All info herein was obtained using a Fluke 9100A. compiled by Andy Welburn (warlords@ntlworld.com) You can use this info to run tests on Asteroids Deluxe boards and locate the exact IC at fault if the test fails, or differs. You could assemble a script form this information that would pinpoint specific inconsistancies. The fluke 9100A does not have serial transfer capabilities, so i'm stuck tapping in the tests manually, no scripting for me. I'm still looking for the video card/keyboard/editing suite module that the fluke 9100A uses... that or a way of reading/writing OS/9 disks :) this doc is a bit incomplete as i moved on, still some good info in here tho. Asteroids deluxe seems to have been shipped with a combination of revision roms, ie, was there an entire set of rev. 02 roms? i don't think so, the one .02 rom i come across is probably a bugfix for something, no need to change the rest. RAMS: ^^^^^ RANGE | MASK | Board Location ======================================= 0000 -> 03FF | 0F | L1 (Scratch RAM) 0000 -> 03FF | F0 | M1 (Scratch RAM) ROMS: ^^^^^ RANGE | SIG | IC description | Board Location ================================================== 6000 -> 67FF | C318 | 036430.01 | D1 (Program ROM) 6800 -> 6FFF | CB9A | 036431.01 | E/F1 (Program ROM) 7000 -> 77FF | 3A1E | 036432.01 | F/H1 (Program ROM) 7800 -> 7FFF | 66B7 | 036433.02 | J1 (Program ROM) 4800 -> 4FFF | 1782 | 036799.01 | R2 (Vector ROM) 5000 -> 57FF | 66B7 | 036800.01 | N/P2 (Vector ROM)