Last change
on this file since 277 was
277,
checked in by gregli@…, 12 years ago
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Moved the bulk of the serial code to the assembly library, for inclusion in other utilities. Fixed a bug in int13h.asm when floppy support was not enabled that was preventing foreign drives from working properly.
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File size:
1.1 KB
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Rev | Line | |
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[150] | 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : Sets Serial Device specific parameters to DPT. |
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| 3 | |
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| 4 | ; Section containing code |
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| 5 | SECTION .text |
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| 6 | |
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| 7 | ;-------------------------------------------------------------------- |
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| 8 | ; SerialDPT_Finalize |
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| 9 | ; Parameters: |
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| 10 | ; DS:DI: Ptr to Disk Parameter Table |
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| 11 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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| 12 | ; Returns: |
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[258] | 13 | ; CF: Set, indicates that this is a floppy disk |
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| 14 | ; Clear, indicates that this is a hard disk |
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[150] | 15 | ; Corrupts registers: |
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[242] | 16 | ; AX |
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[150] | 17 | ;-------------------------------------------------------------------- |
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[179] | 18 | SerialDPT_Finalize: |
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[277] | 19 | mov ax, [es:si+SerialServer_ATA_wPortAndBaud] |
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[242] | 20 | mov [di+DPT_SERIAL.wSerialPortAndBaud], ax |
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[258] | 21 | |
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| 22 | ; |
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| 23 | ; Note that this section is not under %ifdef MODULE_SERIAL_FLOPPY. It is important to |
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[277] | 24 | ; distinguish floppy disks presented by the server and not treat them as hard disks, even |
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[258] | 25 | ; if the floppy support is disabled. |
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| 26 | ; |
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[277] | 27 | mov al, [es:si+SerialServer_ATA_wFloppyFlagAndType] |
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[258] | 28 | or al, FLGH_DPT_SERIAL_DEVICE |
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| 29 | or byte [di+DPT.bFlagsHigh], al |
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| 30 | |
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| 31 | test al, FLGH_DPT_SERIAL_FLOPPY ; clears CF |
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| 32 | jz .notfloppy |
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| 33 | stc |
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| 34 | .notfloppy: |
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| 35 | |
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[179] | 36 | ret |
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| 37 | |
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