ejb@think.ARPA (Erik Bailey) (09/07/85)
Does anyone know of a way to switch sppeds on a Compaq DeskPro under SOFTWARE? I have found times when it would be useful to switch speeds automatically, such as when booting a non-Compaq DOS (ie PC-DOS 3.0). Also, a flasher program could make a neat attention-getter... BTW - I have Fansi-Console, so don't recommend that (it does speed switching). One more question. There is a switch on DIP #1 that is labeled 'compatibility: enhanced features/normal'. Any ideas? Thanx a lot, and please send replies to the net if they are useful... --Erik
ejb@think.ARPA (Erik Bailey) (11/09/85)
[Go ahead, eat my day!] Well, response from my (ancient) plea for DeskPro software speed switching has finally picked up (2 whole msgs!). Anyway, a couple days ago this appeared in my mailbox. I immediately tried it, and found that it worked. I wanted to find out HOW it worked, so I fired up PFIXPLUS (symbolic debugger), and traced the code through. But, not knowing a thing about 8086 ASM, I was unable to extract the relavent part of MODE.COM to do the switch. Can anyone do this? Unfortunately I cannot post ASM to MODE, as (I assume) it is copyrighted by Compaq. Well, here is the msg, and THANKS to Fred McClimans (?) for this bit of undocumented info. --Erik ----------------------------Fold, staple, mutilate-------------------------- Received: from ddn2 (ddn2.arpa) by GODOT.THINK.COM; Thu, 7 Nov 85 11:08:55 est Date: 7 Nov 85 10:52 EST From: McClimans@DDN2.ARPA Subject: Compaq MODE command To: ejb@think.com Cc: McClimans@DDN2.ARPA After putting in some time last night on the Compaq dilemma, I came up with this: MODE SPEED=<FAST/COMMON> I don't know if you already hit on this (it isn't in the Compaq doc's), but it is interesting none the less. The next step is to break it down. - Fred ---------------------------unfold, unstaple, unmutilate-------------------- -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- -_- Erik Bailey -- 7 Oak Knoll (USENET courtesy of ihnp4!godot!ejb Arlington, MA 02174 Thinking Machines Corp. ejb@think.com.arpa (617) 643-0732 Cambridge, MA) "I was walking in a forest one day and a tree fell in front of me, and I didn't hear it."