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| 1 | ; File name : AH14h_HDiag.asm
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| 2 | ; Project name : IDE BIOS
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| 3 | ; Created date : 28.9.2007
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| 4 | ; Last update : 12.4.2010
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| 5 | ; Author : Tomi Tilli
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| 6 | ; Description : Int 13h function AH=14h, Controller Internal Diagnostic.
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| 7 |
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| 8 | ; Section containing code
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| 9 | SECTION .text
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| 10 |
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| 11 | ;--------------------------------------------------------------------
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| 12 | ; Int 13h function AH=14h, Controller Internal Diagnostic.
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| 13 | ;
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| 14 | ; AH14h_HandlerForControllerInternalDiagnostic
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| 15 | ; Parameters:
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| 16 | ; AH: Bios function 14h
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| 17 | ; DL: Drive number (8xh)
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| 18 | ; Parameters loaded by Int13h_Jump:
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| 19 | ; DS: RAMVARS segment
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| 20 | ; Returns:
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| 21 | ; AH: BIOS Error code
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| 22 | ; AL: 0 (custom for this BIOS: .bReset byte from DPT)
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| 23 | ; CF: 0 if succesfull, 1 if error
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| 24 | ; IF: 1
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| 25 | ; Corrupts registers:
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| 26 | ; Flags
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| 27 | ;--------------------------------------------------------------------
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| 28 | ALIGN JUMP_ALIGN
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| 29 | AH14h_HandlerForControllerInternalDiagnostic:
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| 30 | call FindDPT_ForDriveNumber ; DS:DI now points to DPT
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| 31 | mov al, [di+DPT.bReset] ; Load reset byte to AL
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| 32 | test al, al ; Any error?
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| 33 | jnz SHORT .ReturnError
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| 34 | xor ah, ah ; Zero AH and CF since success
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| 35 | jmp Int13h_PopDiDsAndReturn
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| 36 | .ReturnError:
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| 37 | mov ah, RET_HD_RESETFAIL
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| 38 | stc
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| 39 | jmp Int13h_PopDiDsAndReturn
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