test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jeff.kaneko＠juno.com

Guys: I need someone to ID these WD devices for me. They don't appear in any of the docs that I have. WD10C20A WD2010B - This is the HDC chip, similar to the 1010. Does anyone have the actual datasheet for the 2010? WD1015 WD11C00 WD16C92 These chips have all appeared on AT controllers at one time or another. I'm trying to find out if they can be used for something a little more useful :^} ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

26 years, 7 months

HP 150 Touchscreen

by ethan_dicks＠yahoo.com

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: ...long after I wrote... > > Hey. I've got one of those, just the IR hardware... > > Assuming it _is_ from an HP150 machine... Indeed. > The original version (fits a 9" CRT) used a 10-pin 2 row connector : > > 1 o o 6 > 2 o o 7 > 3 o o 8 > 4 o o 9 > 5 o o 10 That's the connector, but I think it fits a larger monitor than 9", unless there's lots of space around it for the IR hardware. Many thanks, -ethan _________________________________________________________ Do You Yahoo!? Free instant messaging and more at http://messenger.yahoo.com

26 years, 7 months

Looking for Ron Ward

by ss＠allegro.com

Hi, Please pardon the bandwidth...I'm looking for a valid email address for "Ron Ward", possibly something @jps.net. I received email from him, and he sounded like someone who should be on ClassicCmp... but his "from" address (n6idlron(a)jps.net) is bad ("unknown user"), and support at jps.net says "no one in our database with such a name". thanks, Stan Sieler sieler(a)allegro.com

26 years, 7 months

Power PC????

by rigdonj＠intellistar.net

Is anyone out there familar with the Motorola Power PCs? I spotted several today. A StarMax 4000/180, several that booted a said Power PC 604 and a Data Server 4000. Can anyone tell me more about these and what kind OS they run? Joe

26 years, 7 months

Places in LA?

by dlw＠trailingedge.com

I'm going to be in LA Wed 5/12 til Sun 5/16 for E3. Don't know if I'll have time or much in the way of transportation, but is there any interesting places to look for classic computer stuff while I'm there? Silly me, of course there are, question is will any of you tell me where your secret fishing holes are? :-) ----- David Williams - Computer Packrat dlw(a)trailingedge.com http://www.trailingedge.com

26 years, 7 months

Pictures from the final Paxton auction...

by jimw＠agora.rdrop.com

For those who are still curious, but not inclined to cut and paste the collections of URLs I offered previously... The images from the final Paxton auction have (finally) coalesced into a web page, accessible from the 'recent events and appearances' selection on the Computer Garage home page: http://www.computergarage.org -jim --- jimw(a)computergarage.org The Computer Garage - http://www.computergarage.org Computer Garage Fax - (503) 646-0174 >>> Coming soon to www.computergarage.org - the CBBS/NW on-line archives >>> Coming to VCF III (2-3 October 1999) - CBBS/NW live!

