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Last change
on this file since 88 was 84, checked in by krille_n_@…, 13 years ago |
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Minor size optimizations in various files.
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File size:
1.2 KB
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| [3] | 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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| [84] | 4 | ; Last update : 14.1.2011
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| 5 | ; Author : Tomi Tilli,
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| 6 | ; : Krister Nordvall (optimizations)
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| [3] | 7 | ; Description : Int 13h function AH=14h, Controller Internal Diagnostic.
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| 8 |
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| 9 | ; Section containing code
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| 10 | SECTION .text
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| 11 |
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| 12 | ;--------------------------------------------------------------------
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| 13 | ; Int 13h function AH=14h, Controller Internal Diagnostic.
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| 14 | ;
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| 15 | ; AH14h_HandlerForControllerInternalDiagnostic
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| 16 | ; Parameters:
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| 17 | ; AH: Bios function 14h
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| 18 | ; DL: Drive number (8xh)
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| 19 | ; Parameters loaded by Int13h_Jump:
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| 20 | ; DS: RAMVARS segment
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| 21 | ; Returns:
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| 22 | ; AH: BIOS Error code
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| 23 | ; AL: 0 (custom for this BIOS: .bReset byte from DPT)
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| 24 | ; CF: 0 if succesfull, 1 if error
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| 25 | ; IF: 1
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| 26 | ; Corrupts registers:
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| 27 | ; Flags
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| 28 | ;--------------------------------------------------------------------
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| 29 | ALIGN JUMP_ALIGN
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| 30 | AH14h_HandlerForControllerInternalDiagnostic:
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| 31 | call FindDPT_ForDriveNumber ; DS:DI now points to DPT
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| 32 | mov al, [di+DPT.bReset] ; Load reset byte to AL
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| 33 | test al, al ; Any error?
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| [84] | 34 | mov ah, RET_HD_RESETFAIL ; Assume there was an error
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| 35 | stc
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| 36 | jnz SHORT .Return
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| [3] | 37 | xor ah, ah ; Zero AH and CF since success
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| [84] | 38 | .Return:
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| [35] | 39 | jmp Int13h_PopDiDsAndReturn
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