From: Ed Beroset 
Subject: Re: pure Hex Programming
At 16:40 1/4/98, you wrote:
>SM> SM> Of course, I could just ASSUME a PC-compatible board, and disable
NMI.
>
>SM> GM> You can't disable the NMI. It's hardwired to the parity
>SM> GM> check. The port to disable the parity on motherboards vary
>
>Like I said, the NMI should never activate....
FYI, there is a way to disable NMI on many motherboards.  Writing to port
0x70 (which is one of the ports used to access CMOS RAM) with the high bit
set causes NMI to be disabled on most modern motherboards.  This standard
was set by IBM in the PS/2 series and was adopted by many other
manufacturers.  Unfortunately, other good ideas from IBM, like the watchdog
timer, did not catch on.
Ed
-!-
---
---------------