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-boun...@classiccmp.org on behalf of cctalk@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
