of the pre-production board. Basic testing has already been done, all chips are responding positively to diagnostic access. A 100% test procedure will be developed this weekend." -- Gareth Knight Amiga Interactive Guide | Team *AMIGA* member http://amiga.emugaming.com | http://www.amigau.com/aig/index.html --__--__-- Message: 36 Date: Sat, 18 Jan 03 11:28:06 PST From: msokolov(a)ivan.Harhan.ORG (Michael Sokolov) To: cctalk(a)classiccmp.org Subject: RE: VXT X terminal question Reply-To: cctech(a)classiccmp.org Fred N. van Kempen &lt;Fred.van.Kempen(a)microwalt.nl&gt; wrote: Why can't you compile and use the V4.20 kernel on your V4.50 system? BTW, have you tried booting VXT on different VS3100s? I would really like to use a KA43 for my own VXT if possible, but I need to know if it is or not. MS --__--__-- Message: 37 Date: Sat, 18 Jan 2003 15:23:31 -0500 (EST) From: vance(a)neurotica.com To: cctalk(a)classiccmp.org, &lt;geeks(a)sunhelp.org&gt; Subject: MCA Fast Ethernet Cards Reply-To: cctech(a)classiccmp.org Would the people who wanted the PS/2 100Mbps ethernet cards send me an email? I have access to them now and can ship soon. Peace... Sridhar --__--__-- Message: 38 Date: Sat, 18 Jan 2003 12:32:12 -0800 (PDT) From: Brian Chase &lt;vaxzilla(a)jarai.org&gt; To: Classic Computer Talk &lt;cctalk(a)classiccmp.org&gt; Subject: Re: SGI Discussions? Reply-To: cctech(a)classiccmp.org On 18 Jan 2003, David Holland wrote: Pfft! You call that large!? There are plenty of folks on this list who'd mock the relatively dainty size of the SGI Power Series frames. There are people on the list with IBM mainframes, PDP-10s, big VAXen, and a few Crays. logic, they're I'll see if we have any spare older mice. I know at least with the Indy and Indigo2s onward they all used regular PS/2 mice. I'm not sure about the Onyx systems, or the gear predating the mid-1990s time frame. My introduction to SGI equipment came around 1994 or so. About a year ago my employer returned several pallets worth of Indigo2s and Indys (~80-100 systems) to SGI for trade ins on Octane2s. It took about 6 months for SGI to even bother to come and pick them up. I've a feeling they all ended up being dumpstered once they got back to SGI. Saving them was out of the question as a list of serial numbers had been given to SGI; because they were trade ins, they actually had to be traded in. It's too bad. On another note, perhaps more related to the list, the new building that the Computer History Museum is moving into is actually the old SGI headquarters on Shoreline Dr. in Mountain View. It's a lovely building; I can't wait until they get things prettied up and moved into the new location. -brian. --__--__-- Message: 39 From: "Antonio Carlini" &lt;arcarlini(a)iee.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: VXT X terminal question Date: Sat, 18 Jan 2003 20:51:41 -0000 Organization: me@home Reply-To: cctech(a)classiccmp.org I have a UV3100-90 and I've been close to a VAX 4000-100 (it just wasn't mine). The VAX 4000-100 enclosure has a distinctive sloping part at the back which houses the Qbus (and DSSI?) connectors. I didn't get to look closely enough to see whether this housing is an add-on to the UV3100-90 enclosure or the whole case is a manufacturing modification of that enclosure. Either way, the standard shipping UV3100-90 enclosure does not have anywhere for Qbus and DSSI connectors. I'll look for pinouts if I can dig up the right docs. Antonio -- --------------- Antonio Carlini arcarlini(a)iee.org --__--__-- Message: 40 Date: Sat, 18 Jan 2003 16:04:54 -0500 (EST) From: "r. 'bear' stricklin" &lt;red(a)bears.org&gt; To: cctalk(a)classiccmp.org Subject: RE: Musings on BabyVAX video Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, Doc Shipley wrote: I just hauled home an m38 that had... an SPX installed. Right after I bought an SPX card for my m76, to replace the GPX in it. The two SPX cards are identical in every way (except possibly dustiness). ok r. --__--__-- Message: 41 Date: Sat, 18 Jan 2003 16:08:55 -0500 (EST) From: "r. 'bear' stricklin" &lt;red(a)bears.org&gt; To: Classic Computer Talk &lt;cctalk(a)classiccmp.org&gt; Subject: Re: SGI Discussions? was Re: Mac SE/30 accessories availability? Reply-To: cctech(a)classiccmp.org On Sat, 18 Jan 2003, David Holland wrote: Uh.. Or you could go spend $1 on some felt and glue at the craft store, and fix it. ok r. --__--__-- Message: 42 Subject: RE: VXT X terminal question Date: Sat, 18 Jan 2003 22:14:35 +0100 From: "Fred N. van Kempen" &lt;Fred.van.Kempen(a)microwalt.nl&gt; To: &lt;cctalk(a)classiccmp.org&gt; Reply-To: cctech(a)classiccmp.org All, Although I have both the M38 and M76 set up, I cant get the video part to work - tube (that is on a VXT2000 right now) doesn't seem to sync on either model. The M38 is