these were on the book cd under /ACK/DOS/BORLAND. this version of
ackiff.c is SIGNIFICANTLY faster then the windows one ported back to dos
(i don't think i did anything wrong when i did that, but who knows...)
despite the book itself stating that this code was not included due
to the old GIF patent back in the 90's, it was actually included on the
cd under /ACK/DOS/WATCOM/ACK_LIB. oops!
with the timer speedup call left in, it feels much closer (speed-wise)
to the original watcom fdemo executable from the book cd. but still not
quite a perfect match in my opinion
i didn't recognize _getds from anywhere so assumed it was something
commented out for a reason, but turns out that it was part of the
original modplayer code (which was originally written for watcom
anyway). _getds is an internal function from the watcom standard
libraries.
i'm convinced that the modplayer doesn't work as-is. start/stop of bg
music was commented out in the newer borland sources, and neither the
borland 'nor watcom fdemo executable on the book's cd ever played
bg music for me. enabling it (with the mod file present) causes some
crashes.
borland conditionals have been removed. asm sources converted fully
to tasm ideal mode. keyboard and timer interrupt handlers moved to c
code copied from fdemo watcom sources
sources taken from book CD:
ack_lib -> /ACK/WIN/ACK_LIB
fdemo -> /ACK/DOS/FDEMO/SOURCE (and /ACK/DOS/BORLAND as needed)
mall -> /ACK/DOS/MALL/SOURCE (and /ACK/DOS/BORLAND as needed)
some source files were missing for the demo projects and needed to be
copied from /ACK/DOS/BORLAND (as indicated above)
Gered