test-drb March 2008

test-drb@ccmp.vtda.org

209 participants
369 discussions

by david＠cantrell.org.uk

Dunno if this will be considered on-topic or not, as it's not about real hardware - if not, my humble apologies. Last night I released a Z80 emulator written in perl to the CPAN. You can download it from: http://search.cpan.org/~dcantrell/CPU-Emulator-Z80-0.9/ and the source is in CVS on sourceforget: http://drhyde.cvs.sourceforge.net/drhyde/perlmodules/CPU-Emulator-Z80/ It emulates almost all of the "undocumented" instructions, I/O, and interrupt mode 1. I am very grateful to the author of FUSE for licencing it in such a way that I could use his comprehensive suite of tests. Now I have to write an assembler, and have the fun of writing an operating system :-) -- David Cantrell | A machine for turning tea into grumpiness On the bright side, if sendmail is tied up routing spam and pointless uknot posts, it's not waving its arse around saying "root me!" -- Peter Corlett, in uknot

16 years, 4 months

Decmate

by djg＠pdp8.net

>Thanks for the os78 source site - thats awesome! How does one normally get >these images onto a disk? I' not sure if the older PCs supported 8"FDD. >I would need something like Teledisk as well. > With earlier 8's which you can manually load code into I have dump and restore programs you can use. On the VT78 their is no way I know of to get code into it without a special ROM on the back. Some older PC's controllers will work with 8" disks. I tried it so I could format but never got it working before I got a drive that could format itself. Don't know if its the PC or drive I was trying to use. PUTR looks like it should work http://www.dbit.com/pub/putr/. I have used it for RX50 disks but not 8". I think the images I have are compatible with it. This may also work but I am not familiar with it. http://www.dunfield.com/dave/dsktools.htm If this doesn't seem practical email me, I can make you a disk. Won't guarantee how prompt though.

16 years, 4 months

Apollo Domain 300 series in UK looking home

by paco.linux＠gmail.com

Hi: This is in the newsgroups: http://groups.google.com/group/comp.sys.apollo/browse_thread/thread/a53796e… Paco

16 years, 4 months

pdp-8 tapes on ebay

by brad＠heeltoe.com

I suppose there's little chance the person who just bought the pdp-8 paper tapes on ebay is on this list. but if you are, could you read them make and them available on the web? thanks, -brad

16 years, 4 months

Fw: TI-74 S calculator

by elromano1989＠wp.pl

----- Original Message ----- From: roman.frankowski To: cctech at classiccmp.org Sent: Thursday, March 13, 2008 5:27 PM Subject: TI-74 S calculator Hello !!! I've got a calculator TI-74 S, and I don't have a instruction of this calculator. So, can You sent in my mail all about TI-74 S???

16 years, 4 months

stock tickers

by dgriffi＠cs.csubak.edu

A big part of my involvement in classic computers comes from a fascination for antique machinery. For instance, I'm fascinated by old glass-domed stock tickers. Now, I can buy an exacting reproduction for some $25,000 or $3,000 from the stocktickercompany.com. That's way too pricey for me, so does anyone here know where I can get a fixer-upper? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

16 years, 4 months

PCB EAGLE CAD and simple Z80 computer design

by lynchaj＠yahoo.com

Hi, I am interested in making a simple Z80 computer. I would like to use a CAD program, preferably one with autorouting, to design a PCB for it rather than use prototype boards. Eagle PCB CAD looks promising but I have no experience in using a PCB CAD program. As this is a hobby, I'd like to keep the costs less than $200. The hobbyist license costs $125 which would be ideal. http://www.cadsoftusa.com/ I tried Kicad but it did not work very well for me. I was able to layout the schematic but the PCB layout was very complex and many of the parts were not supported correctly. I was not able to get the autorouting feature to work well either. Has any one use the Eagle CAD program to make a simple SBC and can offer some advice on how to do make my own PCB for a Z80 SBC? I'd like to start small so here is the circuit I have selected: http://z80.info/gfx/z80test.gif Has anyone done this and would be willing to advise and/or work on a Z80 SBC project? Thanks! Andrew Lynch PS, I think this is "on topic" since Z80 SBCs are definitely "classic computers" like in NorthStar, KayPro, WaveMate, Zenith, Vector Graphic, etc.

