[comp.lang.pascal] TP and assembly language interrupt handlers

jdobbs@mwunix.mitre.org (John Dobbs) (07/11/90)

I have written an assembly language routine that replaces the BIOS int14
async routines with an interrupt driven routine and then loads and executes
a designated program using DOS int21h function 4bh.  I have been able to
successfully access the async routines via int14 from other loaded 
assembly language routines but when I attempted this using a TP 
(version 3.0) routine, I seem to be no longer servicing async 
interrupts.  Could someone tell me if TP initializes the async port or
reinitializes interrupt vectors or some other process such that would 
disturb interrupt processing.  Thanks in advance.

John D. Dobbs