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Need info: Hardware mod for Sys-Reset [message #283113] Mon, 10 March 1986 11:51 Go to next message
long is currently offline  long
Messages: 7
Registered: January 1986
Karma: 0
Junior Member
Article-I.D.: sask.343
Posted: Mon Mar 10 11:51:12 1986
Date-Received: Mon, 10-Mar-86 20:31:21 EST
Distribution: net
Organization: University of Saskatchewan, CANADA
Lines: 25



I am the proud new owner of a 512k board for my Atari 800.
I must confess that about the only way to use this memory is
as a Ramdisk, and I do have the program to do this.  

The problem??
   If/When the thing locks up on me and will not respond to
System-Reset, the only thing I can do is to reboot, and lose
everything.  I would like one more avenue to try, that of the
wiring in a button to a 'hard' reset, that is, reset the
microprocessor.  Once upon a time there were articles on how
to do it.  (a wire, a switch, and a pull-up/pull-down resistor)
Anybody remember how to do it??

Part 2:
   Will this solve my problem, or will a hard reset to the
microprocessor reboot the whole machine anyways??


		      Thanks,

			   Warren Long
			   University of Saskatchewan
			   Canada
Re: Need info: Hardware mod for Sys-Reset [message #283133 is a reply to message #283113] Thu, 13 March 1986 19:45 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: DYOUNG@USC-ISID.ARPA (C. David Young)
Article-I.D.: ucbvax.8603140125.AA06057
Posted: Thu Mar 13 19:45:41 1986
Date-Received: Sat, 15-Mar-86 19:13:40 EST
References: <343@sask.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 13

If you will give me your mail address I will send you a sheet
describing the coldstart mod. However, it will not do you much good unless
you have an 8K OMNIMON in the system to take control after resetting the
CPU. Also, I have not had much luck in preserving the contents of the
ramdisk when the CPU locks up. I think the RAM must lose the refresh
when the CPU locks up.

David Young



 
-------
Re: Need info: Hardware mod for Sys-Reset [message #283136 is a reply to message #283113] Fri, 14 March 1986 10:50 Go to previous message
jhs is currently offline  jhs
Messages: 26
Registered: May 2013
Karma: 0
Junior Member
Article-I.D.: mitre-be.8603141540.AA29245
Posted: Fri Mar 14 10:50:08 1986
Date-Received: Sat, 15-Mar-86 21:20:00 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The MITRE Corp., Bedford, MA
Lines: 17

FYI - If the 8K OMNIMON is anything like OMNIMONXL, and you are as serious
about your 800 as buying a 512K upgrade suggests, you certainly shouldn't
waste any time in ordering it.  (Though not on the ARPANET, of course!)

David's phone number, if you want information on OMNIMON, is (214) 235-2146
and his address is:

		CDY Consulting
		421 Hanbee
		Richardson, TX 75080.

						-John Sangster
						jhs @ mitre-bedford.arpa

NOTE:  I have no financial interest in CDY Consulting; I am just a satisfied
customer, having bought OMNIMONXL, the 80-column display upgrade OMNIVIEW,
and the 256KXL 256-K ram upgrade for my 800XL.
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