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VRAM用I/Oポートの実装 #19

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jpnykw opened this issue Sep 24, 2020 · 1 comment

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enhancement high

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jpnykw commented Sep 24, 2020

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jpnykw commented Sep 24, 2020

CPUは直接VRAMへアクセスすることが出来ないからI/Oポートを通してアクセスする
$2006にVRAMのアドレスを書き込む $2007をread/writeすることでアクセス

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