26 years, 7 months

Commodore cassette format

by rcini＠email.msn.com

Here's a transcript of a converstation I had with Jim Butterfield about the Commodore cassette format: ==================== #: 42513 S2/Programming (CIS:CBMAPP) 31-Jul-97 17:49:07 Sb: CBM programming info Fm: Jim Butterfield 73624,14 To: Richard Cini/WUGNET 70153,3367 Replies: 0 TID: 8132 Par: 42485 Chd: 0 Sib: 0 > I seem to be missing some info on the following: info on the structure of > the tape header, and the equates for the "I/O Error#" messages (i.e., the > descriptions behind the error numbers). Can anyone point me in the right > direction on this? Hoo-eee! You picked a dilly of a complex format to look at (and some heavy code to read .. I swear that I could rewrite it into about half the ROM!). Probably the best place to start is on page 97 of the Inner Space Anthology. where there's some basic data by some guy called Butterfield: Leader = 50 cycles of Shorts Short = 182 microseconds half cycle or 2.75 Khz Long = 262 microseconds half cycle or 1.91 KHz Mark = 342 microseconds half cycle or 1.48 KHz BYTE MARKER = Mark Mark Long Long (What goes mark mark? A dog with a harelip. Oops, sorry, continuing..) 1-bit: Long Long Short Short 0-bit: Short Short Long Long Data Byte = Byte marker, 8 1/0 bits, 1 1/0 odd-parity bit' about 9.02 milliseconds total. Leader detail (I'm faking this one from memory); after the leader, there's a countdown byte series from about 0F hex to 00 hex; on the "second" block, the countdown is repeated with the high bit set, thus, 8F down to 80 hex. Tape File Format: Leader - header block - data block - possible end block. (All blocks written twice). Hope this gets you started. --Jim ================== #: 42554 S2/Programming (CIS:CBMAPP) 01-Aug-97 14:41:14 Sb: CBM programming info Fm: Jim Butterfield 73624,14 To: Richard Cini/WUGNET 70153,3367 Replies: 0 TID: 8132 Par: 42522 Chd: 0 Sib: 0 > I guess that the "countdown blocks" really are some sort of synchronization > before the header block? Yes. As I recall the code (it's been a while!), the reading program looks for this stream; when it finds an identifiable countdown byte, it just counts off the remaining characters until it gets to the data. It always seemed a bit like overkill to me. And when you get into the code itself, you'll find some quite obscure stuff in there trying to synchronize with the tape speed (a sort of self-correcting timing). Tough reading. > I'd like to get my hands on the "Inner Space Anthology" book. Can you help > there?? Karl Hildon, the compiler of the anthology, recently reprinted a quantity, with some C128 data added (the original anthology was published before the 128 arrived). I see his email address has been posted. Since Karl republished using a copying machine (including a colour copies for the cover), I believe he's asking about $20 for a copy. But check it out directly with him. If for any reason you can't find him, come back to me. --Jim ================== #: 42698 S2/Programming (CIS:CBMAPP) 08-Aug-97 12:07:27 Sb: CBM programming info Fm: Jim Butterfield 73624,14 To: Richard Cini/WUGNET 70153,3367 Replies: 0 TID: 8132 Par: 42665 Chd: 0 Sib: 0 > Am I doing the math wrong?? You have me at a couple of disadvantage. It's been something like 18 years since I picked apart the tape code, os it's nor fresh in my mind. To add to my difficulties, I have a vision problem at the moment which hopefully will be corrected by surgery in the fall ... but it makes it hard for me to do detailed picking through listings. Before I start sounding like I'm copping out, I will have some comments for you that may explain at least part of the discrepancy. But first, a couple more vague excuses: darned if I can remember where those timing numbers came from after all this time; seems likely that I filched them from a Commdore design spec, or someone measured them with a time base calibrated scope. I tend to doubt that I sweated through counting microseconds. And in this response, I should mention that my original investigations were on the PET 2001, my snoop today was on the C128 (built-in monitor makes exploring easier). And a caution to anyone with a Plus-4 or C-16 .. the code (and tape format) is not the same for those two machines. Here's the deal, I think: All this stuff is running off an IRQ. The "last" think the tape routine does is to set the timer ("last" is in quotes because there may be other IRQ jobs done after the tape work). BUT: after the timer is set, and the interrupt finally hits to signal that the time has elapsed, it will be quite a few microseconds before the tape routines will get to the point where they will set the timer again. First, the IRQ goes though the ROM routine which stashes the registers. Then, it does an indirect jump to the tape-write code; but it has to do quite a bit of investigation before it gets around to setting up the timer again. Even the timer routines you quote are within a subroutine, and of course it takes time to make the call, set up the numbers, etc. I might guess that the overhead taken to get to the "bit write" timer set could be in the region of 86 machine cycles. Thus, a timer value of $B0 or decimal 176 would actually generate a time of 176+86 machine cycles, or 262 cycles; a value of $60 or decimal 96 would produce 96+86 or 182 cycles. (Works out so exactly that, gosh, maybe long ago I did painstakingly count all the machine cycles .. if so, I've blissfully forgotten doing so). In looking at the code, you'll note that the byte marker is detected earlier in the interrupt sequence; I'll guess a delay or 70 (rather than 86) to get to that timer sequence. This would generate $110 or 272 o the timer producing an overall time of 272+70 or 342 machine cycles. Now, about the clock actually running at 1.1082 MHz. The original PET didn't have an interface to NTSC video, and the clock ran at precisely 1 MHz. So the calculation were correct during the ancient PET/CBM days; but it appears Commodore didn't see any need to trimthe figures by 10% when they changed the clock to match video frequencies. Never thought of that; but I expect that it's true that machines from the VIC-20 onward wrote tape about 9% faster than the earlier machines. I wonder if they made any adjustment for European machines, which likely had another clock frequency so as to be PAL compatible. Does the above sound like a plausible theory? --Jim p.s. The tape WRITE part is easy ... when you get to that read stuff, with multiple timers going, it's gonna be real fun. ================= [ Rich Cini/WUGNET [ ClubWin!/CW7 [ MCP Windows 95/Windows Networking [ Collector of "classic" computers [ http://highgate.comm.sfu.ca/~rcini/classiccmp/ [ http://highgate.comm.sfu.ca/~rcini/pdp11/ <---------------------------- reply separator

