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Feature request: Extended DMA Controller emulation #247

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maximilien-noal opened this issue Feb 7, 2023 · 2 comments
Open

Feature request: Extended DMA Controller emulation #247

maximilien-noal opened this issue Feb 7, 2023 · 2 comments
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compatibility Emulator compatibility with DOS apps hardware hardware device (can be virtual) emulation memory Emulator memory access mode and layout

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@maximilien-noal
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The DMA Controller is sufficient for Dune, but is clearly incomplete.
@maximilien-noal maximilien-noal added compatibility Emulator compatibility with DOS apps memory Emulator memory access mode and layout hardware hardware device (can be virtual) emulation labels Feb 7, 2023
@maximilien-noal
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A mandatory read: https://martypc.blogspot.com/2023/05/exploring-dma-on-ibm-pc.html

And here is the Intel white paper about the DMA controller:
Intel-8237-dma.pdf

@maximilien-noal
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Notes about 'DMA 64K boundary crossings' and such:

https://www.os2museum.com/wp/pc-dos-1-1-from-scratch/

@maximilien-noal maximilien-noal mentioned this issue Aug 13, 2023
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compatibility Emulator compatibility with DOS apps hardware hardware device (can be virtual) emulation memory Emulator memory access mode and layout
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