| 1 | ; Project name : XTIDE Universal BIOS Configurator v2
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| 2 | ; Description : Functions for flashing the EEPROM.
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| 3 |
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| 4 | ;
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| 5 | ; XTIDE Universal BIOS and Associated Tools
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| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
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| 7 | ;
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| 8 | ; This program is free software; you can redistribute it and/or modify
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| 9 | ; it under the terms of the GNU General Public License as published by
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| 10 | ; the Free Software Foundation; either version 2 of the License, or
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| 11 | ; (at your option) any later version.
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| 12 | ;
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| 13 | ; This program is distributed in the hope that it will be useful,
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | ; GNU General Public License for more details.
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| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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| 18 | ;
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| 19 |
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| 20 | ; Section containing code
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| 21 | SECTION .text
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| 22 |
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| 23 | ;--------------------------------------------------------------------
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| 24 | ; Flash_EepromWithFlashvarsInDSSI
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| 25 | ; Parameters:
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| 26 | ; DS:SI: Ptr to FLASHVARS
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| 27 | ; Returns:
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| 28 | ; FLASHVARS.flashResult
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| 29 | ; Corrupts registers:
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| 30 | ; All, including segments
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| 31 | ;--------------------------------------------------------------------
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| 32 | ALIGN JUMP_ALIGN
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| 33 | Flash_EepromWithFlashvarsInDSSI:
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| 34 | mov [si+FLASHVARS.wProgressUpdateParam], bp ; Store handle to progress DIALOG
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| 35 | mov bp, si ; Flashvars now in SS:BP
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| 36 | mov cx, [bp+FLASHVARS.wPagesToFlash]
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| 37 | ALIGN JUMP_ALIGN
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| 38 | .FlashNextPage:
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| 39 | call DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP
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| 40 | call Flash_SinglePageWithFlashvarsInSSBP
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| 41 | jc SHORT .PollingError
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| 42 | call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
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| 43 | jne SHORT .DataVerifyError
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| 44 |
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| 45 | mov ax, [bp+FLASHVARS.wEepromPageSize]
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| 46 | add [bp+FLASHVARS.fpNextSourcePage], ax
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| 47 | add [bp+FLASHVARS.fpNextComparisonPage], ax
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| 48 | add [bp+FLASHVARS.fpNextDestinationPage], ax
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| 49 |
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| 50 | loop .FlashNextPage
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| 51 | %ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
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| 52 | %if FLASH_RESULT.success = 0 ; Just in case this should ever change
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| 53 | mov [bp+FLASHVARS.flashResult], cl
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| 54 | %else
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| 55 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.success
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| 56 | %endif
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| 57 | %endif
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| 58 | ret
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| 59 |
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| 60 | .PollingError:
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| 61 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.PollingTimeoutError
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| 62 | ret
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| 63 | .DataVerifyError:
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| 64 | mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.DataVerifyError
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| 65 | ret
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| 66 |
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| 67 |
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| 68 | ;--------------------------------------------------------------------
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| 69 | ; Flash_SinglePageWithFlashvarsInSSBP
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| 70 | ; Parameters:
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| 71 | ; SS:BP: Ptr to FLASHVARS
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| 72 | ; Returns:
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| 73 | ; CF: Set if polling timeout error
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| 74 | ; Cleared if page written successfully
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| 75 | ; Corrupts registers:
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| 76 | ; AX, BX, DX, SI, DI, DS, ES
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| 77 | ;--------------------------------------------------------------------
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| 78 | ALIGN JUMP_ALIGN
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| 79 | Flash_SinglePageWithFlashvarsInSSBP:
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| 80 | cld
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| 81 | call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
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| 82 | je SHORT .NoNeedToFlashThePage ; CF cleared
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| 83 |
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| 84 | push cx
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| 85 | call .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
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| 86 | mov cx, [bp+FLASHVARS.wEepromPageSize]
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| 87 | mov si, [bp+FLASHVARS.fpNextSourcePage]
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| 88 | les di, [bp+FLASHVARS.fpNextComparisonPage]
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| 89 | mov bx, [bp+FLASHVARS.fpNextDestinationPage]
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| 90 | call WriteAllChangedBytesFromPageToEeprom
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| 91 | pop cx
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| 92 | .NoNeedToFlashThePage:
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| 93 | ret
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| 94 |
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| 95 | ;--------------------------------------------------------------------
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| 96 | ; .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
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| 97 | ; Parameters:
