The guide helps, I was able to get the Alpha Rom's to test, though I am getting different signatures if I do immediate mode (select page then do rom sig) vs doing it in script code. That is a bit confusing. For posterity: Alpha rom pages are selected by writing to 0x1740 then you read them in addresses 0x2000-0x3FFF (1/2 a rom is paged in at a time). And the watchdog disable is key to that working. 00 = low 1/2 of the 1Q 01 = high 1/2 of 1Q 10 = low 1/2 1N/P 11 = high 1/2 of 1N/P The memory map and mame driver mention paged ram, but the troubleshooting guide doesn't do anything to page it for testing and just testing the range 0000-03FF then 0400-7FF (which leaves the block from 0800-09FF untested). This is odd as the two SRAM are 6116 which are 2K each. So this would need a memory map of 0000-07FF for each device. The schematics list a map of: 0000-01FF (1/2K) 0200-07FF (paged 3K) 0800-09FF (1/2k) I need to play with writing to the Program ram select address 1780 and see what it does to the SWZRAM0/1 signals. An additional strange thing is in the trouble shooting guide it looks like the are using address 0x4001 to select the paged vector rom: 60 = 1/2 6H 61 = 1/2 6H 62 = 1/2 6J/K 63 = 1/2 6J/K The mame drive and the schematic memory map just list 4000-4FFF as Vec Gen Ram. The schematic page 6A shows 6J/K & 6H OE signals being controlled by way of MAP1 going into the LS04 at 4P. But I don't see on the source of the MAP1 signal. David -----Original Message----- From: Techtoolslist <techtoolslist-bounces@flippers.com> On Behalf Of B L Sent: Thursday, June 2, 2022 11:22 PM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: Re: [Techtoolslist] Major Havoc Fluke 9010 scripts? Have a look in the Major Havoc Troubleshooting guide (TG-252), there are your answers. You need to apply the watchdog disable in order to carry out the tests. Also, don't forget that you have 2 processors to (alpha and gamma) doing different stuff on this board. ________________________________ From: Techtoolslist <techtoolslist-bounces@flippers.com> on behalf of davids@oz.net <davids@oz.net> Sent: Friday, June 3, 2022 6:12 AM To: 'Technical Tools Mail List' <techtoolslist@flippers.com> Subject: [Techtoolslist] Major Havoc Fluke 9010 scripts? Working on a Major Havoc, and the funky memory map (paged, rams & roms) are giving me fits. Anyone have scripts for this game? David _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/