| 1 | ; Project name : XTIDE Universal BIOS |
|---|
| 2 | ; Description : Int 13h function AH=24h, Set Multiple Blocks. |
|---|
| 3 | |
|---|
| 4 | ; |
|---|
| 5 | ; XTIDE Universal BIOS and Associated Tools |
|---|
| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. |
|---|
| 7 | ; |
|---|
| 8 | ; This program is free software; you can redistribute it and/or modify |
|---|
| 9 | ; it under the terms of the GNU General Public License as published by |
|---|
| 10 | ; the Free Software Foundation; either version 2 of the License, or |
|---|
| 11 | ; (at your option) any later version. |
|---|
| 12 | ; |
|---|
| 13 | ; This program is distributed in the hope that it will be useful, |
|---|
| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 16 | ; GNU General Public License for more details. |
|---|
| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
|---|
| 18 | ; |
|---|
| 19 | |
|---|
| 20 | ; Section containing code |
|---|
| 21 | SECTION .text |
|---|
| 22 | |
|---|
| 23 | ;-------------------------------------------------------------------- |
|---|
| 24 | ; Int 13h function AH=24h, Set Multiple Blocks. |
|---|
| 25 | ; |
|---|
| 26 | ; AH24h_HandlerForSetMultipleBlocks |
|---|
| 27 | ; Parameters: |
|---|
| 28 | ; AL: Same as in INTPACK |
|---|
| 29 | ; DL: Translated Drive number |
|---|
| 30 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
|---|
| 31 | ; SS:BP: Ptr to IDEPACK |
|---|
| 32 | ; Parameters on INTPACK: |
|---|
| 33 | ; AL: Number of Sectors per Block (1, 2, 4, 8, 16, 32, 64 or 128) |
|---|
| 34 | ; Returns with INTPACK: |
|---|
| 35 | ; AH: Int 13h return status |
|---|
| 36 | ; CF: 0 if successful, 1 if error |
|---|
| 37 | ;-------------------------------------------------------------------- |
|---|
| 38 | AH24h_HandlerForSetMultipleBlocks: |
|---|
| 39 | %ifndef USE_186 |
|---|
| 40 | call AH24h_SetBlockSize |
|---|
| 41 | jmp Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
|---|
| 42 | %else |
|---|
| 43 | push Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH |
|---|
| 44 | ; Fall to AH24h_SetBlockSize |
|---|
| 45 | %endif |
|---|
| 46 | |
|---|
| 47 | |
|---|
| 48 | ;-------------------------------------------------------------------- |
|---|
| 49 | ; AH24h_SetBlockSize |
|---|
| 50 | ; Parameters: |
|---|
| 51 | ; AL: Number of Sectors per Block (1, 2, 4, 8, 16, 32, 64 or 128) |
|---|
| 52 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
|---|
| 53 | ; SS:BP: Ptr to IDEPACK |
|---|
| 54 | ; Returns: |
|---|
| 55 | ; AH: Int 13h return status |
|---|
| 56 | ; CF: 0 if successful, 1 if error |
|---|
| 57 | ; Corrupts registers: |
|---|
| 58 | ; AL, CX, DX |
|---|
| 59 | ;-------------------------------------------------------------------- |
|---|
| 60 | AH24h_SetBlockSize: |
|---|
| 61 | ; XT-CF does not support largest block size in DMA mode. |
|---|
| 62 | %ifdef MODULE_8BIT_IDE |
|---|
| 63 | call AccessDPT_IsThisDeviceXTCF |
|---|
| 64 | cmp ah, DEVICE_8BIT_XTCF_DMA |
|---|
| 65 | jne SHORT .NoNeedToLimitBlockSize |
|---|
| 66 | cmp al, XTCF_DMA_MODE_MAX_BLOCK_SIZE |
|---|
| 67 | ja SHORT AH1Eh_LoadInvalidCommandToAHandSetCF |
|---|
| 68 | .NoNeedToLimitBlockSize: |
|---|
| 69 | %endif ; MODULE_8BIT_IDE |
|---|
| 70 | |
|---|
| 71 | push bx |
|---|
| 72 | |
|---|
| 73 | push ax |
|---|
| 74 | xchg dx, ax ; DL = Block size (Sector Count Register) |
|---|
| 75 | mov al, COMMAND_SET_MULTIPLE_MODE |
|---|
| 76 | mov bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY) |
|---|
| 77 | call Idepack_StoreNonExtParametersAndIssueCommandFromAL |
|---|
| 78 | pop bx |
|---|
| 79 | jnc SHORT .StoreBlockSize |
|---|
| 80 | mov bl, 1 ; Block size 1 will always work |
|---|
| 81 | .StoreBlockSize: ; Store new block size to DPT and return |
|---|
| 82 | mov [di+DPT_ATA.bBlockSize], bl |
|---|
| 83 | |
|---|
| 84 | pop bx |
|---|
| 85 | ret |
|---|