26 years, 7 months

Commodore cassette format

by ds_spenc＠alcor.concordia.ca

Hi, I need some information about the Commodore cassette storage format. I want to salvage something from a damaged cassette, and I have a (rather crummy) audio digitizer. I've spent a couple of hours staring at the signals >from stored programs but I just don't 'get it'. In the data portions, it appears as if every 20th wave is special, with maximum amplitude and a smaller frequency. If these are synchronization points, why does it appear to be at every 20th wave? Why not every 9th? Does the format not care about bytes? Or is there some kind of error detection or correction scheme taking up more bits? There are about 200 of these 'synchronization waves' just in the header. The machine-readable file I was looking at only has a three-character filename. What data is normally stored in the header? Filename, load address, checksum or CRC, etc? It sounds like there are two identical copies of the header information. I know that there are two copies of the actual file data. How is the data actually stored? I expected to see square waves with frequency modulation. IIRC, that's what the Apple does. The PET appears to use sine waves (non-flattened) and I can't visually discern any frequency differences in the data (at a sample rate of approx. 25,500 per second). A lot of the data portion of the file I'm looking at looks like it is stored with amplitude modulation, but I don't think that would make sense with such a flaky thing as cassette tape. There are large amplitude "gulleys" here and there in the file, yet the file I'm looking at loads properly. (Of course, it sure SOUNDS like it's using frequency modulation. Perhaps I should sample at a higher rate, and get out a ruler to measure the width of the waves...) Those 20 waves don't represent a single bit, do they? (Lessee... approx. 60 waves per 600 samples, 25,500 samples per second... that's 2,550 Hz, and 20 waves/bit = 127.5 bps, which isn't enough but is getting somewhat closer to the numbers I'd expect. Maybe I'll answer some of my own questions with another look at the samples.) The damaged file that I want to salvage has had its header wiped out (someone momentarily hit "RECORD"), but the data appears to be untouched. Is there a way of getting the PET (or any other machine) to read the data without the file header? -- Doug Spence ds_spenc(a)alcor.concordia.ca http://alcor.concordia.ca/~ds_spenc/

26 years, 7 months

Board Cleaning Opinions Wanted

by jeff.kaneko＠juno.com

Guys: If you had a pile of impossibly dirty DEC Q-Bus boards, what would you do? (This includes the usual disk controller card, CPU/IO/Memory extender, a couple of corestacks, the backplane, and the regulator card). Jeff ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com/getjuno.html or call Juno at (800) 654-JUNO [654-5866]

26 years, 7 months

Kaypro 2x available

by jimw＠agora.rdrop.com

Another item seeking a home... Replies to original poster please... -jim ----------- >Date: Sun, 09 May 1999 09:36:04 -0500 >From: FRedFritz <frederick.fritz(a)mankato.msus.edu> >Reply-To: ffritz(a)mail.mankato.msus.edu >X-Sender: "FRedFritz" <ffritz(a)mail.mankato.msus.edu> (Unverified) >X-Mailer: Mozilla 4.06 [en]C-gatewaynet (Win98; I) >To: jimw(a)agora.rdrop.com >Subject: Kapro 2x available > >Dear Jim, > >I have a working Kapro 2x which I have just retired. I purchased it new >in 1985. It is in mint condition and I have all the software and >manuals that came with it. I would be delighted to find a "good home" >for it with someone who would appreciate it. Fred Fritz > >ffritz(a)mail.mankato.msus.edu --- jimw(a)computergarage.org The Computer Garage - http://www.computergarage.org Computer Garage Fax - (503) 646-0174

