> From: Mattis Lind
> Thanks Noel for sorting this out.
Eh, de nada. But thank you.
>> I wonder if the ucode in the two versions is identical? The uROM chip
>> numbers should give it, (if they are the same on both versions, albeit
>> in different locations on the board), but I have yet to check. Does
>> anyone happen to know?
OK, so the situation here is pretty complicated. To start with / make things
worse, that CPU uses lots of PROMs. Lots and lots and lots and lots of PROMs.
For the data paths board (M7260), both major versions appear to contain the
same PROMs (going by the DEC part numbers), but the chip location (Exx)
numbers are all different.
For the control board (M7261), the C, E ('early' version) and F ('late'
version) etch revisions each contain mostly the same PROMs, but apparently
with slight differences between the sets of PROMs in each (as reflected in
different DEC part numbers). For details see:
to which I have just added all the gory details.
As to getting the contents of all of them dumped in machine-readable form -
>> on the earlier version (prints for that version are in the GT40 prints
It turns out that I have hard-copy prints for the "C" etch revision of the
M7261, which do not yet appear to be online; the GT40 prints have the "E"
I will scan the pages for that revision of the board, and put them up 'soon'.
(I'm not doing the whole print set, it's about 1" thick, and most of them are
for other things anyway, like MM11-L memory, etc.)
> From: Toby Thain
> To get closer I'd need better images of the panels.
Hi, I borrowed a DEC inlay from someone (a KA10 CPU bay) and scanned a chunk
of it (as much as I could fit into my A4 scanner :-) at 200 dpi:
I have a TC08 inlay, but it's currently being used in my QSIC display (until
we can get the RKV11-F/RPV11-D inlay done :-), and I didn't want to yank it
out. As far as I can tell, it's the same font on the two of them.
> the closest I know of off the top of my head is Akzidenz Grotesk.
The Akzidenz Grotesk Medium is indeed very, very close (other than the zero).
Do you happen to know if that font available for use in non-commercial
Since a few days, my EXORciser Development System is finally able to boot from floppy diskettes.
Previous attempts have shown that the Motorola EXORciser M68SFDC1 floppy disk board used has a special modified ROM version. This was probably written for an 8-inch drive, in which the Write protect and Direction signal were inverted.
For the sake of simplicity, I have used free inverter on the board to invert the signals accordingly.
After adjusting the PLL frequency, reads and writes from the card are now error-free. And all without FDC, only clever programming by Motorola software engineers in the early 76?
Originally, the EXORdisk system was a dual drive with two 8 "units. This I have replaced with a double drive of two 5.25 inch units. An Epson and a TEAC, which can be jumpered to 360 rpm. Luckily, 2HD floppy disks are easy to R&W.
I also got a GOTEK floppy emulator running, which I can boot from. Thanks to Roland Huisman, Bitsaver has some interesting floppy disks that convert to HFE format work perfectly. This format makes the Gotek drive most reliable.
Now to my question. The vintage computer forum at http://www.vcfed.org/forum/archive/index.php/t-44638.html mentioned some interesting manuals. Archive.org has some manuals, Bitsaver does not have manuals about the M6800 development system.
If someone already owns scanned manuals to the following list
M6800 Basic Interpreter Reference Manual
M6800 Macro Assembler reference Manual
M68SFDU Exordisk 11/111 Disk `Drive Unit Maintenance Manual
M6800 Exorciser 11 User's Guide
M6800 Exorciser User's Guide
MEX68PP1 PROM Programmer Module Supplement M6800 Exorciser User's Guide
I would welcome any feedback or questions
The famous Brigham Young University 3D graphics program, by Dr. Hank Christensen.
I am looking for the fortran source, it should be 7 files:
Any docs related too.
Thanks for letting me beg.
The past few years I?ve become fairly focused on a particular old 1999/2000 ww2 fps computer game. Of course playing it but I?m also on the development team for the game (EA has given up on it, but we still put out new releases, maps, patches, etc.). As a result of that, I pretty much live on Discord text/audio chat these days. If you send me an email I will eventually see it and may even respond heh. But if you send me anything on Discord I?m going to see it immediately. If any of you are on discord, I am ?Todesengel#9624?. Feel free to add me as a friend and that way you can get me usually immediately. I am not leaving the hobby, nor am I saying not to email me at the usual address. But a lot of you do talk to me semi-frequently and I?m just saying discord will get to me far quicker.
In addition, mostly as an exercise to see how to do it, I set up a ClassicCMP discord server. That Discord server is NOT meant to replace this list, nor should it be taken to signal any less commitment on my part to keeping this list running. They are fundamentally different things; Discord is great for real time text chat back and forth. There are also audio and video channels if people want to use that to talk verbally or via video. To get on that server, here is a semi-permanent invite: https://discord.gg/U8Skw5g Joining the server gets you to all the other folks who may join the classiccmp discord, not just me. Of course, that could be zero ? Like I said, I just did it as an exercise, and discord is how some of my family and friends stay in touch. But it is there if peeps want to use it.
