Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!watmath!clyde!burl!ulysses!ucbvax!usc-isid.arpa!DYOUNG From: DYOUNG@USC-ISID.ARPA (C. David Young) Newsgroups: net.micro.atari8 Subject: Re: Need info: Hardware mod for Sys-Reset Message-ID: <8603142258.AA25985@ucbvax.berkeley.edu> Date: Fri, 14-Mar-86 17:48:25 EST Article-I.D.: ucbvax.8603142258.AA25985 Posted: Fri Mar 14 17:48:25 1986 Date-Received: Sat, 15-Mar-86 21:26:14 EST References: Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 12 The 400/800 OS will always do a coldstart if you reset the CPU. This is done by adding a 47 ohm resistor in series with a momentary switch between the two pads near R156 on the 800 or R183 on the 400. To do the coldstart you close the coldstart switch and then press RESET. This will cause the CPU to do what it normally does on powerup, including clearing all of system RAM. However, the CPU does not clear the extra RAM which may be present (i.e., anything beyond the 64K that it knows about. This is a great advantage if you have a ramdisk since this allows you to reboot the system without losing its contents. Also it is better for your computer than cycling power. David Young -------