ARPA@ihlpf.UUCP (11/29/83)
#R:sri-arpa:-1399000:ihlpf:17100023:000:791
ihlpf!dap1 Nov 28 16:47:00 1983
There is a register in the INTEL timing chip which is decremented every clock
cycle (I think) and when it reaches zero it generates an interrupt and wraps
around. This register is loaded with 65535 resulting in the 18.2 ints/sec
that are generated. You can reload this register with a smaller number to
get shorter interrupts but you're clock will start running fast and you might
have some problems with the disk timing, but I don't think so. This could
probably be compensated for by rewriting the clock interrupt, but that starts
getting a little dangerous. I'm not sure of the procedure but all the info
you need is in the standard INTEL manuals.
Darrell Plank
BTL-IH