22 Apr
2007
22 Apr
'07
9:48 p.m.
--- Fred Cisin <cisin at xenosoft.com> wrote:
On Sun, 22 Apr 2007, Chuck Guzis wrote:
It was really just a question. No, probably not worth
the effort. Some time ago I was in contact with a
developer type dude who had been working on a
software/hardware thing that he claimed would make the
T2K totally IBM compatible. I posted it here to the
group, but no one bit :(. If I can dig it out, I'll
post it again :).
It involved spying on, uh, I don't remember, but
something not too different from what Bunnie Huang
described in "Hacking the X-box" from what I recall.
Involved some relatively simple hardware mod, but a
fair amount of software mods. Ahem altered the bios
code. How did he expect to pull that off legally???
I asked him if it would be easier to graft a vga card
onto a T2K somehow, and alleviate alot of the
incompatiblity. He said no, but I think he was wrong!
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Like what? CGA graphics starts at C800:0. The
first thing that I'd
do is search the executable for 00 C8 and see
what
referenced it. Be
aware that many early PC games used some pretty
involved copy
protection, which might get in the way of
brute-force hacking.
Otherwise, I'd just set up a TSR to examine
some
conventional DRAM at
C800 and update the 2000 display accordingly.
You
might even
fabricate a card that interrupts after an access
to the screen
buffer, latching the address and data.
I think that you'd want to map your graphics
emulator from B800.
Save C800 for hard disk emulators.
Writing PC emulators for incompatibles is certainly
possible, but,
is it worth the effort.