test-drb January 2004

test-drb@ccmp.vtda.org

290 participants
643 discussions

by india_50＠yahoo.com

Message: 14 Date: Fri, 16 Jan 2004 22:15:27 -0700 From: ben franchuk <bfranchuk(a)jetnet.ab.ca> Subject: Re: Emulators of Classic Computers To: General Discussion: On-Topic and Off-Topic Posts <cctalk(a)classiccmp.org> Message-ID: <4008C4EF.10003(a)jetnet.ab.ca> Content-Type: text/plain; charset=us-ascii; format=flowed Sean 'Captain Napalm' Conner wrote: > It was thus said that the Great Tony Duell once stated: > >>Steve Ciarcia's bomebrew computers (he did several -- I remember an 8088 >>system in 5 chips, a sort-of PC compatible, a Z8 board without even >>thinking about it) were based on microprocessors. But I do remember a >>Byte article on making a homebrew CPU (from TTL). I think it was called >>'EGO', and hung off a Tandy 2000. > > > I remember that. I still have the Byte magazines the EGO appeared in. > Neat CPU, made for floating point operations if I recall. > > -spc (Fondly remembers bytes from the mid 80s ... ) But it was micro programed with EPROMS. Nice idea. Ben. hey, can u also fwd me a copy of the 'EGO' article ur talking about. plss....... i need it desperately........... pls...... subs here ________________________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html

20 years, 11 months

DEC MINC-11 question

by TRASH3＠splab.cas.neu.edu

If I remember correctly, the MINC-11 is just a Q-bus machine with extra analog/digital I/O for laboratory work. The standard serial I/O on every DEC machine I've used has been just 3-wire (recieve,transmit, ground), XON/XOFF, 9600 baud, no parity, 8 bits. You can use Hyperterm IF you set it up for software handshaking. If you forget to change it, then the default is hardware handshaking and hyperterm will appear hung. the m8012 (BDV-11) has two switches on the edge, halt enable and restart. Halt enable is used to put it into ODT. Lights: The green led is power ok. if all 4 red leds are on, then the system is hung; halt switch or power up mode wrong. At least that is the message in the interfaces handbook. Make sure your VT102 is not in local mode, they like to switch to that sometimes. Joe Heck

20 years, 11 months

DEC MINC-11 question

by Steven_R_Hutchins＠raytheon.com

Thanks, seems like when I turned the intensity up on the CIT-101 video terminal the error was "checksum error NVR 00" and the error was there, even with the MINC-23 off. NVRAM in the terminal must be bad. I replaced the C.ITOH model CIT-101 video terminal with a DIGITAL VT-102, I get the flashing cursor in the upper left hand corner of the VT-102 with no errors in NVRAM , but the terminal does not talk to the MINC-23. I am not familiar with how the MINC communicates to the terminal. I have baud rate on VT-102 set at 9600 for both RX and TX. I do not see even an echo on my keystrokes on the VT-102. I have no docs on the terminal or the MINC. Can I use a PC running hyperterm or procomm to talk with the MINC? The M8012 boot card has 5 LEDs, red,green,red,red,red and all of them are continuously illuminated. What are the functions assigned for these LEDs? Hutch ard(a)p850ug1.demon. co.uk (Tony Duell) To: cctalk(a)classiccmp.org Sent by: cc: cctech-bounces@cla Subject: Re: DEC MINC-11 question ssiccmp.org 01/16/2004 06:26 PM Please respond to "General Discussion: On-Topic Posts Only" > > > > > > Classic comp lister's, > > I have MINC-11 ( seems to be a MINC-23 in a MINC-11 box) with the The field upgrade from MINC-11 to MINC-23 was basically just swapping the CPU card. Sounds like somebody (not DEC failed circus?) did this and didn't change the nameplate. > following: > It only has these cards inside: > M8186 CPU > M7506 MEM > M8029 RX02 DISK CONT > M7954 IEEE CONT > M8043 4510 MUX Card > M8012 Boot Card > > This was a working unit until recently when I consistantly get > "checksum error KVR 00" on bootup. That doesn't sound like a DEC bootstrap message. Are you sure it's coming >from the MINC and not from whatever you're using as a terminal? -tony

20 years, 11 months

EPROM eraser needed

by dwight.elvey＠amd.com

>From: "John lambert" <cncmedic(a)sbcglobal.net> > >JACK --- CHEAP QUICK EPROM ERASER-- > SANYO DENKI GERMICIDAL ULTRAVIOLET LAMP > NO. G6T5 WITH ADVANCE TRANSFORMER CO. NO. LC-4-8-C >BALLAST 120 V. AN FS-4 FLOURESENT STARTER. A >RECEPTACLE TIMER TO CONTROL LENGTH OF TIME LAMP IS ON. >MOUNT LAMP 2.5 CM ABOVE PROMS LOCATION IN AN ENCLOSED >LIFT LID BOX. A LIMIT SWITCH ON THE LID TO SHUT LAMP >OFF WHEN LIFTED. SAFETY MEASURE THAT LAMP WILL BURN >YOUR RETINA'S. JACK AT ESHOP. Hi Actually it doesn't hurt your retina, it damages your cornea. This frequency of uv doesn't penetrate very far into the eye. This means that extra care is needed since it isn't just a matter of looking at the light. Any direct path from the lamp to the surface of your eye can cause damage. Most reflected uv light is attenuated quite a bit and is not as dangerous but one should still design their box to avoid reflective surfaces like aluminum. Even though 90% or so is lost, these lights are intense. Cardboard or conductive foam has about 0% reflections. One can get an idea of the reflected quantity by placing a piece of 'T'shirt near. It will glow if hit by the uv. Dwight

20 years, 11 months

Digi Comp 1 still open on eBay

by jrkeys＠concentric.net

Someone is selling a Digi Comp 1 on eBay right now it's at $100 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3169710286

20 years, 11 months

stuff destined for trash, speak up if wanted (more)

by msokolov＠ivan.Harhan.ORG

Jay West <jwest(a)classiccmp.org> wrote: > Also have a bunch of old pc monitors that will be hitting the trash, > not gonna post those! If there are any original IBM (not clone) VGA monitors or cards, I would be very interested, so don't trash those please! MS

20 years, 11 months

Wyse 9000?

by stevew＠ka6s.com

Has anyone seen or do they HAVE the Wyse 9000 multiprocessor chassis? This was a machine built by Wyse around 1990 that was based on Sequent's bus technology that was a multi-processor system based on 386's or 486's running Sys V? Steve Wilson

20 years, 11 months

Emulators of Classic Computers

by aek＠spies.com

OK, using a 1 million gate FPGA to replace a 7400 is overkill, but it would work -- Not if the FPGA isn't 5v tolerant. It isn't very likely that a device produced in five years will be useful as a replacement for 7400 series logic, much less in 50. We've left the days of logic level compatibility behind us unfortunately. 3.3v logic is even disappearing pretty quickly now, and that didn't last a decade.

20 years, 11 months

Estimated Value of an ASR-33....

by dvcorbin＠optonline.net

Looking for peoples estimate of the value of an ASR-33 with working paper tape reader/punch (and of course keyboard/print), modem is quite optional. I am starting to search for one to add to my collection and am not sure what price range is reasonable these days.... Also if anyone has one that they want to sell (especially if located in North East US), please contact me directly. David Corbin dvcorbin(a)optonline.net

20 years, 11 months

ASR-33 Value....

by david＠dynamicconcepts.us

20 years, 11 months

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test-drb January 2004