| カテゴリ | 重要度 | ステータス | 解決状況 | 登録日時 | 最終更新 |
|---|---|---|---|---|---|
 ゲームプレイ | 中 | 担当者決定 | 未処理 | 2025-05-07 04:23 | 2025-06-11 06:08 |
| テスター | vanfanel | 担当者 | Kale | ソース | pc/ct486.cpp |
| バージョン | 0.277 | 発生バージョン | 修正バージョン | ||
| 修正コミット | プルリク | ||||
| フラグ | |||||
| セット | ct486 [supaplex, Prehistorik 2] | ||||
| セット詳細 |
 ct486 - PC/AT 486 with CS4031 chipset | ||||
| 概 要 | [Supaplex, Prehistorik 2] ハードウェアスクロールの問題がある。 | ||||
| 詳 細 | Some games using VGA hardware scrolling (a technique known as "pel panning" back in the DOS days) present severe problems in the ct486 driver. I have tried different VGA card models in slot1 (svga_s3, vga, mach64), but the results are always the same: -Supaplex: Score are on the lower part of the screen scrolls along with the main play area, then wraps to it's initial position, then repeats. This scrore area should remain still. Happens both with original game and with the speed-fixed version commonly known as SPFIX63. -Prehistorik 2: When the game starts, the scrolling background before the level loads, as well as the map, also scroll in jagged steps and "sway" back and forth periodically. | ||||
| 再現手順 | Simply run "Supaplex" or "Prehistorik 2" with the ct486 driver. | ||||
| 追加情報 | There were similar problems in the 86box emulator with "pel panning", but they were fixed time ago. This is the issue where these problems were reported in 86box: https://github.com/86Box/86Box/issues/462 And this is the commit where this was fixed: https://github.com/86Box/86Box/commit/ac0a1ee327de845bcfe193778c24780839310b7f I really hope this makes the fix easy to implement in MAME, too! :) | ||||
| 添付ファイル |  MANUAL.PDF (2025-05-07 19:23) | ||||