test-drb

test-drb@ccmp.vtda.org

101090 discussions

by derschjo＠gmail.com

So I know for certain that this topic has come up before, but I cannot for the life of me find the thread(s) it appeared in, so I'm asking again (apologies in advance). What is the name of the rounded, 3-pin power connector often seen on early test equipment (I've seen it on older HP and Fluke stuff)? I have an S-100 chassis that inexplicably uses one, despite dating from 1982 or so. I need to track one of these cables down but I have no idea what it is exactly I'm looking for... Thanks as always, Josh

10 years, 1 month

Some questions about the MC6839

by spc＠conman.org

So Motorola apparently never produced the MC6839, a ROM containing position independent 6809 code for implementing (as far as I can see) IEEE 754 Draft 8. Motorola *did* however, release the resulting binary into (from what I understand) the Public Domain [1] but I've yet to find the actual source code, which would solve my current problem. I'm playing around with the code in an MC6809 emulator [2] and trying to use it (getting my retro-software fix in as it were). It works---not as accurate as today's stuff, but close enough and it supports single and double precision. The current issue I have is with the FMOV opcode (register entry) described as: ------------------------------------------------------------------------------ |Function|Opcode| Register entry conditions | Stack entry conditions ------------------------------------------------------------------------------ | FMOV | $1A | U = precision parameter word| push arg | | | Y -> argument | push precision param word | | | D -> fpcb | push ptr to fpcb | | | X -> result | call FPO9 | | | | pull result ------------------------------------------------------------------------------ For moves, U contains a parameter word describing the size of the source and destination arguments. The bits are as follows, where the size is as defined in the fpcb control byte Bits 0-2 : Destination size Bits 3-7 : unused Bits 8-10 : Source size Bits 11-15: unused It's not clear if U should contain the actual parameter value, or a pointer to the parameter value. It just doesn't seem to work no matter how I code it. Anyone have any clue? -spc (I'm at a loss here ... ) [1] Available in the file fpo9.lzh here https://ftplike.com/browser/os9archive.rtsi.com/OS9/OS9_6X09/PROG/ [2] I wrote one: https://github.com/spc476/mc6809 Not much documentation I'm afraid.

10 years, 1 month

PDP11GUI under Wine on Linux -- extra backslash?

by fritzm＠fritzm.org

So, I am trying to run PDP11GUI under Wine on Linux, and I am having problems loading a machine description file. It seems when PDP11GUI tries to kick off M4, it is expanding an extra backslash into the command. So you get this sort of error message (note extra backslash before m4.bat): Can't recognize 'C:\Program Files (x86)\Joerg Hoppe\PDP11GUI\\m4.bat" "C:\users\Public\Application Data\PDP11GUI\machines\pdp11.ini" "C:\users\fritzm\Temp\tmp_pdp11gui_m4_out.ini' as an internal or external command, or batch script. I've verified that I can run m4.bat sucessfully manually if I set the appropriate env vars first. But this doesn't help because it seems like PDP11GUI deletes the file and then (fails to) regenerate it on each run :-( Anybody else run in to this or have a suggestion for a workaround? thanks much! --FritzM.

10 years, 1 month

More things that we are considering offloading.

by mattislind＠gmail.com

DECprinter I, GE TermiNET30, C Itoh CIT-101e, PDP-11 manuals, PDP-8 diagnostic duplicates, TI SilentWriters etc etc. http://www.datormuseum.se/available /Mattis

10 years, 1 month

More things that we are considering offloading.

by COURYHOUSE＠aol.com

if it was close I would jump on that terminet 30! Ed# In a message dated 6/27/2016 1:38:34 P.M. US Mountain Standard Time, mattislind at gmail.com writes: 2016-06-27 21:41 GMT+02:00 Ian S. King <isking at uw.edu>: > So far away.... <sigh> (Pacific Northwest, United States) > That is right. Forgot to mention that everything is outside Str?ngn?s in Sweden. /Mattis > > On Mon, Jun 27, 2016 at 12:20 PM, Mattis Lind <mattislind at gmail.com> > wrote: > > > DECprinter I, GE TermiNET30, C Itoh CIT-101e, PDP-11 manuals, PDP-8 > > diagnostic duplicates, TI SilentWriters etc etc. > > > > http://www.datormuseum.se/available > > > > /Mattis > > > > > > -- > Ian S. King, MSIS, MSCS, Ph.D. Candidate > The Information School <http://ischool.uw.edu> > Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical > Narrative Through a Design Lens > > Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> > Value Sensitive Design Research Lab <http://vsdesign.org> > > University of Washington > > There is an old Vulcan saying: "Only Nixon could go to China." >

10 years, 1 month

wanted: TI Silent 700 Model 763 & 765 Maintenance Manual

by spacewar＠gmail.com

Does anyone have that? The manual for Model 743 & 745 is on Bitsavers, but I'm specifically looking for model 763 & 765.

10 years, 1 month

CiTOH terminals (was Re: old friend is slimming down the warehouse)

by ethan.dicks＠gmail.com

On Fri, Jun 24, 2016 at 11:06 PM, Pete Lancashire <pete at petelancashire.com> wrote: > Rather have a C Itoh CT-101e .. I can probably help with that. I'm in Ohio and I get out to Chicago and NJ a couple of times a year. I have a cabinet of CiTOH terminals I bought from my employer "some years ago". ;-) We used an assortment of DEC VT10x, VT220, CiTOH 101 and CiTOH 101e terminals. ISTR the CiTOHs were as much as $800 cheaper than DEC terminals at the time. They were robust and at one point, I pulled out of the manuals the magic escape sequence to "switch sessions" and use the local printer port as a second comms line (we just had to bang out a custom DB25 adapter since the entire company was standardized on Nevada Western 6p6c modular serial and we didn't have a box of the right adapters for the printer port). It was awesome having two live lines in front of our usual switchbox setup for connecting to multiple hosts. > ... knew one of the developers Neat! > F/W was done in the US I can no longer remember the key combination but the > terminal would let you know who did it That would be fun to look up. > Anyone wants to gain a cubic foot or two let me know You got it! -ethan

10 years, 1 month

pdp 11?

by jnc＠mercury.lcs.mit.edu

> From: Adrian Stoness > friend found this now opening channels to rescue it > its an 11 of some sort not sure witch one ??? Both URL's are the same picture - an envelope on the floor? Noel

10 years, 1 month

pdp 11?

by jnc＠mercury.lcs.mit.edu

> From: Adrian Stoness >> its an 11 of some sort not sure witch one Ah, OK. That's either an -11/04 or -11/34 in the top left corner, with either an RX01 or RX02 above it. (Not enought detail in the image to say.) The rest of it seems to all be some sort of custom medical or other specialized hardware. (The /04 and /34 are very similar - the only difference is which processor card(s) is/are plugged in - you can convert most -11/04's [it depends on the specific backplane in use] to -11/34's by pulling the M7263 KD11-D -11/04 processor card, and plugging in instead the M8265 & M8266 KD11-EA -11/34A processor cards, which still seem to be relatively prevalent.) Noel

10 years, 1 month

"Key" to open an HP 264X terminal

by curiousmarc3＠gmail.com

Questions for our HP specialists. I can't open the case of the HP 264x terminals I just got. I see from the manual there is a small slot on the side in which you have to insert a "key". Is the key just a small blade tool or does it have to be more special shape than that? Marc

10 years, 1 month

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