gossamer axe wrote:
I believe IRQ 1 and 2 are reserved, so 3 & 4 were
and easy way to remember it. 9 was usually open, and I seem to remember 7
also, but again, I am probably wrong about that. It's been a while since
fiddling with IRQs.
IRQ 1 is the keyboard, and IRQ2 is the cascade interrupt for IRQ 8-15.
7 was usually the parallel port, but obviously it was available if you
didn't have a printer hooked to the BBS. heh.
I've never met anyone that had a plausible explanation as to why Com2 is
on IRQ3 and Com1 is on IRQ4.
Seems like something wikipedia should know, but I just looked and didn't
see anything.
Number 3 no clue, maybe command.com config.sys and autoexec.bat? I thought
command.com HAD to be on a floppy to get to a DOS shell...but I'm
frequently
wrong...
IO.SYS, MSDOS.SYS and COMMAND.COM will get you a DOS shell.
but number 4 is easy!
Format C and install Linux and while you're at it, format the other
machines and install Linux too! </joke>
heh, but what if there is no driver for the NIC?
-ajb
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