16 years, 4 months

S100 archive?

by dm561＠torfree.net

---------Original Message: Date: Sun, 16 Mar 2008 21:21:46 -0400 From: "Kelly Leavitt" <kelly at catcorner.org> Subject: RE: S100 archive? > Does anyone recognize this archive as a mirror of other spots? > > http://maben.homeip.net:8217/static//S100/index.html > > It seems to be connected to majzel.com, registered to a > Agata Majzel, Flat 22, 27 Hereford Road, London W2 4TQ. > > - John Seems like a case of "My archive is bigger than your archive." I see stuff in here from a lot of different archives and personal web sites. Kelly ----------Reply: Is this a problem or do you just like to belittle someone's hard work? As a fellow Cromemco fan I happen to know Marcus, the person behind that site (in Switzerland btw.) a little bit and I know for a fact that he has spent an enormous amount of time and effort scanning and indexing material that is not available elsewhere. Is there a problem with adding material that *is* already available in order to make a section as complete as possible, and to have it conveniently findable in an index? If any of the actual "owners" of that material want to keep it to themselves and *THEIR* site, I'm sure he would remove it. I've also never known him to brag about it in any way, only to point to his site on occasion when he runs across someone on a forum somewhere looking for something that he has. Since it's my own interest and in a very tiny part my contribution, I defy you to find any one of many dozens of his 300+ Cromemco documents elsewhere, unless they've been copied from his site. Compare it to bitsaver's Cromemco collection for example (6 manuals at last count, although I don't in any way mean to belittle Al's enormous effort), or even Harte's site which is one of the better ones. That's not to mention the actual code and disk images which are even rarer anywhere else, all a work constantly in progress. It's comments like yours that make some people ask why the hell they bother; I hope you don't have to grit your teeth one day and retrieve some elusive boot disk or manual from his site... And if you prefer to Google through the many fragmented and scattered sources on the Internet, by all means do do. m

16 years, 4 months

Emailing: PCB EAGLE CAD and simple Z80 computer design.htm

by lynchaj＠yahoo.com

On Tue, 18 Mar 2008, Andrew Lynch wrote: > Hi, > > I am interested in making a simple Z80 computer. I would like to use a CAD > program, preferably one with autorouting, to design a PCB for it rather than > use prototype boards. > > Eagle PCB CAD looks promising but I have no experience in using a PCB CAD > program. As this is a hobby, I'd like to keep the costs less than $200. > The hobbyist license costs $125 which would be ideal. Have you looked at gEDA? -- David Griffith dgriffi at cs.csubak.edu <http://www.classiccmp.org/mailman/listinfo/cctalk> A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? ________________________________ -----REPLY----- Hi Dave, I did try gEDA about a year ago and I recall having problems finding the Zilog chips supported by the library. Maybe that has changed? I downloaded the Eagle freeware version just to test drive it. I was able to make a rough layout of the SBC with out the chips placed on the schematic. Of course, I would still have to connect all the wires and such but at least the bare minimum components seem to be present and supported. It even gave a crude layout of the PCB, again with no traces due to no connections. Even with that simple Z80 SBC, it exceeded the capacity of the Eagle free version PCB. Has anyone used gEDA to make a simple Z80 SBC or something like it? Thanks! Andrew Lynch

16 years, 4 months

PDP-8 games with VC8/VR14 display?

by djg＠pdp8.net

>I am curious about the existence of PDP-8 games making use of a CRT >display. Would be fun to have more than Spacewar... > I haven't found much. The Kaleidoscope was fun to play with. Its in the 8E small computer handbook page 7-51 (page 53 of scan below) http://www.pdp8online.com/pdp8cgi/query_docs/view.pl?id=126 Java version at http://www.scoundrelspoint.com/kaleidoscope/index.html for people who don't have a VC8E. I have a tape of PDP-12 games online that I though about porting but haven't. They seem to be mostly 8 code (binary only). >And: I found a SPCWR3.PA somewhere on the web. It has built in support >for the LAB-8/e programmable real time clock. But... The clock doesn't >generate interrupts, display is painted only on a key stroke. Anyone a clue? > Are you sure you set the defines correct when you built it to select that clock? That your clock is working? I would either manually check out the clock or run the diagnostics. I have run it but using the 60hz clock. http://www.pdp8online.com/pdp8cgi/query_docs/query.pl?Search=dk8e&stype=Par… See dhdkaa.dg http://www.pdp8.net/pdp8cgi/os8_html?act=dir;fn=images/os8/diagpack2.rk05;s…

16 years, 4 months

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test-drb March 2008