[net.micro.pc] DOS Calls from Interrupt Routine Que

seaburg@uiucdcs.UUCP (08/25/84)

#R:sri-arpa:-1242700:uiucdcs:24700057:000:295
uiucdcs!seaburg    Aug 25 10:57:00 1984

The DOS calling within DOS screws up because of stack overflows.  If I
remember correctly, you can do disk I/O type stuff while in DOS
character I/O space and vice-versa.  You can't do char I/O while in
DOS char I/O and same for disk I/O.

Hope this helps.

Gunnar Seaburg
(supplemental IBMer)