test-drb

test-drb@ccmp.vtda.org

101090 discussions

by dj.taylor4＠comcast.net

I've been compiling and running some Fortran programs on my microPDP11/53 computer and have questions about Fortran VIRTUAL arrays. Details: KDJ11-D/S cpu with 0.5 MB of ram, additional 1MB of Qbus ram.? I'm running RT11 V5.7 ZM and using the F77XM compiler, version 5 (I think). What I am seeing is that when I use VIRTUAL arrays instead of the usual memory below 64K the run times are dramatically slower.? Is this normal? Could it be something else?? The other memory board?

7 years, 3 months

Televideo 925 character rom dump

by derschjo＠gmail.com

Hi all -- I'm working on a Televideo 925 terminal with a few problems, one of which is a bad character generator ROM, (a MOS 2332). Does anyone have a dump of this already, or have a working 925 they'd be able to dump the ROM from? Thanks in advance, Josh

7 years, 3 months

Need part for Sun 2/129

by earl＠baugh.org

I?m in the process of restoring a Sun 2/120 and realized that the unit I have doesn?t have the back plate and cables for monitor and keyboard/mouse. I have spare parts to trade for 2/120 ( including a sun 2/120 keyboard cable I found today. ) or can do $$ Earl Sent from my iPhone Sent from my iPhone

7 years, 3 months

Telex 20 Meg 10 platter very heavy monster drive needed drop line off list..r

by couryhouse＠aol.com

Thanks? Al? ?yes, that? is? the? one. and? as? I? recall? ?ISS? was a? ?offshoot? on? ?univac Do? ?you? have? any? Thanks Ed# In a message dated 4/22/2019 11:34:58 AM US Mountain Standard Time, cctalk at classiccmp.org writes: Thanks? Al? ?yes, that? is? the? one. and? as? I? recall? ?ISS? was a? ?offshoot? on? ?univac?In a message dated 4/22/2019 11:21:50 AM US Mountain Standard Time, cctalk at classiccmp.org writes: On 4/22/19 11:05 AM, ED SHARPE wrote:> Al,? the? drive? ?you mention at? its? largest? ?was? 7.5 meg? and? 6? platters... not? ? the? ?one Telex bought their drives from ISS.You're looking for a ISS 714 (ca. 1970) 2314 compat.https://ia800608.us.archive.org/15/items/TNM_Information_Storage_Sys… aek at bitsavers.org;cctalk

7 years, 3 months

Telex 20 Meg 10 platter very heavy monster drive needed drop line off list..r

by couryhouse＠aol.com

Thanks? Al? ?yes, that? is? the? one.? and? as? I? recall? ?ISS? was a? ?offshoot? on? ?univac?In a message dated 4/22/2019 11:21:50 AM US Mountain Standard Time, cctalk at classiccmp.org writes: On 4/22/19 11:05 AM, ED SHARPE wrote: > Al,? the? drive? ?you mention at? its? largest? ?was? 7.5 meg? and? 6? platters... not? ? the? ?one Telex bought their drives from ISS. You're looking for a ISS 714 (ca. 1970) 2314 compat. https://ia800608.us.archive.org/15/items/TNM_Information_Storage_Systems_-_… aek at bitsavers.org;cctalk

7 years, 3 months

IBM 6360 - interface help?

