Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watmath!clyde!cbosgd!oucs!shapiro
From: shapiro@oucs.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: turbo xt mother board software speed switch
Message-ID: <636@pdp.cs.OHIOU.EDU>
Date: Sat, 5-Sep-87 21:19:42 EDT
Article-I.D.: pdp.636
Posted: Sat Sep  5 21:19:42 1987
Date-Received: Sun, 6-Sep-87 20:13:42 EDT
Organization: Ohio University CS Dept., Athens
Lines: 45
Keywords: turbo xt speed switch


In my recent posting I requested info on programming my xt turbo
motherboard to switch speeds without pressing the ctrl-alt-'-' on
the numeric keypad. In a recent issue of PC magazine, V 6 # 16 dated 
9/29/87 I found the solution. the following debug session will
create 3 com files to switch speeds on the motherboard. They are
 
FAST.COM - put motherboard in 8 mhz mode.
SLOW.COM - put motherboard in 4.77 mhz mode.
SWITCHSP.COM - put motherboard in the alternate mode
               if in 4.77 then go to 8 or if in 8 go to 4.77
 
A>debug<cr>
-RCX<cr>
-7<cr>
-n fast.com<cr>
-a 100<cr>
-in al,61<cr>
-or al,4<cr>
-out 61,al<cr>
-<cr>
-w<cr>
-n slow.com<cr>
-a 102<cr>
-and al,fb<cr>
-<cr>
-w<cr>
-n switchsp.com<cr>
-a 102<cr>
-xor al,4<cr>
-<cr>
-w<cr>
-q<cr>
A>

The symbol <cr> represents the pressing of the carriage return key.
 
I hope this will be of benefit to some other users.
 
Brian
-- 
Brian Shapiro, Ohio University Computing  and  Learning Services
Haning Hall, Athens, Ohio 45701   (614) 593-1608
BITNET: shapirob@ouaccvma                 CSNET: shapiro@pdp.cs.ohiou.edu
UUCP:   ihnp4!cbosgd!cbdkc1!oucs!shapiro  FidoNET : net 126 node 110