| カテゴリ | 重要度 | ステータス | 解決状況 | 登録日時 | 最終更新 |
|---|---|---|---|---|---|
 既知事項/未実装 | 低 | 解決済み | 修正済み | 2020-05-13 17:26 | 2020-06-25 03:53 |
| テスター | d18c7db | 担当者 | hap | ソース | atari/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 | |
| 修正コミット | プルリク | ||||
| 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. | ||||
| 追加情報 | |||||
| 添付ファイル | |||||