You know, reading about this made me dig out the info I had on the Character Oriented Windows ("COW") library. I was reading some of the docs and it occurred to me that it operated much like Windows (probably Windows 1), but what I couldn't find were any "sample" programs or tools to build a program based on the COW library. Does anyone have/know of a sample program that used the library? Was there an SDK for it or was it used only for Microsoft's products?
Just looking for something new/interesting to learn about. Thanks!
Rich
?On 5/22/20, 11:35 AM, "cctalk on behalf of Chuck Guzis via cctalk" <cctalk-bounces at classiccmp.org on behalf of cctalk at classiccmp.org> wrote:
A quick look at the code indicates to me that the Intel translator
CONV86 may well have done the translation in "strict" mode. Of course,
there were other translators, but some of the stuff rings a bell.
For example, the 8080 instruction
INX B
gets translated to
SAHF
INC BX
LAHF
all done because the 8080 16-bit instruction does not affect the zero
and carry flags, but the 8086 instruction INC, does. So there's very
likely a large amount (my experience was at least >30%) of cruft in the
code.
--Chuck
I assume this are not the standard Intel floppy drives????
On Sunday, May 31, 2020 Jan-Benedict Glaw via cctech <jbglaw at lug-owl.de; cctech at classiccmp.org> wrote:
Hi!
I just wanted to drop an email that there's a MDS 80 on eBay:
??? https://www.ebay.de/itm/333612000595
(Please note: The seller, Michael, is a friend of mine, and a former
coworker.)
Thanks,
? Jan-Benedict
--
Today I was working on a new-to-me VT240 which hadn't been powered up in
a long time (possibly 10 years). Hooked it up to an old 9" B&W CCTV
monitor and everything was running fine for 20 minutes or so - when
suddenly an astonishing amount of acrid whitish-gray smoke started
pouring from the vents =8^ O
So I yanked the power cord out and took the case off. Sure enough, one
if not both of the 0.1 uF X-caps on the line filter had cracked open and
my nose confirmed that was the source of the stench.
Fortunately there is no damage to the PC board or surrounding components
- even the caps don't look toasted, just split. Good thing I was sitting
right there when they failed and could turn the power off immediately.
I've read here and elsewhere about the spectacular failure modes of
these caps, sometimes flames, but this is the first time I ever
experienced it first hand. Maybe it's time for a look inside my VT220? ;)
-Charles
Hi, I've recently come across a CPU chip marked "AlphaMicro" . It has a
date stamp of 8531 and appears to be of the 386 variety (1 5/8 x 1 5/8). It
doesn't appear to be from Alpha MicroSystems. Anyone know who may be the
maker of this chip? I can send a picture for those who'd like to see what
it looks like.
Hi!
I just wanted to drop an email that there's a MDS 80 on eBay:
https://www.ebay.de/itm/333612000595
(Please note: The seller, Michael, is a friend of mine, and a former
coworker.)
Thanks,
Jan-Benedict
--
Working on restoring this 11/83, I would like to replace the Fujitsu
2284E drive with a slightly larger capacity CDC/Imprimis WREN VI
94246-383 ESDI. I think I have the jumper configurations, however the
problem is the disk does not have a terminator pack.
Does anyone know what kind of resistor pack was used for the CDC drives?
It's probably something very basic and easy to find at Digikey but what?
Thanks!
Chris
(working away here)
Title says all,
Backing up all the programmable parts in the Apollo DN100 and the CPU board
has a few of these ceramic DIPs with the same Apollo P/N labels as the
Am27S29 and similar programmable parts.
Thanks