standard, the M76 is the SPX model. Anyone have a clue? --fred --__--__-- Message: 43 Subject: Apple 1 schematics Date: Sat, 18 Jan 2003 16:22:30 -0500 From: chris &lt;cb(a)mythtech.net&gt; To: "Classic Computer" &lt;cctalk(a)classiccmp.org&gt; Reply-To: cctech(a)classiccmp.org In reading my copy of Collectible Microcomputers (yes yes, you all get it by now, I like the book... ok, I'll stop refering to it after this)... I noticed in the Apple Computer section a mention of how Apple's first customers were the folks that got schematics for the Apple 1 when it was first shown at Home Brew. Although I already knew that they alledgedly gave out schematics... I began to wonder A: did they really (probably) and B: do any copies exist anywhere? I thought it might be a fun project to try an build an Apple 1 from the schematics... just as the first users probably did. So, does anyone know if they are available, or does anyone have a copy and might want to send me a set? Or are copies just as elusive as the Apple 1 itself and there is no shot in ever getting them. -chris <http://www.mythtech.net> --__--__-- Message: 44 Subject: RE: VXT X terminal question Date: Sat, 18 Jan 2003 22:23:32 +0100 From: "Fred N. van Kempen" &lt;Fred.van.Kempen(a)microwalt.nl&gt; To: &lt;cctalk(a)classiccmp.org&gt; Reply-To: cctech(a)classiccmp.org Jochen writes: Heh. This is not too hard, but *only* if he used the machine with a KFQSA (DSSI-to-MSCP) controller, rather than the onboard SHAC. It'd be a start, though. Michael, was this you? --fred --__--__-- Message: 45 Date: Sat, 18 Jan 03 13:44:31 PST From: msokolov(a)ivan.Harhan.ORG (Michael Sokolov) To: cctalk(a)classiccmp.org Subject: RE: VXT X terminal question Reply-To: cctech(a)classiccmp.org Fred N. van Kempen &lt;Fred.van.Kempen(a)microwalt.nl&gt; wrote: Not me. My 4.3BSD suffix is Quasijarus, not Tahoe or Reno. But my opinion on SHAC is radically different from yours. SHAC is a darling beauty. It is a problem only for cheap OSes like NutBSD and Linsux. Since SHAC is a true CI host adapter with the true Generic VAX Port (GVP) it is perfectly supported by the SCA CI port driver present in every proper VAX OS with SCA such as Ultrix. Although DEC killed VAX Ultrix before MicroVAXen with SHAC came about, source examination shows that the Ultrix V4.20 CI port driver supports SHAC (on XMI). Some day I will lift the SCA code wholesale from Ultrix and plop it into 4.3BSD-Quasijarus. MS --__--__-- Message: 46 Date: Sat, 18 Jan 2003 14:13:56 -0800 (PST) Subject: Re: Apple 1 schematics From: "Eric Smith" &lt;eric(a)brouhaha.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Reply-To: cctech(a)classiccmp.org chris asks about Apple I schematics. exist A: Yes. B: Google is your friend. It's *extremely* difficult to find some of the Apple I parts, which have been out of production for over years. Particularly the seven 1024-bit MOS shift registers, and one hex-40-bit MOS shift register. Not quite, since they had a PCB. (Unless you plan to lay out a PCB yourself.) --__--__-- Message: 47 Date: Sat, 18 Jan 2003 22:16:19 +0000 From: John Honniball &lt;coredump(a)gifford.co.uk&gt; Organization: Stoke Gifford Computer Museum To: cctalk(a)classiccmp.org Subject: Re: Got the second batch of -11 equipment Reply-To: cctech(a)classiccmp.org Bill Bradford wrote: covers If the RL02s are like the RL01, there's a little metal panel on the side, near the "switch". Unscrew that, and you should see the solenoid interlock mechanism. Fiddle with that, and the "switch" should open the top cover. You'll need to lock the heads down if you're going to ship the drives. There's a little metal flap below the head carriage, visible with the top cover open and no pack in the drive. A single screw holds it in the "open" position. Loosen the screw, turn the flap 90 degrees, then tighten the screw. The flap is now in front of the head carriage, preventing it from moving. I know someone here in Bristol who'd take the RL02s, if they weren't so far away. -- John Honniball coredump(a)gifford.co.uk --__--__-- Message: 48 Date: Sat, 18 Jan 2003 22:19:34 +0000 From: John Honniball &lt;coredump(a)gifford.co.uk&gt; Organization: Stoke Gifford Computer Museum To: cctalk(a)classiccmp.org Subject: Re: Apple 1 schematics Reply-To: cctech(a)classiccmp.org chris wrote: exist Parts of the Apple I schematics are shown in the second edition of "Fire In The Valley". Not enought to build a complete replica, though. You can see, however, that there's an option for installing either a 6502 CPU or a 6800. -- John Honniball coredump(a)gifford.co.uk End of cctech Digest --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.443 / Virus Database: 248 - Release Date: 1/10/2003 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.443 / Virus Database: 248 - Release Date: 1/10/2003