26 years, 7 months

old PDPs in Australia

by jimw＠agora.rdrop.com

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26 years, 7 months

GTS-100 Power Supply Info Needed

by dlw＠trailingedge.com

I have a Future Systems Inc. Model GTS-100 floppy drive for the Atari ST series computers but I don't have the manuals, cables or power supply. Does any one know specs on the power supply for this drive so I can locate a replacement. I think I once heard that it could use the same power supply as the Atari 5200 game system but don't know for sure. Also, if anyone has a source for cables or the strange 14 pin ST connector so I could make some cables, please let me know. Thanks. ----- David Williams - Computer Packrat dlw(a)trailingedge.com http://www.trailingedge.com

26 years, 7 months

Board Cleaning Opinions Wanted

by danburrows＠mindspring.com

Other than the core stack the first thing I do is the 120 lb air hose. It cleans a lot of sins. At least lets you see what kind of mess you have. (what was used for glue) Then Isopropyl, methanol, or some window cleaner and a paint brush or soft well worn tooth brush and blasting it frequently with air. Use an old towel to wipe the paint brush on to clean it between strokes. Be sure to wear safety glasses. Alcohol in the eyes is no fun. Dan -----Original Message----- From: jeff.kaneko(a)juno.com <jeff.kaneko(a)juno.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Monday, May 10, 1999 10:30 PM Subject: Board Cleaning Opinions Wanted >Guys: > >If you had a pile of impossibly dirty DEC Q-Bus boards, >what would you do? (This includes the usual disk controller card, >CPU/IO/Memory extender, a couple of corestacks, the backplane, >and the regulator card). > >Jeff > >___________________________________________________________________ >You don't need to buy Internet access to use free Internet e-mail. >Get completely free e-mail from Juno at http://www.juno.com/getjuno.html >or call Juno at (800) 654-JUNO [654-5866] >

26 years, 7 months

Board Cleaning Opinions Wanted

by CLASSICCMP＠trailing-edge.com

>If you had a pile of impossibly dirty DEC Q-Bus boards, >what would you do? (This includes the usual disk controller card, >CPU/IO/Memory extender, a couple of corestacks, the backplane, >and the regulator card). For everything except the core stack, I wouldn't hesitate to run them through the dishwasher and gently dry. The core stack should be treated substantially more delicately. If you want to see "impossibly dirty", you ought to see some 11/23's that I was maintaining at a solar cell plant. Absolutely incredibly quantities of incredibly fine aluminum dust over everything - in some cases built up over a quarter inch thick - yet they kept on (for the most part) working. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

26 years, 7 months

Two quick questions, TK70 & DSSI

by cmcmanis＠freegate.com

1) Can a TK70 drive read/write TK50 tapes? I'm looking for media for the TK70 to test it and all I've found so far are TK50 tapes (or are they the same tape?) 2) What termination requirements are there on DSSI disks? I powered up the two RF71's and the KQSFA DSSI controller in the BA213, they spun up and the ready lights were on but when UNIX probed the controller it saw only one drive and when I tried to read that drive its FAULT light started flashing. The cabinet is set up to connect the card to a ribbon cable that connects both drives and then ends at a funky high density connector (looks a lot like SCSI-2). Thanks, --Chuck McManis

26 years, 7 months

manuals available

by edick＠idcomm.com

That's right. In fact, I have the '81 data book on the floor right here. The ICM7228 is apparently an 8-digit LED display multiplexer which was not available in '81. I was hoping it was a different part, more like the CMOS 4534, which is a counter-display-driver. In any case, the information I got >from the Harris site and the Maxim site, per a referral from someone in this group, seems to correlate with my recollection, such as it is, of what these devices are. The 7226 is a 10 MHz frequency counter circuit with LED drivers built in. I once hooked up the part in a 9-digit application using a fast CMOS BCD counter as a prescaler rather than the ECL jewel they designed in their app-note. That makes it almost useful, as it then counts up to 100 MHz in several modes. Of course, you have to prescale both the inputs in order to make it work right, but it's a handy little tool if you package it right. That outrageously large board of Intersil's was pretty impractical except for the purpose for which it was intended, which was to demostrate how their porduct works. They didn't make it easy to up the count rate by a decade, nor did they make signal routing in and out very handy. The switches they used forced one to mount the board in a large box even though only a small area was needed for the display and switches. Their eval kit for the 7106 DPM was about as impractical. It got us to buy them, though, didn't it? Dick -----Original Message----- From: Joe <rigdonj(a)intellistar.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Monday, May 10, 1999 3:02 PM Subject: Re: manuals available >Richard, > > I have a couple of old Intersil Evaluation kits and the manuals list all >of the devices available in 1981 but don't list a 7228. Are you sure it's >not a 7226? or else it's newer than 1981. > > Joe > >At 03:46 PM 5/8/99 -0600, you wrote: >>I've run into Intersil's ICM7228 once again and find my data book doesn't >>cover that number. It's date coded '87, so It's probably in the last book I >>got from Intersil before they were acquired by GE. >> >>Has anyone got a complete sheet on this part? I believe it is a >>multi-decade counter/display driver, or maybe just a display driver. >> >>thanx >> >>Dick >> >> >

