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