test-drb March 2003

test-drb@ccmp.vtda.org

314 participants
633 discussions

by teoz＠neo.rr.com

Anybody happen to have disk images of GS/OS before 6.0? I wanted something to tinker around with on my IIgs with 1mb ram expansion. I have no software for it at the moment.

21 years, 4 months

Did anyone on this list get this IBM system ?

by jrkeys＠concentric.net

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3405290468

21 years, 4 months

ICL OPD/Merlin Tonto

by adrian.vickers＠blue-edged.com

On 10 March 2003 10:20 am, Witchy wrote: > The only way of doing data transfer > from machine to > machine is serially, and remember the serial port on the OPD is for a > printer only so is uni-directional. Actually, I may be able to transfer via floppy disk, as I have an OPD disk interface (How cool is that? I even have the manuals!) - it plugs into the ROM pack. The one unknown at this time is what format the floppy is written in; but since it at least takes the same drives as the QL, it should be possible to read one way or another. Unlike Commodore's damn GCR format. Cheers, Ade.

21 years, 4 months

Manual "Practical Microprocessors" wanted

by glenslick＠hotmail.com

I have an HP 5036A (actually two now) and was able to pick up one copy of the manual for $15 plus shipping on eBay last December. I haven't noticed any other copies go by on eBay since then, but I haven't looked too often. The 5036A kits show up frequently in the $20+ range, but almost always without the manaul. Since I only have the one copy I don't want to part with it now, but I could probably at least type in the ROM listing from the manual sometime if you don't have a copy of that. A quick Google search didn't turn up a copy of the ROM listing online anywhere. -Glen >I'm looking for a manual that goes with a HP 5036A Microprocessor Lab (8085 >trainer in a briefcase). The manual is "Practical Microprocessors" and was >published by HP some years ago. I am not looking for a museum piece, just a >manual to use with the Lab. > >I am also interested in accessories and information about the 5036A. > >If anyone has such a manual to sell or trade, please contact me off list. > >Thanks, >Stuart Johnson _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

21 years, 4 months

DUP Problem with RT-11

by mbg＠TheWorld.com

>I have been attempting for some to to write ALL 65536 blocks >from one RT-11 partition to a second RT-11 partition. Does >anyone know of what is wrong with what I am doing? I am >using V5.03 of RT-11 under the Supnik emulator and I do the >command: As you know, some devices supported by RT are variable-sized, like DL, DM and DU. In order for RT to know the size of a volume on these devices, the handlers have to support the special function 373, which gets the volume size. In most cases, this is not a problem since the volume sizes don't approach the 16-bit limit of 65535. But for DU volumes, this size can be exceeded. And since you cannot return a volume size of 65536 as it would require 17 bits, the maximum size returned is pegged at 65535, with one block specifically designated as unused (but reachable using other special function calls in the DU handler). The reason for the one unused block is so that the calculations for start of a partition are simple (since it is a truncation by discarding the low-order 16 bits of block number). Now, since the DU handler reports 65535 as the largest size, the directory structure is established such that the blocks which are accessible are 0 through 65534 (a total of 65535 blocks). It would be a kludge and a hack (a bad one) to play games in the driver to make it report 0 and have it mean 65536 even if a reported size of zero makes no sense (actually, a reported size of less than 9 makes no sense since that is the MINIMUM number of blocks required on an RT volume to be able to store a minimum of one block of data). It would also mean changing DUP and any other program which uses VARSZ$. Personally, I would suggest that time is better spent with other things in RT... just live with one block not directly accessible per 65536, or write your own programs (without mucking with the OS itself) to get at the final block... I would say it is a case of truly diminished returns. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com | | | | | "this space | (s/ at /@/) | | unavoidably left blank" | URL: http://world.std.com/~mbg/ | | | "pdp-11 programmer - some assembler | | (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

21 years, 4 months

Synertek 6507

by dwightk.elvey＠amd.com

>From: "Jim Kearney" <jim(a)jkearney.com> > >>From: "Dwight K. Elvey" <dwightk.elvey(a)amd.com> >> I'm looking for a data sheet for the Synertek 6507. >> This is not the same as the reduced pin 6502's of the >> same number by other manufactures. This is a video control >> chip. If anyone has an old Synertek book with the >> programming information for one of these I'd like >> to get a photo copy?? > >According to my 1983 Synertek book, the SY6507 _is_ a 28-pin 65xx CPU with >8K addressing. The only video controllers they list are the SY6545, SY6845, >SY66450 and SY66550. > Hi Jim This is what Eric Smith tells me as well. As I told him, it doesn't make much sense. The board has a 6502 as well as the 6507 with the data lines tied together. I guess they could use opposite phases or something. I was tracing down the sync signals for the video and they seem to be coming from this part?? I do have a schematic someplace but I haven't located it yet. Now I have a mystery to solve? Dwight

