Can anyone point me to a technical manual for the DataMedia Elite 2500A
terminal? I'm especially interested in documentation on the escape
sequences and the special character sets. This was a fairly high end smart
terminal from the late 70s or early 80s.
Bitsavers has a short manual for the 1500 which I'm guessing to be
similar, but the 2500 has some extra features (e.g. insert line/character,
delete line/character, etc) that aren't present there.
> From: Dominique Carlier
> I just regret this incredible rise in prices for collector machines
> that, not so long ago, were languishing in wet sheds
Hey, look at the bright side: as a result, they are much less likely to be
simply recycled as scrap.
I took great pleasure in telling one seller who'd pulled a board-set,
and recycled the rest, that the part he'd recycled was worth a lot more
than the part he'd saved. Hopefully that kind of news gets around.
I received an email from plebourgeois at me.com who said he's in
Mandeville, Lousiana and has an Osborne available with
accessories/manauls to a good home for the cost of shipping. He said
he'll throw it away if he does not find a home for it soon.
That's all I know, do not reply to me or this list, send the guy an
Evan Koblentz, director
Vintage Computer Federation
a 501(c)3 educational non-profit
evan at vcfed.org
> From: Henk Gooijen
> My findings so far :
> Comments are very welcome!
I got a:
You don't have permission to access to this document on this server.
Apache Server at pdp-11.nl
> I vaguely remember that there was a difference in the front console For
> the BA11-K and the BA11-F configuration. ... the two ribbon cables from
> the front panel are at the right side for a BA11-K box, and on the left
> side for the BA11-F box. Given the location of the CPU boards in both
> boxes, that makes sense.
They didn't do two different console PCBs, did they? It must be just cabling
routing? I couldn't find any manual/drawings for the BA11-K version, so I
can't tell for sure..
> From: Jon Elson
> I'd get an FPGA development board and download Xilinx's webpack
> software. It would not take real long to design the basic microcode
> engine, and then you could develop some application microcode in
> parallel with the hardware
That approach worked really well for Dave B and I on the QSIC. IIRC, we
bounced around the uengine design concepts for a couple of days, and then
once we decided to go, he had the hardware working in a day or so. It's in
Verilog, so perfect for an FPGA devel board; I think it's in his Github
If you go this route, I have that config-file driven uassembler written in
portable C (compiles on 3 different systems that I know of) which uses only
standard I/O library which you can use for the ucode; it should handle most
any uengine design, unless it has something really wierd.
> From: Kyle Owen
> I do have an 11/45, though... so with this modification, I suppose one
> could have some fun:
That's for the -11/40 - very different machine, one couldn't use the same
technique on the /45; the /40 is prepared to accept additional ucode on
additional CPU boards, that's how the EIA works:
And it's custom boards, the design for which is no longer extant (pity, as
I'd love to play with one myself).
Finally, I have this vague memory that they had to put a few minor mods on
some of the existing CPU boards (details also lost), although my memory may
be misleading me on that.
> From: Kyle Owen
> So the same technique would work on the 11/35, then?
Yes, the /35 and /40 are completely identical, except for the number
painted on the inlay on the front console.
(Well, the /35 was often sold in a BA11-K box, and the /40 in a BA11-F, but
that's just physical configuration, and is just a 'usually' - there are
/35's in BA11-F's [for sure], and probably /40's in BA11-K's.)
I?m looking for a circa 1974 copy of RSX-11D distribution and the COBOL compiler that was shipped as an add-on product.
I?ve looked through trailing-edge but maybe I am missing the obvious, anyone have any ideas or has a copy?