26 years, 7 months

HP 150 Touchscreen

by rigdonj＠intellistar.net

At 02:08 PM 5/10/99 -0700, you wrote: > > >--- Joe <rigdonj(a)intellistar.net> wrote: > >First, I wrote: >> >Hey. I've got one of those, just the IR hardware, not the CPU or monitor. >> >I picked it up at the Dayton Hamfest a couple of years ago because it looked >> >neat. > >> Sounds like you got one touch screen parts for the later TouchScreen II >> computer. It was an option on that computer and some terminals. It was >> built into the HP 150. > >Ah. Got it. > >> I THINK that all you have is a bezel with two rows of LED IR emitters >> and two rows of photo receptors. > >That's the one! > >> All you had to do to install it on the TS II was to pop out the old >> bezel, plug in the cable and snap this bezel in place. > >Are there any specs out there for the TS II that might be useful in attempting >to interface one to a different kind of computer? No, I don't think so. I think I have a service manual for the TS II but I don't think it gives any details about the touch screen. I expect that you would have to at least write a device driver before you could add it to another computer. Joe > >Thanks, > >-ethan > >_________________________________________________________ >Do You Yahoo!? >Get your free @yahoo.com address at http://mail.yahoo.com > >

26 years, 7 months

replacement transformer wanted for IMSAI power supply

by edick＠idcomm.com

What are the physical dimensions of this transformer, Eric? I've been rooting around in that portion of the basement which has such things. Perhaps I have a potential drop-in replacement. I know I still have a couple of the transformmers from the ALTAIR, though I don't know which one. You may recall I bought a load of a couple of hundred back in the late '70's. I've got a number of different transformers that might serve. Dick -----Original Message----- From: Eric Smith <eric(a)brouhaha.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Monday, May 10, 1999 2:14 AM Subject: Re: replacement transformer wanted for IMSAI power supply >Dave Dameron <ddameron(a)earthlink.net> replied about my IMSAI PSU woes: >> If the voltages checked out without a load, look for a very >> good short somewhere. > >The incoming AC was measured at 120.0 VAC. The primary has taps for >nominal, -10%, and +10% input. When I received it, it was apparently set >for -10%. I say apparently because the transformer doesn't match the one >in the IMSAI manual. The no-load DC voltages are expected to run high, but >these were even higher: 25V vs. 18V, 11V vs. 8V. I switched it to the +10% >tap, and now under some load (CPU, one memory card, front panel) the DC >voltages are very close to the nominal values. So I suppose this could be >indicative of shorted turns in the primary. > >> The 5 Amp line fuse didn't blow? > >Nope. But the transformer emitted a foul stench after a few minutes. It >wasn't hot enough to be painful to touch, but it was close.

26 years, 7 months

manuals available

by edick＠idcomm.com

I've run into Intersil's ICM7228 once again and find my data book doesn't cover that number. It's date coded '87, so It's probably in the last book I got from Intersil before they were acquired by GE. Has anyone got a complete sheet on this part? I believe it is a multi-decade counter/display driver, or maybe just a display driver. thanx Dick

26 years, 7 months

HP 150 Touchscreen

by ethan_dicks＠yahoo.com

--- ss(a)allegro.com wrote: > > Re: > > > I've been playing with a HP 150 recently. Do any of you physicists out > > there know how the touch screen works? > > Infrared beams...at least for the HP 150 A and B. > > The first two models had visible holes where dust could get in and obscure > the IR LEDs. Later, HP added an IR-transparent bezel over them to avoid > that problem. Hey. I've got one of those, just the IR hardware, not the CPU or monitor. I picked it up at the Dayton Hamfest a couple of years ago because it looked neat. Is there enough information out there to attempt to interface one of these units to another kind of computer? There is a ribbon cable with fifteen to twenty wires coming off of one side. -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

