test-drb March 2008

test-drb@ccmp.vtda.org

209 participants
369 discussions

by vwsage＠adam.com.au

Hi, I have an old NEC H03 APC III that has the inbuilt twin 8"floppies & colour screen. I have blown the High Tension transformer on the board to the left of the VDU. Wondering if anyone has parts for this old beastie. I used it to run EZCAM for 2axis CNC machining & would love to get it going again.

16 years, 9 months

Anyone got a NEC APC

by trebor72＠execpc.com

I got my NEC APC running and was able to create a floppy that boots with Seattle Dos 2.0 on it. Most of the Programs seem to run. But if they don't then I overlay them with the ones from my MS-DOS 2.0. Strangly the dates on both Systems are really close; Late 1982 for the MS-DOS and early 1983 for SCP-DOS Got to figure out how to put a Boot for my CompuPro 816 on a floppy so I can boot to Dos on the CompuPro I may need a replacement 8" drive for one of my Two APC's TIA Bob in Wisconsin

16 years, 9 months

S100 archive?

by jfoust＠threedee.com

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 -- No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1327 - Release Date: 3/12/2008 1:27 PM

16 years, 9 months

Plan 9, GNOT, 5620 terminals

by blstuart＠bellsouth.net

From: Jeff Jonas <jeffj at panix.com> > > From: "John Floren" <slawmaster at gmail.com> > > > I already have VMS on my Alpha and the VAX; if I can't get Research > > Unix on the VAX, I'll stay with VMS. The later additions to Research > > Unix evolved in some interesting directions which eventually led to > > Plan 9, the OS I develop for at work. > > Are you also using Inferno and Limbo? > The last I knew, Rob Pike was still active with Plan 9. > Can't you ask him directly since any Plan 9 user > ought to be a "close personal friend of ..." :-) > Or is all that gone with the Alcatel merger? You might want to check out the 9fans mailing list. There also one for inferno, though you'll see some inferno discussion on 9fans too. You can get to them at: 9fans-request at 9fans.net (used to be 9fans-request at cse.psu.edu) inferno-list-request at vitanuova.com As to the people, Rob, and some of the others, are at Google now. They still frequent the list, but aren't actively involved anymore. On the other hand, there are several who are still involved as well as a small, but strong community. And no, we're not all close personal friends. In fact, I haven't even met any of them. Before his retirement, Dennis was on the list and he would probably have a pretty good idea if any of the 8th-10th editions were still around. At least in the fall, he still had his office at BellLabs but I don't know if his email address there still works. BLS

16 years, 9 months

MMC Replay and RR-Net for C-64

by healyzh＠aracnet.com

The following eBay seller has a few MMC Replay's and RR-Net's available for the Commodore 64. http://stores.ebay.com/Reds-Retro-Computing-Extravaganza I've not dealt with this seller before, but I just finished ordering mine from him, so should hopefully have it sometime next week. I'm excited to get it, as the new MMC Replay (the MMC64 and Retro Replay carts combined into one) allows mounting of D64 and D71 images. Not quite as good of a solution as the 1541-III would be, since it won't allow you to use a REU, but I don't own a REU anyway. If you're like me and had wanted to get the MMC64 and Retro Replay, but had never managed to get one, the MMC Replay looks to be a pleasant surprise. It has new features, and is supposed to be more compatible with the C64 and C128's. More details and the manual can be found here. http://www.vesalia.de/e_mmcreplay.htm Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com (primary) | OpenVMS Enthusiast | | MONK::HEALYZH (DECnet) | 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/ |

16 years, 9 months

Anyone collect Compugraphic equipment?

by wendywally＠msn.com

HI, I see your posting from over a year ago. My dad has a Compugraphic Editwriter from 1978? that he wants to sell or a very nominal price. Do you have any idea where I can start looking for an interested party? Thanks Wendy

16 years, 9 months

Reverse-engineering Snap (Panasonic HHC)

by eric＠brouhaha.com

I've confirmed my earlier guess that Snap uses bytecode rather than pointers as a normal FORTH. The BRK instruction ($00) is used for entry into Snap, and is followed by bytecodes. The interrupt handler checks the B flag to see if a BRK occurred. If so, it pulls the PC from the stack into registers, subtracts one, and stores it into the Snap instruction pointer at $0015/16. The BRK handler and Snap primitives end with a jump to NEXT at $0009, which points to $CC2E. The code there fetches the byte pointed to by the Snap instruction pointer, and depending on the two high order bits, jumps indirect via jump tables from $c000-$c0ff, $c100-$c17f, or $0000-$007f. At least, that's what happens if the contents of $66 is zero. If it's non-zero, it goes somewhere else, and I haven't figured out what's up with that. Anyone else ever dig into the innards of Snap? Eric

16 years, 9 months

Looking for a M8330 or a couple of SN74194's

by RodSmallwood＠mail.ediconsulting.co.uk

Hi Tony I agree that the concept of originality is important in what we do. The system I have is original in the sense that all the parts are >from the right era. However the current configuration is not that as stated on the factory label. You could also say that any item with a date of later than the manufacturing date and not the result of a repair or upgrade is not original. Thanks for the tip re Cricklewood I will contact them. I must say that for the few days it did work I was really pleased with it. I had got as far as sending a stream of characters out to a screen at 110 Baud. I had forgotten how few instructions you needed to get it to do something useful. I actually used to service PDP8's at Harwell circa 1971. The first type had a large number of small boards with transistor based logic on them. The other type were as the one I have, using mainly TTL plus something that needs +3 Volts. -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: 27 March 2008 22:25 To: cctalk at classiccmp.org Subject: Re: Looking for a M8330 or a couple of SN74194's > Now I need either a couple of 74194's or an M8330 board.=20 The former being a lot easier to find than the latter, quite apart from the moral aspect of keeping the machine as original as possible. I don;t know if they have them, but have you tried Cricklewood Electronics? They had some 74(LS)95 chips when I needed them to repair an old HP machine, and seem to be the only place that did. -tony

16 years, 9 months

Looking for info on VT284 and VT286

by a-kelavkar1＠ti.com

Sir, Do you VT286 units in stock? Price? Thanks, Abhi Texas Instruments (Houston) 281-274-2917

16 years, 9 months

ROM BIOS

by cclist＠sydex.com

> Date: Wed, 26 Mar 2008 14:12:02 -0500 > From: Randy Dawson > IBM's software would not run on a machine that did not have "copyright > IBM" in the BIOS. > > hahaha their workaround made them the most compatible clone. Actually, a lot of people spent a lot of time reverse-engineering the IBM BIOS. You really don't get a sense of this until you realize that Phoenix not only made sure that the functionality of the BIOS routines was the same, but that the routines themselves were located at the same place in memory. I wonder why this wasn't done with the Mac ROMs? Fear of Apple suing? Anyone know for certain? Cheers, Chuck

16 years, 9 months

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test-drb March 2008