test-drb January 2001

test-drb@ccmp.vtda.org

181 participants
415 discussions

by rcini＠optonline.net

Hello, all: The Altair32 project is progressing nicely. I've completed the coding, so it's feature complete *except* for the Telnet server code. The emulator now can load and save files, accept disk images (the "controller" is the standard MITS 88DSK), and produce printer output. I also modularized it a bit so that it's easier to add devices to it in the future. Obviously, the Telnet server code is key since that's what will serve as the attached terminal. So, we are unfortunately still restricted to using the FP. I have a few bells and whistles I like to add. For example, I'd like to add real Altair fan noise. Spin up. Run. Shutdown. I'd also like to change the FP to the original 8800 instead of the 8800b that was originally used. What I'd want to do is superimpose the graphic switches and LEDs over a picture of an actual 8800. The existing graphics size is 600x320, but I can make it larger if need be. I haven't posted the code to my Web site yet because I'd like to first offer it up for "beta testing" to the ClassCmp group. If anyone is interested in seeing the full source distribution including bitmaps and VC6 project files, please email me off-list and I'll send you a zip file. Just a personal reflection. Before this project, I never programmed in C, much less in "Windows." What a learning experience. I do have to say, though, that C is fairly easy to learn and use, but I'm sure that I'm only using about 20% of what C offers. And even at the end of the project, I still have trouble with pointers :-). Rich ClubWin! Group 1 Collector of Classic Computers Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /*****************************************/

23 years, 5 months

Making an Atari 400/800 Basic cartridge Eprom type?

by mcguire＠neurotica.com

On January 21, Claude.W wrote: > They arent anything obvious, thats the deal... > > AMI 8147BXW (date code...8147...?) > CO12406-01 (your guess...) > (c) 1980 Atari > Korea Hmm...nonsensical numbers... :-( Hey, you could look at the board and see how many address lines are wired up... -Dave McGuire

23 years, 5 months

need information on CDC Sabre 9720-736 SMD

by red＠bears.org

Can anybody please tell me or point me to a diagram explaining which connectors on the back of this disk are for what? In addition, an explanation of how to interpret the diagnostic LEDs on the top panel would be most helpful. Tony, thanks for your information. It was a good start for me, but I need some drive-specific information now. Seagate's web pages are worse than useless for this. ok r.

23 years, 5 months

Making an Atari 400/800 Basic cartridge Eprom type?

by ajp166＠bellatlantic.net

From: Tony Duell <ard(a)p850ug1.demon.co.uk> >> I am suspecting a 2716 or 2732 too but... >> ... > >I'd be suprised if you could fit a reasonable BASIC interpretter into 2K >or even 4K of 6502 code.... Bizzare statement from you. The 6502 was fairly code efficient and there were basics that easily fit in both 2k (integer) and 4k (with floats). >There is/was an 8K*8 mask-programmed ROM in a 24 pin DIL package (one of >the versions of the 2364 IIRC), and I wonder if that's what you have. I >can find pinouts of that ROM in the Rockwell databook if you need them. Yes there was Mask roms were available in both larger and less costly for before the Eprom versions. Allison

