test-drb

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101090 discussions

Reproducing old machines with newer technology

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning >> I have a hard time coming up with other machines with the same level >> of impact/influence, in terms of CPU internal architecture. Maybe >> Atlas, or the 801? > CDC 6600, of course. I guess I don't know the 6600 that well (I have the book, and have skimmed it in the past). What are the novel features in the 6600 that were widely adopted by other machines? (I listed the Atlas because of paging, and the 801 because of RISC.) Noel

10 years, 11 months

PDP-12 at the RICM (Michael Thompson)

by michael.99.thompson＠gmail.com

We received more documentation from the donor last week so we were able to run the processor LINC instruction tests. The new docs are already scanned and on Bitsavers. The LINC diags failed, but we quickly found the bad M160 flip-chip and now both LINC diags run OK. We continued debugging the "LGP GP=GPC PRESET" problem in the TC12 LINCtape controller in the PDP-12. After LOTS of signal chasing we eventually found that the timing track signals in the right TU56 tape head are open. I had the same problem with the TU56 in my PDP-8/e and the tape head is probably impossible to fix. -- Michael Thompson

10 years, 11 months

Looking for keyboard for a BLIT / Teletype / AT&T terminal

by ian.finder＠gmail.com

Hi Folks, I need help hunting down an item. This is a keyboard that shipped with a few AT&T / Teletype terminals with a 6-pin RJ connector. I recently obtained a BLIT terminal and would like to find a keyboard (and mouse- the red lady bug one- if possible- but the keyboard is quite necessary) Also any advice on how to deal with screen rot would be appreciated. Thanks, - Ian

10 years, 11 months

STSC APL*PLUS System for VAX VMS User's & Reference Manual

by mark＠wickensonline.co.uk

For those who expressed an interest in the STSC APL*PLUS manuals for VAX/VMS I happy to report they are now available from here: http://wickensonline.co.uk/static/files/scans/APL-Plus-System-for-the-VAX-V… http://wickensonline.co.uk/static/files/scans/APL-Plus-System-for-the-VAX-V… Apparently the free PC version is very similar to the VAX/VMS version so these manuals should be of direct use. You can run the PC version of APL*PLUS within DOSBox and it is available here: http://www.math.uwaterloo.ca/apl_archives/apl/apl-plus/ Regards, Mark.

10 years, 11 months

MC68451 datasheet wanted

by spacewar＠gmail.com

Looking for an MC68451 datasheet (or scan). Most of the ones that turn up from the usual database sites are actually for the MC68450 DMA controller, which is entirely unrelated. The only one I found that is actually for the MC68451 was "Advance Information" from a databook, and did not include the pin grid (R or RC suffix) pinout. There was a "loose" (not in databook) datasheet that is more recent, labeled "Preliminary" rather than "Advance Information", and later versions of that include the pin grid pinout. Does anyone have that?

10 years, 11 months

docs & sw wanted for Heurikon HK 68/ME-2 and HK 68/M10-3, Micro Memory Inc. MM-9000

by spacewar＠gmail.com

I've got one each of the Heurikon HK 68/ME-2 and HK 68/M10-3 multibus boards. There are brochures on bitsavers, but does anyone have documentation, schematics, or software for either of these? It also would be nice to get documentation, or at least switch and jumper settings, for the Micro Memory Inc. MM-9000 Multibus/iLBX RAM board. I have the 4MB version, using 144 256K DRAMs (includes parity), but there was apparently also a 1MB version using 64K DRAMs. Aside >from the DRAMs I expect the difference is in the jumper or switch settings.

10 years, 11 months

OpenVMS Alpha V7.3

by scaron＠umich.edu

Anyone got an ISO handy? Trying to get my 3000/400 up; V7.0 firmware; and it does not like the OpenVMS V8.4 ISOs I got from HP ... I do have a valid Hobbyist license ... please chat with me off-list? Thanks, Sean

10 years, 11 months

keys, motorola 88k system series 900

by emu＠e-bbes.com

With all this talking about keys ... Anybody know where to get a spare one for the system above? Cheers & thanks ...

10 years, 11 months

PDP8/e front panels A and B

by rodsmallwood52＠btinternet.com

Hi Guys! I now have prototype artwork for the two types of 8/e front panel. They differ only in the switch markings. They do both have the same extra (but cosmetic only) features over the first run. Regards Rod

10 years, 11 months

Retrochallenge Update (was Re: How many use old browsers (e.g. =< Netscape 4 or IE 6) as their ONLY source of web content?)

by terry＠webweavers.co.nz

On Fri, Jul 3, 2015 at 10:26 AM, Terry Stewart <terry at webweavers.co.nz> wrote: > Hi, > > I'm engaged in a Retrochallenge project where I'm recoding my > classic-computers.org.nz site to make it suitable for mobile platforms. > I want to modernise the code as well, making it as close to HTML5 standard > as I can > > Since I did ask about this, some on this list might be interested in my progress with this project. The pages are still a long way from conforming to strict HTML5 standards but at least they are now all mobile-friendy. http://www.classic-computers.org.nz/blog/2015-06-29-recoding-classic-comput… Cheers Terry (Tez)

10 years, 11 months

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