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101090 discussions

Got a request for an image of CP/M for Morrow Disk Jockey

by billdegnan＠gmail.com

I got a request through my web site for a CP/M System Boot Disk for the Morrow Disk Jockey DMA Controller Board. Anyone have an image I could make to help this guy out? Thanks BIll

8 years, 10 months

Horrible error in "pdp11 bus handbook"

by jnc＠mercury.lcs.mit.edu

Just a heads-up that the 1979 edition of the "pdp11 bus handbook" has a very serious editing error in it, in the description of UNIBUS arbitration. On page 38, immediately after step 13 of the NPR Arbitration Sequence ("13. .... SACK must be negated before BBSY may be negated."), it says "A bus master may issue an interrupt command to the interrupt fielding processor." Despite its location in the text, this does __NOT__ apply to the "NPR arbitration sequence" being discussed above. There is an editing error - this text is (or _should be_) separate from the "NPR Arbitration Sequence" section just before it; it belongs with "BR Interrupt Arbitration Sequence" - that header (on pg. 39) was put in the wrong place. The 1975 "peripherals handbook" has very similar text, but it _does_ have a section header after the NPR details (line 13 is identical), and before the start of the (very similar) BR text ("A bus master that has gained control ... through a BRn/BGn arbitration transaction may issue an interrupt command to the processor."). Noel

8 years, 10 months

Chip in first Apple AirPort WiFi

by t.gardner＠computer.org

Anyone know which Lucent semiconductor device or devices were used in the first Apple AirPort, the Lucent board was " Lucent WaveLAN Silver PC Card" but I'd like to know the devices used. Tom

8 years, 10 months

Re: Extracting files off “unknown” 8 inch disks. Any thoughts…

by terry＠webweavers.co.nz

Hi, Just an update on this. I still haven't got those 8' floppies of unknown origin to play with but I HAVE made a lot of progress with my own disks. Thanks to everyone who gave me help with this. Here's a writeup for those interested: http://www.classic-computers.org.nz/blog/2017-04-15-adventures-with-an-8-in… Terry (Tez)

8 years, 10 months

cctech Digest, Vol 34, Issue 15

by bill.gunshannon＠hotmail.com

________________________________________ From: cctech [cctech-bounces at classiccmp.org] on behalf of Tim Mann via cctech [cctech at classiccmp.org] Sent: Sunday, April 16, 2017 8:13 PM To: cctech at classiccmp.org Subject: Re: cctech Digest, Vol 34, Issue 15 Brief comments on a couple of topics... I hadn't heard of the MISE or M3SE before, so I googled. Remarkable projects. It's pretty tempting to get an M3SE to play with on the Model 4P that I bought as a reference platform when I was adding 4P support to xtrs. (I don't have any other physical TRS-80s anymore.) Time continues to be a big problem in the way of doing retrocomputing stuff, though. _____________________________________________ Definitely worth it. It will boot directly from the M3SE making it a lot easier to do stuff. And with the FTP capability I just had an old BASIC program I ran years ago that I wanted to revive. Used FTP to move it back and forth between my Model 1 and a Unix system in order to have a real editor for fixing all the mistakes. Then used FTP to move the program to the 4P to test it out there as well. Never realized the speed difference in the various models until I cold run stuff like this side by side. bill

8 years, 10 months

cctech Digest, Vol 34, Issue 15

by pete＠pski.net

> On Apr 16, 2017, at 8:13 PM, Tim Mann via cctech <cctech at classiccmp.org> wrote: > > I hadn't heard of the MISE or M3SE before, so I googled. Remarkable > projects. It's pretty tempting to get an M3SE to play with on the Model 4P > that I bought as a reference platform when I was adding 4P support to xtrs. > (I don't have any other physical TRS-80s anymore.) Time continues to be a > big problem in the way of doing retrocomputing stuff, though. > Good to hear from you, Tim. Speaking as someone else with the lack of time issue these days, the M3SE makes using the TRS-80 so much simpler and easier that you get to actually spend time using it rather than spending your little spare time getting it working.

8 years, 10 months

Extra copy of DOS Programmer's Handbook available

by useddec＠gmail.com

Hi Noel, I don't think I need it it but I know someone on the list for about a year that probably does. Let me know the status. Can you call sometime this week? Thanks, Paul

8 years, 10 months

Program Logic Manual (PLM) for APL\360 or APL.SV?

by spacewar＠gmail.com

Did IBM publish a Program Logic Manual (PLM) for APL\360, APL.SV, or any other APL language implementation, as they did for e.g. their FORTRAN(E) and PL/I(F) compilers?

8 years, 10 months

Extra copy of DOS Programmer's Handbook available

by jnc＠mercury.lcs.mit.edu

I have an extra copy of: DEC-11-SERA-D Disk Operating System Monitor Programmer's Handbook, February 1971 if anyone has a use for it. Noel

8 years, 10 months

Harry Huskey, Bob Taylor -- sad news

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow > Harry did an oral history at CHM There are also a pair at the Smithsonian: http://amhistory.si.edu/archives/AC0196_husk730419.pdf http://amhistory.si.edu/archives/AC0196_husk720309.pdf and the CBI did one too, but alas it does not seem to be on-line (it's not in their OH index, and although Google searches for other ones from there turned them up, not this one): Harry D. Huskey, OH-83 Interviewer: Christopher Evans Date of interview: 1976 Anyone have a pointer to it? Noel

8 years, 10 months

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