23 years, 5 months

Sun monitor cables

by pete＠dunnington.u-net.com

On Jan 21, 20:14, Alex Holden wrote: > Hi, does anyone know where I can get hold of Sun monitor cables (ideally > in the UK)? [...] > They use 13W3 D type connectors, and I > did actually manage to get hold of the connector shells from Farnell, but > they don't seem to be able to get hold of the signal pins for them. Farnell do list the coax inserts (they also stock the high-current power plugs that can be used in other 13W3 appications), and IIRC they list the 13W3 shells in two places in the catalogue (which I don't have handy). They might be out of stock, I suppose. If so, you can also get them from Electrospeed (www.electrospeed.com): 169.23.1415.421 50 ohm straight plug 252-38733D ?4.08 23.2415.421 50 ohm straight socket 252-38734A ?6.17 FMX 003 P102 75 ohm straight socket 252-3104J ?3.05 FMX 003 S102 75 ohm straight plug 252-3106A ?2.36 (I'd check those part numbers; S102 sounds like it should be a socket and P102 sounds like it should be a plug!) Electrospeed also sell Siemens inserts for DIN 41612 mixed-body connectors, which AFAIK are interchangable -- but the Siemens ones are (even) more expensive. You can also get them from RS (rswww.com) or Electromail: 485-164 RG178B/U straight plug ?4.16 485-170 RG174A/U straight plug ?4.57 485-186 RG178B/U straight socket ?4.84 485-192 RG174A/U straight socket ?3.89 You can get the cheap version from CPC (www.cpc.co.uk): CN04661 RG179B/U 75 ohm plug ?1.43 CN04662 RG178B/U 50 ohm plug ?1.43 CN04663 RG179B/U 75 ohm socket ?1.52 CN04664 RG178B/U 50 ohm socket ?1.52 You can get Sun-to-VGA adaptors (both genders), half-pitch 50 D plug (SCSI-2) to 50-pin 3-row D (which is probably what you called "weird oversized-D"), and 50-pin D to 50-pin D from Videk (www.videk.co.uk). -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

23 years, 5 months

Ways to bounce a 1541

by spectre＠stockholm.ptloma.edu

Well, this is more a brag than something constructive, but I wrote my first automatic Commodore 1541 disk drive re-aligner out of desperation this weekend. I couldn't get it to read any disks and since this drive was the internal 5.25" in the 128DCR, I couldn't just replace it. So I wrote a program that commanded the FDC to whack the head into the restraining rail until it could read the disk again. Voila. ;-) The things you do when you're desperate ... -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- Violence is the last refuge of the incompetent. -- Salvor Hardin -----------

23 years, 5 months

Windes ME

by ajp166＠bellatlantic.net

From: Jeff Hellige <jhellige(a)earthlink.net> > Where can PC/GEOS, aka New Deal, be found? It sounds pretty >interesting and something I'd like to check out. > > Jeff Uh try www.newdeal.com I posted it earlier in the string. Allison

23 years, 5 months

Making an Atari 400/800 Basic cartridge Eprom type?

by claudew＠videotron.ca

Hi Anybody ever burn your own EPROM from a rom dump and just put it in a socket of a cartridge? I opened up a cart today to see a socketed ROM in there in only one of the 2 possible PCB locations for chips. I suspect 2 were used in some cartridges...not in the breakout game I opened today. Anybody know what eprom types are pin compatible for these if any? Claude

23 years, 5 months

Windes ME

by ajp166＠bellatlantic.net

From: Cameron Kaiser <spectre(a)stockholm.ptloma.edu> >> FYI: it's only 2mb! Even the dos 6.22kit is larger and >> www.newdealinc.com > >That's PC/GEOS. Trust me, it works. I was a PC/GEOS believer back in the >early days and I think it's one fabulous GUI. Dont have to trust you, I've got it and it does work very well. Allison

23 years, 5 months

SMD cabling information / Symbolics know-nothings

by red＠bears.org

Derek Peschel and I are sitting here scratching our heads making confused noises trying to figure out why my Symbolics is broken. It worked (to a point) before I moved to this new house. Now it's not working even tot hat point. Power good. We can't get the FEP booted. I wonder if I haven't gotten the SMD disk hooked up correctly? At the drive end, there ar four possibilities for where to connect the 60-pin A cable, and two possibilities for where to connect the B cable. I have a terminator. We have wasted lots of time searching the web for this informaiton. How do I hook up the drive so I know it's connected properly? It's a 760 MB CDC Sabre 9720. Help! ok r. ps. Does anybody know enough about these machines to help me troubleshoot it? I think the basic parts all work, but just not yet together. It's a Symbolics 3650.

23 years, 5 months

← Newer
1
...
14
15
16
17
18
19
20
...
42
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb January 2001