View Profile: m_thompson - Vintage Computer Forum

Yesterday, 01:27 PM

m_thompson replied to a thread Transfer files from a REAL PDP8E and SIMh in DEC

I use the serialdisk image in SIMH as the second RK05 and boot from an RK05 image that works under SIMH. That way I don't have to worry about the...

33 replies | 515 view(s)

Yesterday, 09:05 AM

m_thompson replied to a thread Transfer files from a REAL PDP8E and SIMh in DEC

I use serialdisk to copy files from the RK05 on my 8/e to/from a disk image on my desktop machine. Then I can use the disk image with SIMH.

33 replies | 515 view(s)

February 18th, 2020, 05:03 AM

MattisLind replied to a thread Looking for PDP-11/05 CPU card M7261 in DEC

The 11/05 is quite easy to diagnose. You would probably need extender boards to do that. If bit 0 is missing all the time you should be able to trace...

6 replies | 146 view(s)

February 17th, 2020, 04:55 PM

jackrubin replied to a thread Transfer files from a REAL PDP8E and SIMh in DEC

Take a peek here: http://avitech.com.au/?page_id=2514 . You may need to do a little preparatory fiddling - I did this a few years back (and, I think,...

33 replies | 515 view(s)

February 8th, 2020, 07:30 AM

m_thompson replied to a thread Seeking Altair 8800 Front Panel Decal / Logo in S-100

The RICM also needs a Front Panel Decal for their recently acquired Altair 8800.

3 replies | 146 view(s)

February 6th, 2020, 04:42 AM

m_thompson replied to a thread Sun 3 memory/ecc errors in Unix/Xenix/Linux Workstations

Stuck data bit on the CPU or the memory board.

1 replies | 72 view(s)

February 3rd, 2020, 01:28 PM

m_thompson replied to a thread The RICM Just Received a MITS Altair 8800 Donation in S-100

We have the TTY working, including the paper tape reader control. We put a 10-pin Molex with the DEC VT220 pinout on everything that supports 20mA...

10 replies | 812 view(s)

February 3rd, 2020, 04:44 AM

m_thompson replied to a thread IBM ES/9000 TCM - Monster Ceramic CPU in Minis and Mainframes

The RICM had a cutaway module just like the one in your video. I should take some better pictures of it. ...

2 replies | 229 view(s)

January 31st, 2020, 12:38 AM

MattisLind replied to a thread VT52 vs VT100: differences? in DEC

Indeed much simpler. The VT100 is implemented using an 8080 CPU and several custom LSI IC to do plenty of the video processing. The VT52 is almost...

31 replies | 1102 view(s)

January 30th, 2020, 04:38 AM

m_thompson replied to a thread A new G888 manchester read/write module in DEC

Only if the Mark Track is in an standard format.

63 replies | 5792 view(s)

January 29th, 2020, 06:54 AM

MattisLind replied to a thread A new G888 manchester read/write module in DEC

Well it does a bit since it has a couple of mono stables that filters out spurious pulses. That part (except for using counters instead of...

63 replies | 5792 view(s)

January 29th, 2020, 04:43 AM

jackrubin replied to a thread New Version of RLV12 Emulator in DEC

Thanks for the signature. Nice stuff - almost makes me wish I could count to 16!

16 replies | 1417 view(s)

January 29th, 2020, 04:35 AM

m_thompson replied to a thread A new G888 manchester read/write module in DEC

And that it what makes it really useful. Reading and writing DECtapes that didn't come from a PDP-8 is easy.

63 replies | 5792 view(s)

January 28th, 2020, 04:21 PM

jackrubin replied to a thread New Version of RLV12 Emulator in DEC

Hi Peter, Please provide a pointer to _your_ download site. Maybe add it to your signature for us old folks who can't remember much? Thanks!

16 replies | 1417 view(s)

January 28th, 2020, 12:16 PM

MattisLind replied to a thread IBM 3276 Terminal in General Vintage Computer Discussions

It look like 3276 is something like a 3277 with integrated 3274, right? Then it either talks BSC or SDLC. I have been looking into BSC a bit and...

6 replies | 249 view(s)

January 27th, 2020, 07:12 AM

MattisLind replied to a thread A new G888 manchester read/write module in DEC

Electrical and physical to ease interconnecting both TU55 and TU56 to a TD8E. The TU55 have the G888 or G882 in the controller while the TU56 can...

63 replies | 5792 view(s)

January 25th, 2020, 09:37 AM

m_thompson replied to a thread A new G888 manchester read/write module in DEC

What about your USB interface...

63 replies | 5792 view(s)

January 25th, 2020, 06:36 AM

m_thompson replied to a thread A new G888 manchester read/write module in DEC

Very cool!

63 replies | 5792 view(s)

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