21 years, 4 months

Collecting silicon wafers

by davol＠globalnet.co.uk

> On Wed, 12 Mar 2003, Sridhar wrote: > > An extremely new wafer can be valuable just by the ability to reverse > newfangled engineering. > > Peace... Sridhar Can't see this myself. Yes. I know it's theoretically possible (just) Modern chips are to all intents and purposes three dimensional objects. The real logic lies, out of sight below several layers of metal conductor. It's just this, incidentally, that makes them of limited interest to a collector. (There's not much to see on the surface anymore) So OK, you could probe them with X-rays or something like that or try etching away the layers with acids. My own view is that this is just about as impossible a task as one can possibly imagine. After you've done all of this you'd have to reverse your way back to the masks (which, these days, are quite distinct from the geometries they produce on silicon. AND THEN you have to have a fabrication available to you that is capable of putting the whole thing back together again. Much easier just to steal the design database. The forward engineering is quite difficult enough. It's my own belief that reverse engineering is - practically speaking - intractable. If this really is so appealing to sinister governments etc. why not just reverse engineer the chip they bought legitimately, by mail order. > On Tue, 11 Mar 2003, Chandra Bajpai wrote: > > > Before anyone goes in trying to cash in their wafers...I assume any > > wafer that was not kept in a clean room environment is worthless. The > > couple of wafers I have finger prints so they definitely are worthless! I'd respectfully suggest that the concept of value is not quite as straightforward as you suggest, Chandra. How much would your two wafers be worth if I were willing to buy them off you? Postage stamps are just about as 'worthless' as anyone could imagine, yet I'm regularly sent catalogues offering stamps at prices that amount to more than my annual salary.

21 years, 4 months

Collecting silicon wafers

by brian＠quarterbyte.com

> > My interest is in collecting whole, undiced silicon wafers. These > > are much more accessible for research and the interest does not > > conflict with those of other people. They're almost always available at the Foothill College Ham Radio Swap Meet for about a buck a 6" wafer, see e.g. http://www.qsl.net/kf6foz/page1.htm Brian

21 years, 4 months

FS Items

by pat＠purdueriots.com

A few more items I've got to offer to the list. I can take Paypal or Check/Money Order for payment. Everything below is $10 + shipping, with discounts for buying multiple items. + 3Com SuperStack HUB 10: 24port 10BaseT Hub, rackmountable. I've got a lot of these available to me. + Panasonic LaserDisc player + Apple Macintosh Plus 1MB - have keyboard and monitor + Sun SparcStation 5, 85MHz, CG6, 32-64MB ram, 2GB HDD + Tatung CompStation LC - A pizzabox Sun Sparcstation LC clone - CG6, have to check how much memory I have available, probably 4GB HDD I might be adding on to this list later. I'm in West Lafayette, IN. Pat -- Purdue Universtiy ITAP/RCS Information Technology at Purdue Research Computing and Storage http://www-rcd.cc.purdue.edu

21 years, 4 months

New Toys: Friden 1160 & Hyperion & HPL, BASIC ROMs & Tek goodies, MORE!

by rigdonj＠cfl.rr.com

It's been BUSY around here the last couple of days. Significant new finds include: HPL ROM for the HP 9000 200 series computers. I've heard that HP made these and I've been looking for one for five or six years and was beginning to wonder if they really ever made any. But finally found one in an old HP 9826. This adds ROM based HPL lanuage (as in HP 9825) to any HP 9000 200 computer. Also found two more BASIC ROMs for the same machines. One is version 4 BASIC and it includes all the BIN files in the ROM. The other is version 2 BASIC. It doesn't include the BIN files but only takes 20k of RAM to run. I already had a V 2.1 BASIC ROM. Went out to a scrap metal place this morning and found a Hyperion computer. Not sure what model but it has a CRT on the LH side and two 5 1/4" floppy drives on the RH side. The keyboard slides in underneath the CPU. Anybody have boot disks for this one? At the same place I also found a Friden 1160 calculator. Funky looking little beast with a ROUND CRT in it! Anyone have some SPECIFIC suggestions about what to check for before powering it up? Also found a Tektronic TM 500 mainframe with a PG 506 Calibration Generator and a TG 501 Time Mark Generator in it. WaHoo! Been wanting some of this stuff but couldn't justify the cost of it. Other stuff: a Stag 39M200 Microprocessor programming module that will work in my Stag Programmer. (anybody have docs for the 39M200??? I have docs for the 39M100 and the programmer). Also found LOTS of HP 9000 series 200 and 300 computer parts, cards, and disk drives and a pile of Amiga computer cards. Also found three Atalla Multibus cards that appear to be some kind of developement system/programmer for Intel MCS-51s. Anybody know any more about these? Also found a complete Intel 310 computer but my car was FULL so I had to leave it for another time. Even after I came home stuff was still showing up. A friend of mine brought me a Heathkit ET-3400 that he found a garage sale. Joe

21 years, 4 months

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test-drb March 2003