Last change
on this file since 150 was
150,
checked in by aitotat, 13 years ago
|
Changes to XTIDE Universal BIOS:
- Redesigned Disk Parameter Tables.
- Code generalizations for supporting non-IDE devices in the future.
|
File size:
1.4 KB
|
Rev | Line | |
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[150] | 1 | ; Project name : XTIDE Universal BIOS |
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| 2 | ; Description : IDE Register I/O functions. |
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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 | ; IdeIO_OutputALtoIdeRegisterInDX |
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| 9 | ; Parameters: |
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| 10 | ; AL: Byte to output |
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| 11 | ; DX: IDE Register |
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| 12 | ; CS:BX: Ptr to IDEVARS |
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| 13 | ; Returns: |
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| 14 | ; Nothing |
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| 15 | ; Corrupts registers: |
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| 16 | ; DX |
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| 17 | ;-------------------------------------------------------------------- |
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| 18 | ALIGN JUMP_ALIGN |
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| 19 | IdeIO_OutputALtoIdeRegisterInDX: |
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| 20 | add dx, [cs:bx+IDEVARS.wPort] |
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| 21 | out dx, al |
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| 22 | ret |
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| 23 | |
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| 24 | |
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| 25 | ;-------------------------------------------------------------------- |
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| 26 | ; IdeIO_OutputALtoIdeControlBlockRegisterInDX |
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| 27 | ; Parameters: |
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| 28 | ; AL: Byte to output |
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| 29 | ; DX: IDE Control Block Register |
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| 30 | ; CS:BX: Ptr to IDEVARS |
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| 31 | ; Returns: |
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| 32 | ; Nothing |
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| 33 | ; Corrupts registers: |
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| 34 | ; DX |
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| 35 | ;-------------------------------------------------------------------- |
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| 36 | ALIGN JUMP_ALIGN |
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| 37 | IdeIO_OutputALtoIdeControlBlockRegisterInDX: |
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| 38 | add dx, [cs:bx+IDEVARS.wPortCtrl] |
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| 39 | out dx, al |
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| 40 | ret |
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| 41 | |
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| 42 | |
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| 43 | ;-------------------------------------------------------------------- |
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| 44 | ; IdeIO_InputToALfromIdeRegisterInDX |
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| 45 | ; Parameters: |
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| 46 | ; DX: IDE Register |
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| 47 | ; CS:BX: Ptr to IDEVARS |
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| 48 | ; Returns: |
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| 49 | ; AL: Inputted byte |
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| 50 | ; Corrupts registers: |
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| 51 | ; DX |
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| 52 | ;-------------------------------------------------------------------- |
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| 53 | ALIGN JUMP_ALIGN |
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| 54 | IdeIO_InputToALfromIdeRegisterInDX: |
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| 55 | add dx, [cs:bx+IDEVARS.wPort] |
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| 56 | in al, dx |
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| 57 | ret |
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