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既知事項/未実装解決済み修正済み2020-05-13 17:262020-06-25 03:53
 
テスターd18c7db担当者hapソースatarisy1.cpp
バージョン0.220発生バージョン修正バージョン0.222
フラグ
セット Atari System1 bad ROM dumps
セット詳細
 
概 要Atari System1のROMが吸い出し不良。
詳 細Two Atari BIOS ROMs have bad dumps.

1) ROM 136032.107.b2 CRC(315E4BEA) from LSI PCB has top nibble of every byte set to zero. The fix for this is easy, this ROM should be a dupe of ROM 136032.104.f5 CRC(7A29DC07)

2) ROM 136032.105.l13 CRC(690B37D3) from TTL version 1 is a bad dump (entire file is FF)
再現手順1) mame64.exe -debug -bios 2 indytemp
Immediately on title screen, the text colors at top and bottom of screen are wrong. This is due to top nibble on ROM B2, feeding zeroes to the 4 bit shifter that generates APIX1 line towards the GPC (in schematic), so the line is stuck low. Using ROM F5 fixes this.

2) mame64.exe -debug -bios 1 indytemp
Game fails to run because this ROM provides the upper data byte for the the 68010 processor instruction words. CPU fails to execute properly.
bios 0 and bios 2 are OK. A fresh/good ROM dump is needed for 136032.105.l13.
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