26 years, 7 months

HP 150 Touchscreen

by ethan_dicks＠yahoo.com

--- Joe <rigdonj(a)intellistar.net> wrote: First, I wrote: > >Hey. I've got one of those, just the IR hardware, not the CPU or monitor. > >I picked it up at the Dayton Hamfest a couple of years ago because it looked > >neat. > Sounds like you got one touch screen parts for the later TouchScreen II > computer. It was an option on that computer and some terminals. It was > built into the HP 150. Ah. Got it. > I THINK that all you have is a bezel with two rows of LED IR emitters > and two rows of photo receptors. That's the one! > All you had to do to install it on the TS II was to pop out the old > bezel, plug in the cable and snap this bezel in place. Are there any specs out there for the TS II that might be useful in attempting to interface one to a different kind of computer? Thanks, -ethan _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

26 years, 7 months

Interesting Ohio Scientific Information

by bill＠chipware.com

Thought those on the list that are interested in OSI might want to see this. From an OSI engineer who still wishes to remain anonymous: > Hi Bill, > I haven't forgot you, just got around to pulling box > out of storage. > The plastic cases are C1P Series 2. I ran across a > usage report dated 11/24/1980 that indicates we had > plastic shells in stock then. Those plus what we had > on order at that date was for about 1000 units. Average > weekly usage on the report was 28.5 units. I don't have > any more specific figures than that. I know we shipped > C1P Series 2 units, but I have no idea of the total. ... > If you're not aware of it, the C1P plastic cases were > simply top and bottom shells that attached to a C4P metal > case. The C4P case used the same metal, but had the walnut > sides. There were metal case C1Ps before that. From the > literature I have, it appears the metal case C1P shipped > <until> about August of 1978. An October 1, 1979 sales > information release still showed the metal cased C1P. ... > The same 11/24/1980 usage report shows 4 560ZB PC boards > in stock with none on order and average weekly usage zero. > My guess is that these are the remainder of a run of 5 or 10. > They are very rare. I believe I saw a board once. I never saw > one operating. I did not design it. The 560Z was a redesign > of the earlier 460Z that I don't think I ever saw. The 560Z > board ran the Z80 and Intersil 6100 micros. I have a 560Z > schematic dated August 1977 with status indicated as > "Production". The 460Z is in a March 1976 price list and > appears to only have supported the Intersil 6100. Both boards > require a OSI 6502 based CPU board as a host. I started at OSI > November 1977. The 560Z board appears to be the last board > designed before I became Chief Engineer. I ran across some > technical information that because of PDP8 unique IO micro > code, that you could not simply run PDP8 code on it.

26 years, 7 months

B020 Transputer Graphics Board info

by Rmeenaks＠aol.com

Hey, The B020 that I have has two connectors on it. One, I am assuming is the 15-pin VGA connector. There is also another connector which looks like a 9-pin EGA connector. Is this correct? How do you connect the B020 to the B008 to make one network instead of two. I will be getting all the support software for the B020 soon. I know Tony has one, so I will be sending him a copy. Does anyone else want one? Also, apparently to use trams greater than size 1, I need jumper pins on the unused tram slots. Where can I get these?? Does anyone have several spares that they are not using???? Thanks. Ram

26 years, 7 months

HP 150 Touchscreen

by jolminkh＠nsw.bigpond.net.au

I've been playing with a HP 150 recently. Do any of you physicists out there know how the touch screen works? The electronics for it surround the screen but don't seem to contact it. Some sort of static electricity capacitive effect on one's finger? I'm also having a lot of trouble making images of the disks that came with it. Teledisk doesn't seem to be able to handle the format. Any clues? Hans Olminkhof

26 years, 7 months

HP keyboards

by rigdonj＠intellistar.net

One of the other list members asked me which HP keyboards he should pick up while surplus scrounging. That has started me on a long delayed project to make a list of HP keyboards and the system that they go to. I've started a list and posted it at "http://www.intellistar.net/~rigdonj/keyboard.txt". If anyone has any additional part numbers or comments please send them to me and I'll post them. Joe

26 years, 7 months

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test-drb