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Date : Fri, 11 Jun 1999 16:47:07 +1200 From : Michael Foot <mikef@...> Subject: BBC 8271 commands Hi, I'm wanting to know exactly how the BBC controlled the disc via the 8271 chip so I can emulate it properly. Can anyone fill in or correct the locations in the memory map below? FE80 read status register, write command FE81 read result register, write parameter FE82 FE83 FE84 read/write data register FE85 FE86 Thanks very much, Mike.
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