[148] | 1 | ; Project name : XTIDE Universal BIOS |
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[3] | 2 | ; Description : Int 13h function AH=23h, |
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| 3 | ; Set Controller Features Register. |
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| 4 | |
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[376] | 5 | ; |
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| 6 | ; XTIDE Universal BIOS and Associated Tools |
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| 7 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. |
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| 8 | ; |
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| 9 | ; This program is free software; you can redistribute it and/or modify |
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| 10 | ; it under the terms of the GNU General Public License as published by |
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| 11 | ; the Free Software Foundation; either version 2 of the License, or |
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| 12 | ; (at your option) any later version. |
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| 13 | ; |
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| 14 | ; This program is distributed in the hope that it will be useful, |
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| 15 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | ; GNU General Public License for more details. |
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| 18 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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| 19 | ; |
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| 20 | |
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[3] | 21 | ; Section containing code |
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| 22 | SECTION .text |
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| 23 | |
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| 24 | ;-------------------------------------------------------------------- |
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| 25 | ; Int 13h function AH=23h, Set Controller Features Register. |
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| 26 | ; |
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| 27 | ; AH23h_HandlerForSetControllerFeatures |
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| 28 | ; Parameters: |
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[148] | 29 | ; AL, CX: Same as in INTPACK |
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| 30 | ; DL: Translated Drive number |
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| 31 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 32 | ; SS:BP: Ptr to IDEPACK |
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| 33 | ; Parameters on INTPACK: |
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[3] | 34 | ; AL: Feature Number (parameter to Features Register = subcommand) |
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[150] | 35 | ; (Parameter registers are undocumented, these are specific for this BIOS): |
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| 36 | ; BL: Parameter to Sector Count Register (subcommand specific) |
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| 37 | ; BH: Parameter to LBA Low / Sector Number Register (subcommand specific) |
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| 38 | ; CL: Parameter to LBA Middle / Cylinder Low Register (subcommand specific) |
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| 39 | ; CH: Parameter to LBA High / Cylinder High Register (subcommand specific) |
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| 40 | ; Returns with INTPACK: |
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[148] | 41 | ; AH: Int 13h return status |
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[294] | 42 | ; CF: 0 if successful, 1 if error |
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[148] | 43 | ;-------------------------------------------------------------------- |
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| 44 | AH23h_HandlerForSetControllerFeatures: |
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[150] | 45 | xchg si, ax ; SI = Feature Number |
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| 46 | mov dx, [bp+IDEPACK.intpack+INTPACK.bx] |
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[148] | 47 | %ifndef USE_186 |
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| 48 | call AH23h_SetControllerFeatures |
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| 49 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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| 50 | %else |
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| 51 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
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[162] | 52 | ; Fall to AH23h_SetControllerFeatures |
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[148] | 53 | %endif |
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| 54 | |
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| 55 | |
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| 56 | ;-------------------------------------------------------------------- |
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| 57 | ; AH23h_SetControllerFeatures |
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| 58 | ; Parameters: |
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[150] | 59 | ; DL: Parameter to Sector Count Register (subcommand specific) |
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| 60 | ; DH: Parameter to LBA Low / Sector Number Register (subcommand specific) |
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| 61 | ; CL: Parameter to LBA Middle / Cylinder Low Register (subcommand specific) |
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| 62 | ; CH: Parameter to LBA High / Cylinder High Register (subcommand specific) |
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| 63 | ; SI: Feature Number (parameter to Features Register = subcommand) |
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[148] | 64 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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[150] | 65 | ; SS:BP: Ptr to IDEPACK |
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[3] | 66 | ; Returns: |
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| 67 | ; AH: Int 13h return status |
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[294] | 68 | ; CF: 0 if successful, 1 if error |
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[3] | 69 | ; Corrupts registers: |
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[150] | 70 | ; AL, BX, CX, DX |
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[3] | 71 | ;-------------------------------------------------------------------- |
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[148] | 72 | AH23h_SetControllerFeatures: |
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[150] | 73 | mov al, COMMAND_SET_FEATURES |
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| 74 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY) |
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| 75 | jmp Idepack_StoreNonExtParametersAndIssueCommandFromAL |
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[473] | 76 | |
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| 77 | |
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| 78 | %ifdef MODULE_8BIT_IDE |
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| 79 | ;-------------------------------------------------------------------- |
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| 80 | ; AH23h_Enable8bitPioMode |
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| 81 | ; AH23h_Disable8bitPioMode |
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| 82 | ; Parameters: |
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| 83 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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| 84 | ; SS:BP: Ptr to IDEPACK |
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| 85 | ; Returns: |
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| 86 | ; AH: Int 13h return status |
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| 87 | ; CF: 0 if successful, 1 if error |
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| 88 | ; Corrupts registers: |
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| 89 | ; AL, BX, CX, DX, SI |
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| 90 | ;-------------------------------------------------------------------- |
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| 91 | AH23h_Enable8bitPioMode: |
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| 92 | mov si, FEATURE_ENABLE_8BIT_PIO_TRANSFER_MODE |
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| 93 | jmp SHORT AH23h_SetControllerFeatures |
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| 94 | AH23h_Disable8bitPioMode: |
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| 95 | mov si, FEATURE_DISABLE_8BIT_PIO_TRANSFER_MODE |
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| 96 | jmp SHORT AH23h_SetControllerFeatures |
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| 97 | %endif ; MODULE_8BIT_IDE |
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