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Timestamp:
Feb 22, 2012, 7:01:53 PM (13 years ago)
Author:
gregli@…
google:author:
gregli@hotmail.com
Message:

Added floppy drive emulation over the serial connection (MODULE_SERIAL_FLOPPY). Along the way, various optimizations were made to stay within the 8K ROM size target. Also, serial code now returns the number of sectors transferred.

File:
1 edited

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Added
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  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm

    r227 r258  
    4343    push    cx
    4444
     45%ifdef MODULE_SERIAL
     46    ;
     47    ; no need to do this for serial deveices, and we use the DPT_RESET flag bits
     48    ; to store the drive type for serial floppy drives (MODULE_SERIAL_FLOPPY)
     49    ;
     50    xor     ah, ah
     51    test    byte [di+DPT.bFlagsHigh], FLGH_DPT_SERIAL_DEVICE    ; Clears CF
     52    jnz     .ReturnNotSuccessfull
     53%endif
     54       
    4555    ; Try to select drive and wait until ready
    4656    or      BYTE [di+DPT.bFlagsHigh], MASKH_DPT_RESET       ; Everything uninitialized
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