test-drb August 2011

test-drb@ccmp.vtda.org

143 participants
153 discussions

by wgungfu＠gmail.com

Hoping someone from the list can help, I'm trying to track down a Northern Telecom DisplayPhone for the archive. http://dxiconsulting.com/images/northern%20telecom%20displayphone%20circa%2… Actually had one years ago as a kid, and what I used for BBS'ing in the early 80's. So it holds sentimental value besides archival. -- Marty

12 years, 11 months

Walnut Creek 1994 CP/M CDROM disk differences

by aek＠bitsavers.org

I just posted this on comp.os.cpm There is no indication other than the mastering number on the disk that they are different. Now I'm wondering how many other Walnut Creek CDROMs have deleted content. --- > Hallo, > > For the sake of redundancy, conservation and fun: > an ISO of the Walnut Creek CDROM. > Thank you. I just discovered there are TWO versions of this disk! The one you have has versions of teledisk removed, and has directories dated Jan 31, 1995 The original have directories dated Oct 25, 1994. here are the only two files that differ in 00-INDEX.TXT > TELED210.ZIP 89957 01-09-94 Disk utility that can read complete CP/M > | disks and copy them to a file to be recreated > | or transmitted. > TELED214.ZIP 139264 01-07-94 Upgrade to Teled210 disk program- See > | Teled210 for complete Manual and > | documentation. md5 of original is 42571cceef022c582f02dabb4ac68e2c md5 of 1995 version is faa8c5ba9d1184b7bfc34d999a8c42c4

12 years, 11 months

mystery panel

by jeffj＠panix.com

Can anyone identify the diagnostic panel? http://ferretronix.com/march/dm160_dage/ It's 18: DM160 indicator tubes with hand-written legends, possibly from an AT&T 1ESS or early switch. I also need help with my Dage Scientific MC-3 1802 processor development system. It is similar to the RCA COSMAC ELF. But it is MISSING the keyboard/display panel! Just the manual and/or schematic would help me. Thanks in advance -- Jeff Jonas

12 years, 11 months

Tony Duell's maxed out 5160 and PDP

by jeffj＠panix.com

replying to ard at p850ug1.demon.co.uk (Tony Duell) >> Nice! There's been a resurgence in appreciation of the "classics". > The 5160 I just mentioned with 4 floppy drive How did you accomplish that? - a controller that honors all 4 drive selects, not just 2 - primary & secondary disk controller - Compaticard or other disk controller at "non-standard" address & IRQ? My pre-PC systems (mostly Z80 CP/M) all support 4 floppies per the original specs. But NOOOOOOOOOOOOOO, the PC's "cable twist" ruined that, limiting things to 2 floppies and 2 hard drives per controller. Not 'till SATA have we been able to un-do that mistake :-( > 2 hard drives Awww, come on, you can do better than that :-) I have a 80386 DOS system running MFM, ATAPI/IDE and SCSI. The "4drives" shareware was the first DOS support I found for the hard drive controller at alternate addresses & IRQ. > MDA and CGA cards, Dual display? What programs support that? > 4 serial ports, 24 line user I/O (8255-based), etc. > Not all original IBM of course Ah yes, that reminds me of the excitement of reading Computer Shopper and all the computer shows, always with new upgrades: higher res graphics, more memory, etc. Every month or so, ALL the vendors had a different brand of add-on card. For a while it was a box with a king playing card on the cover. Then Pine Technologies. Then something else. For those of us USING the stuff at the time, we were always upgrading it piece by piece. That's why it's so hard to find one with all original parts. > A PDP8/e with 32K words of real core Do the boards have clear plastic for you to see the cores? That's such a treat: true non-volatile memory! >> My high school started everyone with programming BASIC >> on the HP 9820A: > I find that hard to believe for one good reason. > The HP9820 never ran BASIC... You got me there. It was kinda almost similar to BASIC. It's so close that I totally forgot when I converted to BASIC. Since BASIC has so many "dialects", I guess that fuzzed my memory a little. Thanks for the clarification. > The HP9820 was HP's first infix-notation > (as opposed to RPN/postfix) calculator > and used a language that developed into the 'HPL' of the 9825 etc. It was such a pleasure using an instant response interactive machine! No waiting for carriage-return for the interpreter to handle the line or waiting for the compiler for an all-or-nothing result. > You may have guessed I have something of a soft spot for these machines. As an undergrad, I never had the budget for a HP calculator nor access to a HP desktop like my high school's. Somehow a TI-55 sufficed for me as an EE undergrad. Looking back, I just can't see how. It's *SO LAME*. I got a HP-28C when it was new and it's still my primary calculator. I really need that 4 line display to use RPN so I can see the stack. -- jeffj

12 years, 11 months

Operating System Design: The Xinu Approach, Linksys Version

by stephane.tsacas＠gmail.com

For those interested, a new book : Operating System Design: The Xinu Approach, Linksys Version Douglas Comer http://www.amazon.com/Operating-System-Design-Approach-Linksys/dp/143988109… ISBN-10: 143988109X ISBN-13: 978-1439881095 TOC : http://www.routledge.com/books/details/9781439881118/ -- Stephane Join Kiva http://kiva.org/invitedby/stephanefr join the team http://www.kiva.org/team/kathleen

12 years, 11 months

LA50 Manuals

by robert.jarratt＠ntlworld.com

The two LA50 manuals listed on MANX don't seem to be accessible, and a web search for them does not seem to turn up anything, does anyone have EK-OLA50-IP-003 or EK-OLA50-TM-001? By the way, anyone know of any UK sources of tractor feed paper that would suit an LA50? Thanks Rob

12 years, 11 months

Wow! Great OSI collection for someone in MI...

by silent700＠gmail.com

On Sun, Aug 7, 2011 at 7:38 PM, Bill Sudbrink <wh.sudbrink at verizon.net> wrote: > I wish I was in or going to Michigan... > > Ebay lot # 310337111857 The same seller also has a very complete, incredibly cool Varityper typesetting system for $notmuch. I would love to rescue it but it's well beyond my means (storage & transport) at this time. I am hoping someone else will make arrangements to save it. This guy looks like he's a scrapper! -- jht

12 years, 11 months

That darned HP card reader...

by jdr_use＠bluewin.ch

I give up. The 11'th attempt at repairing that gummy drive wheel resulted in yet another unround wheel that is unable to smoothly transfer cards. I just cannot seem to find the exact size of tubing, anything constructed with heatshrink just is not round. The clutch operation seems to be OK. Anyone wants to sell me a few inches of KNOWN WORKING ( i.e. correct size ) tubing ? Jos

12 years, 11 months

museum name contest

by mtapley＠swri.edu

At 19:10 -0500 8/9/11, Richard wrote: >My friend who works with non-profits tells me that "Computer Graphics >Museum" is too boring for fundraising. He wants me to come up with an >alternative name that we can use. "Pixels, Bits, and Cobwebs" -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

12 years, 11 months

S-100 Serial IO and S-100 EPROM PCBs available

by lynchaj＠yahoo.com

Hi, If any one needs S-100 Serial IO and S-100 EPROM/RAM PCBs to restore their S-100 system or even build their own from scratch please contact me. There is more information here: http://s100computers.com/My%20System%20Pages/Serial%20IO%20Board/Serial%20I… http://s100computers.com/My%20System%20Pages/PROM%20Board/PROM%20Board.htm There are plenty of each PCB left although the S-100 EPROM/RAM boards are starting to get low. Thanks and have a nice day! Andrew Lynch

12 years, 11 months

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test-drb August 2011