[comp.sys.ibm.pc] Microsoft MACH 20 info

davidg@uns-helios.nevada.edu (Davig Gonzales) (11/30/89)

----------------

Hi,
	At work I am trying to put a Microsoft MACH 20 (version 1.0) 286
board in a real IBM-PC/XT computer. I have followed the instructions for
installation but have been unable to boot this thing (the system just hangs).
I even tried using another IBM PC/XT but with the same results. Anyone messed
with one of these boards? If anyone can also give suggestions on 286 plug-in
cards for the PC it would be most helpful. Thanx.


David A. Gonzales

n8840371@unicorn.WWU.EDU (Todd Crowe) (12/01/89)

*** Sorry about posting to the whole net but my mail bounced and this info
     may be of use to others....

	I used to do product support for the Mach 20, but it's been a while
and I don't have any of the information handy.  The most important things
to check are:

		1) Make sure the the jumpers for the memory setting are
	correct (according to the amound of memory you have on the mother
	board and any expansion card, minus the Memory Plus).
		2) Make sure none of the I/O ports conflict with other
	boards in the system (easy way to check is to pull other nonessential
	boards, i.e. _not_ the hard drive, video card, floppies, etc).
		3) Try plugging the 8088 back in.  If the computer boots
	probably something is wrong with the Mach 20 (you have probably
	eliminated this possibility by testing it in two machines).

My guess is that there is something wrong with the board (since you've
tried 2 machines, both true blue IBM's).  Also, the Mach 20 will NOT replace
an 8086, some XT's came with 8086's.  If this is the case, the Mach 20 will
not work.
	If nothing else call Microsoft Product Support Services:

		(206) 454-2030  (Bellevue, Washington)

           |                   Todd Crowe                        |
           |  n8840371@unicorn.wwu.edu or TODDC@nessie.wwu.edu   |