by anders.k.nelson＠gmail.com

CCing the list back in, and still looking for someone in the NY area with a Displaywriter (with disk drive) that could help me take some logic traces - ==== Quoth Nigel: just in case you missed it your reply only went to me. On Mon, Apr 22, 2019 at 1:45 PM Anders Nelson <anders.k.nelson at gmail.com> wrote: > Nigel - Wow, very cool! I assume you dumped a ROM feeding an 8048 inside the 6360 drive housing? Someone dumped the original ROM, it is in the github repo too. > FWIW, I also found a Displaywriter withOUT keyboard or disk drive: https://www.ebay.com/itm/Vintage-1984-IBM-6580-Display-Station-Word-Process… If you want a 6580 keyboard you either have to get lucky or outbid the mech-heads...be prepared to bid a lot though. Estate sales are the thing to haunt to get one intact. ==== Thanks Nigel, more below! -- Anders Nelson +1 (517) 775-6129 www.erogear.com On Sun, Apr 21, 2019 at 11:45 PM Anders Nelson <anders.k.nelson at gmail.com> wrote: > Nigel - Wow, very cool! I assume you dumped a ROM feeding an 8048 inside > the 6360 drive housing? > > I agree a logic dump would be invaluable so if I can get in front of a DW > I'll capture and share all I find on my blog (and wherever else). > > Al - I found a USB conversion kit for this keyboard and it's all > open-source, so by reversing the key-matrix decode step in the kit's MCU > firmware we might be able to feed the original keyboard controller with > keystrokes from, say, another USB keyboard. A very roundabout hack but it > seems these keyboards are rare. Here are the conversion kit sources: > > Forum: https://geekhack.org/index.php?topic=58138.0 > Direct: http://downloads.cornall.co/ibm-capsense-usb/ > > Any chance someone knows the original keyboard controller pinout and > protocol? > > FWIW, I also found a Displaywriter withOUT keyboard or disk drive: > https://www.ebay.com/itm/Vintage-1984-IBM-6580-Display-Station-Word-Process… > > =] > -- > Anders Nelson > > +1 (517) 775-6129 > > www.erogear.com > > > On Sun, Apr 21, 2019 at 11:12 PM Nigel Williams < > nw at retrocomputingtasmania.com> wrote: > >> Hi Anders, >> >> good luck with your exploration of the 6360. >> >> Back in Jan-2017, I assisted Sergey who did the MAME implementation of >> the Displaywriter, as Al Kossow mentioned in an earlier email the code >> is here: >> >> >> https://github.com/mamedev/mame/blob/97b67170277437131adf6ed4d60139c172529e… >> >> During this process I started disassembling the 6360, attached is a >> file that I developed with comments. It is incomplete but might help >> understand the protocol. >> >> One thing to keep in mind is that the Displaywriter is made up of >> (almost) standalone subsystems, so the floppy drive unit has its own >> 8048 microprocessor and accepts high-level commands from the system >> unit. >> >> Sergey and I were chatting about returning to work on the MAME >> Displaywriter implementation at some point. We really need a >> logic-analyser dump of the startup since it is very convoluted (it has >> a large section of code attempting to check that all the hardware is >> working so it is doing all manner of tricks to check things). >> >> cheers, >> nigel. >> www.retroComputingTasmania.com >> >> >> On Mon, Apr 1, 2019 at 6:42 AM Anders Nelson via cctalk >> <cctalk at classiccmp.org> wrote: >> > Can anyone help with the protocol? >> >

7 years, 3 months

Telex 274-61C Establishment Controller

by aek＠bitsavers.org

Picked one up, it is the last generation of 3274-style controllers before they went to 3174-style ca. 1988. I'd like to find manuals and the IPL diskette (1.2mb). The unit actually had an IPL floppy, but it disintegrated trying to recover it (there is signs of rust inside the hardware so the whole thing got wet). I took some pics of the boards (each one has a 68000 on it, only one board has eproms) and dumped the firmware which is up now under telex on bitsavers. Curiously, the floppy appears to be in FILES-11 format..

7 years, 3 months

Ultrix 3.0 VAX

by dennis.grevenstein＠gmail.com

Hi, I am looking for images of Ultrix 3.0 installation tapes for VAX. I know that there are some on bitsavers: http://bitsavers.informatik.uni-stuttgart.de/bits/DEC/vax/ultrix/3.0/ However, I cannot boot them in simh. There are also 4.0 images that boot fine. I then installed 4.0 and looked at the 3.0 tape images. I could extract the base 3.0 filesets, but the standalone parts that allow booting a system appear to be missing. Thus, I could not even setup a remote installation environment. Can anybody help me out with bootable Ultrix 3 tape images? thanks, Dennis

7 years, 3 months

TeleVideo MmmOST replacement

by pat＠vax11.net

I've finally have cleaned up sources and wrote up some documentation for my TeleVideo MmmOST replacement. Let me know if you have interest in this, need help, or could help me source a working TS-806 to compare this against. https://worldofvax.blogspot.com/2019/04/televideo-systems-part-vii-almmmost… Pat

7 years, 3 months

Telex 20 Meg 10 platter very heavy monster drive needed drop line off list..r

by couryhouse＠aol.com

Telex 20 Meg 10 platter ?very heavy monster drive needed drop line off list thanks Ed# ---hope this works and see ds from phone ok... thx try it? again!In a message dated 4/21/2019 3:58:15 PM US Mountain Standard Time, cctalk at classiccmp.org writes: Telex 20 Meg 10 platter ?very heavy monster drive needed drop line off list thanks Ed# ---hope this works and see ds from phone ok... thx

7 years, 3 months

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