Turbo-486EX model50
i486DX 50MHzを使用した京都マイクロコンピュータ製のPC-9801RA/DA用アクセラレータです。
ディップスイッチ
残念ながらマニュアルが無いので、試行錯誤で設定してみました。
基板はモデル66と同じに見えたので、同様にNo.1〜4のON/OFF全ての組合せを試した結果は、下表の通りでした。CLOCKはベンチマーク(CPUBENCH)結果からの推定です。
使用する際は自己責任でどうぞ。
| SW2 | SW1 | 推定CLOCK | CPUBENCH | 備考 |
No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 初代98比 | 実行時間(sec) |
ON | * | * | | * | * | * | * | * | * | * | * | * | * | * | * | 60MHz相当 | 69.79 | 0.99 | |
OFF | | | * | | | | | | | | | | | | |
ON | * | * | | * | * | * | * | * | * | * | | * | * | * | * | 60MHz相当 | 69.79 | 0.99 | |
OFF | | | * | | | | | | | | * | | | | |
ON | * | * | | * | * | * | * | * | * | | * | * | * | * | * | 50MHz相当 | 57.58 | 1.20 | |
OFF | | | * | | | | | | | * | | | | | |
ON | * | * | | * | * | * | * | * | | * | * | * | * | * | * | 45MHz相当 | 50.07 | 1.38 | |
OFF | | | * | | | | | | * | | | | | | |
ON | * | * | | * | * | * | * | | * | * | * | * | * | * | * | - | - | - | ピポ音するもメモリカウントせず |
OFF | | | * | | | | | * | | | | | | | |
ON | * | * | | * | * | * | * | * | | * | | * | * | * | * | 45MHz相当 | 50.07 | 1.38 | |
OFF | | | * | | | | | | * | | * | | | | |
ON | * | * | | * | * | * | * | | * | | * | * | * | * | * | - | - | - | ピポ音するもメモリカウントせず |
OFF | | | * | | | | | * | | * | | | | | |
ON | * | * | | * | * | * | * | * | | | * | * | * | * | * | 40MHz相当 | 46.37 | 1.49 | |
OFF | | | * | | | | | | * | * | | | | | |
ON | * | * | | * | * | * | * | | * | * | | * | * | * | * | 30MHz相当 | 37.96 | 1.82 | |
OFF | | | * | | | | | * | | | * | | | | |
ON | * | * | | * | * | * | * | * | * | | | * | * | * | * | 50MHz相当 | 57.58 | 1.20 | |
OFF | | | * | | | | | | | * | * | | | | |
ON | * | * | | * | * | * | * | | | * | * | * | * | * | * | 20MHz相当 | 25.40 | 2.72 | |
OFF | | | * | | | | | * | * | | | | | | |
ON | * | * | | * | * | * | * | * | | | | * | * | * | * | 40MHz相当 | 46.37 | 1.49 | |
OFF | | | * | | | | | | * | * | * | | | | |
ON | * | * | | * | * | * | * | | * | | | * | * | * | * | 30MHz相当 | 36.95 | 1.87 | |
OFF | | | * | | | | | * | | * | * | | | | |
ON | * | * | | * | * | * | * | | | * | | * | * | * | * | 20MHz相当 | 25.40 | 2.72 | |
OFF | | | * | | | | | * | * | | * | | | | |
ON | * | * | | * | * | * | * | | | | * | * | * | * | * | 20MHz相当 | 25.31 | 2.73 | |
OFF | | | * | | | | | * | * | * | | | | | |
ON | * | * | | * | * | * | * | | | | | * | * | * | * | 20MHz相当 | 25.31 | 2.73 | |
OFF | | | * | | | | | * | * | * | * | | | | |
<2015.5.5>
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