I?d rather not turn this into a long debate of whether discord is good or bad or anything like that. I?m just saying it?s there, and it?s quicker to get ahold of me that way at times.
I'm trying to find a way to get my DEC Rainbow's monochrome output onto a
newer monitor than my aging VR201 (especially since I zapped something in
it and my diagnostic efforts to date haven't fixed it).
So, I found the bit in the Rainbow docs that said the output was DC Coupled
RS-170 signals and to convert to RS-170 (NTSC black and white) I needed to
put a 10uF cap inline to make it RS-170. So I did this, and fed it into a
generic NTSC composite video to VGA thing, and got only a little joy. The
first few lines seem to be missing, then the next few are OK and then
I tried to google this, but found nothing. My google foo has failed me.
Does anybody else have a working setup?
Grumpy Ol' Fred cisin at xenosoft.com
*?More worrisome is that Murray is NOT A "NEWCOMER" who will be "scared off" *
*by corrections of his facts! This is not the first time that he has *
*needed to be admonished to be VERY specific about what was "FIRST" about *
*something. He wrote about the exact same event three weeks ago, on the *
*correct date, with much more accurate details, other than calling it "the *
*first inter-computer communication". Not sure where he got the November *
*21 date, nor the "SIXTY years ago" (probably a simple misteak)*
*He is quite capable of some fairly good writing. I don't remember any *
*prior time that he had to be reminded to "PICK A TOPIC!" rather than *
*string together eight unrelated concepts into four sentences.*
*On the other hand, if his confusion was recreational, that's OK, too.*
*Let's have a toast with him to the people who got the idea to work, *
*disunirregardless of who was "first".?*
Things we historians talk about are ?firsts? and ?facts?. If we go to
original source(s) maybe then we will get things right. I guess the best
that can be said is we agree to disagree. A sad commentary in this age of
what my ?facts? and your ?facts? are, are not the same but we historians
should do our best to state ?firsts? and ?facts? are indeed that to the
best of our knowledge. The 60 yrs. as noted was a math error and here I
spent years as a BASIC, C and C++ programmer as isn?t mathematics the basis
for all programming languages? Let's indeed toast to all micro-computing
progenitors for making our hobby possible.
I?ve been a hobbyist and experimenter since the 1970s though I worked on
mini-computers(PDP-8/11) in the 1960s. I got to work on them in high
school; I know we were rather privileged.
For microcomputers it began in April 1978 when I built the Heathkit
H8($2500 Cdn.) a computer based on the PDP-11 with 4K(B) of an 8K(B) card;
now $2500 will buy a truly powerful home computer with 16/32GB of memory.
My second, the Coleco ADAM, computer was Aug. 1984. A bit more powerful and
more useful to be sure. Finally in 1989 I moved into the IBM PC world ? the
Compaq Deskpro 386 which ran DOS, Lotus 1-2-3 and Windows 2 that could run
Word and Excel. Wow! Notebooks followed.
And now(well Aug. 2019 to be precise) I built my own custom Mini-ITX PC
>from parts sourced here and there for $750 Cdn. This makes me nostalgic for
the old days of computing we talk about on cctalk.
A collection just came to me. These are the original disks, with whatever labels are on them.
As a set. First come first served.
If you are in San Diego I?ll arrange a swap with you locally.
If remote, we can arrange shipping.
1.44MB unless otherwise noted.
Copyright years noted so version number might be determined along with what version of Mac it might support.
GRAVIS Mac Blackhawk Version 1.0 (2 disk)
ClarisWorks 4.0 (6 disks)
ClarisWorks Small Business Solutions Pack.
Correct Grammar For Mac Version 3.0 (2 disks)
APS PowerTools V 1.3.1
Mac ally Port Xpander Driver Program (copyright 1995-1997)
Welltris, Spectrum Holobyte (800K disks, S/N 013045, 2 disks)
MicroSoft Excel Version 4.0. (800K disks, 7 Disks, copyright 85-92)
MicroSoft PowerPoint (800K disks, 4 disks, copyright 87-89)
MicroSoft Mail Version 2.0 (800k?, Copyright 85-89)
Conflict Catcher 3 (800K 1 disk)
dantz Retrospect (2 disks, copyright 97)
Suitcase II, (400K disk, S/N 4200-0103685 Copyright 86)
Hayden Books - The Internet Starter Kit for Macintosh Disk. Contains:
Stuffit Expander 3.03
Nova Development - American Handbook of Business Letters (800k?, Copyright 90)
Aladdin Stuffit Lite (800k?, Copyright 87-92)
Aladdin Spring Cleaning (Copyright 96)
Connectix Ram Doubler (800k?, 1.5.1 hand written on disk, copyright 94)
CTSNET Macintosh Internet Signup
Since my Father in law as Mac Only, I had no idea where these came from
Windows Syquest SCSI installation Diskette 1, copyright 94
Windows 95 Syquest Installation diskette 2
DOS/Windows & OS/2 SCSI installation diskette 3