DOS4GW = DOS 4GB extender for Watcom
. It was a hugely popular DOS
-extender that allowed 32 bit code
and large segment
s on DOS. Actually, it was an crippled version of the full DOS4G (high-IRQ's were disabled)
. Thanks to that, soundcard
s with IRQ
's over 7 never worked with DOOM
. Anyways, this piece of shit
ty coding was distributed with Watcom C/C++ 10/11.
There's a freeware replacement called PMODE/W that actually works and is a lot smaller.