The 8259 interrupt controller (HELP!)
William E. Davidsen Jr
davidsen at steinmetz.ge.com
Fri May 20 00:17:59 AEST 1988
I don't have the info right here, but I did this, here's where to find
out how.
IBM AT tech ref (or XT):
section on the serial interface:
tells how to set the USART
section on the motherboard:
how to program the 8259 (just clear a bit in the imask,
DON'T lose the values of the other bits)
There's a 1 bit output to enable serial ints on the MB
Intel 8259 spec sheet:
How to use the beast, don't forget EOI, don't change
the rest of the settings or DOS won't work
--
bill davidsen (wedu at ge-crd.arpa)
{uunet | philabs | seismo}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me
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