Well of course things always take longer than expected: Taking Douglas's script and Jess's information I was able to get a working script for the rom memory mapping to work. Douglas, the start from the Atari TG can be improved because they just go to a "JumpL" at the end which appears to just jump back to 4000 and keep looping that stat call. Where from Jess' information it is better to wait for the HALT signal back from the VG before we try to probe the memory. So instead of: !TG 0x4000=0x25 ! Why did Atari do this? 0x4001=0x6x (x being 0, 1, 2, 3 depending on the bank you want) 0x4002=0x00 0x4002=0xE0 To 0x4000=0x00 0x4001=0x6x (x being 0, 1, 2, 3 depending on the bank you want) 0x4002=0x20 ! Halt this one is probably unneeded 0x4002=0x20 ! Halt will notify the CPU that the VG is done so the MAP0 MAP1 should be latched now write @ 1640=FF ! VGGO !VGHALT is reported at 0x1200=0x???? ???1 (high on low bit) !aux Waiting for VGHALT REG5 = 1200 0: !Keep reading from 0x1200 and checking the halt bit until it is set read @ REG5 !DPY cur = $E if REGE AND 01 > 0 goto 1 ! Got it, done goto 0 ! not set yet loop back to read again 1: !aux VGHALT SET Another thing I don't know about is the 0x4000=0x25, I have no idea why they did this in testing with my updated code having is 0x00 works fine. Thanks for the help on this one getting my head wrapped around that part was nice. Now I have another screwy problem on a Major Havoc board but will start a new thread on it David -----Original Message----- From: Techtoolslist <techtoolslist-bounces@flippers.com> On Behalf Of David shoemaker Sent: Saturday, June 4, 2022 1:08 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: Re: [Techtoolslist] Major Havoc Fluke 9010 scripts? Nice that makes sense, I wasn't doing the vggo after setting the vector page so it wasn't actually doing it. Out of town this weekend but will definitely put this to use next week. Thanks Sent from my T-Mobile 5G Device Get [1]Outlook for Android References 1. https://aka.ms/AAb9ysg _______________________________________________ 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://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/