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| 98 | ; SS:BP: Ptr to FLASHVARS
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| 99 | ; Returns:
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| 100 | ; DX: Ptr to SDP Command function
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| 101 | ; Corrupts registers:
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| 102 | ; BX, SI
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| 103 | ;--------------------------------------------------------------------
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| 104 | ALIGN JUMP_ALIGN
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| 105 | .GetSdpCommandFunctionToDXwithFlashvarsInSSBP:
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| 106 | eMOVZX bx, [bp+FLASHVARS.bEepromSdpCommand]
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| 107 | mov si, [cs:bx+.rgpSdpCommandToEepromTypeLookupTable]
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| 108 | mov bl, [bp+FLASHVARS.bEepromType]
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| 109 | mov dx, [cs:bx+si]
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| 110 | ret
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| 111 |
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| 112 | ALIGN WORD_ALIGN
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| 113 | .rgpSdpCommandToEepromTypeLookupTable:
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| 114 | dw .rgfnFlashWithoutSDP ; SDP_COMMAND.none
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| 115 | dw .rgfnEnableSdpAndFlash ; SDP_COMMAND.enable
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| 116 | dw .rgfnDisableSdpAndFlash ; SDP_COMMAND.disable
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| 117 | .rgfnFlashWithoutSDP: ; SDP_COMMAND.none
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| 118 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2816_2kiB
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| 119 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB
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| 120 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB_MOD
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| 121 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28256_32kiB
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| 122 | dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28512_64kiB
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| 123 | .rgfnEnableSdpAndFlash: ; SDP_COMMAND.enable
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| 124 | dw WriteSdpEnableCommandFor2816 ; EEPROM_TYPE.2816_2kiB
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| 125 | dw WriteSdpEnableCommandFor2864 ; EEPROM_TYPE.2864_8kiB
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| 126 | dw WriteSdpEnableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD
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| 127 | dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB
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| 128 | dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB
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| 129 | .rgfnDisableSdpAndFlash: ; SDP_COMMAND.disable
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| 130 | dw WriteSdpDisableCommandFor2816 ; EEPROM_TYPE.2816_2kiB
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| 131 | dw WriteSdpDisableCommandFor2864 ; EEPROM_TYPE.2864_8kiB
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| 132 | dw WriteSdpDisableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD
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| 133 | dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB
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| 134 | dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB
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| 135 |
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| 136 |
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| 137 | ;--------------------------------------------------------------------
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| 138 | ; AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
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| 139 | ; Parameters:
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| 140 | ; SS:BP: Ptr to FLASHVARS
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| 141 | ; Returns:
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| 142 | ; ZF: Set if pages are equal
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| 143 | ; Cleared if pages are not equal
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| 144 | ; Corrupts registers:
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| 145 | ; SI, DI
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| 146 | ;--------------------------------------------------------------------
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| 147 | ALIGN JUMP_ALIGN
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| 148 | AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP:
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| 149 | push cx
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| 150 | mov cx, [bp+FLASHVARS.wEepromPageSize]
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| 151 | lds si, [bp+FLASHVARS.fpNextSourcePage]
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| 152 | les di, [bp+FLASHVARS.fpNextDestinationPage]
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| 153 | repe cmpsb
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| 154 | pop cx
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| 155 | ret
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| 156 |
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| 157 |
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| 158 | ;--------------------------------------------------------------------
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| 159 | ; ENABLE_SDP
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| 160 | ; Parameters:
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| 161 | ; %1: Offset for first command byte
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| 162 | ; %2: Offset for second command byte
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| 163 | ; DS: Segment to beginning of EEPROM
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| 164 | ; Returns:
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| 165 | ; Nothing
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| 166 | ; Corrupts registers:
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| 167 | ; Nothing
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| 168 | ;--------------------------------------------------------------------
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| 169 | %macro ENABLE_SDP 2
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| 170 | mov BYTE [%1], 0AAh
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| 171 | mov BYTE [%2], 55h
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| 172 | mov BYTE [%1], 0A0h
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| 173 | %endmacro
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| 174 |
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| 175 | ;--------------------------------------------------------------------
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| 176 | ; DISABLE_SDP
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| 177 | ; Parameters:
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| 178 | ; %1: Offset for first command byte
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| 179 | ; %2: Offset for second command byte
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| 180 | ; DS: Segment to beginning of EEPROM
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| 181 | ; Returns:
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| 182 | ; Nothing
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| 183 | ; Corrupts registers:
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| 184 | ; Nothing
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| 185 | ;--------------------------------------------------------------------
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| 186 | %macro DISABLE_SDP 2
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| 187 | mov BYTE [%1], 0AAh
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| 188 | mov BYTE [%2], 55h
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| 189 | mov BYTE [%1], 80h
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| 190 | mov BYTE [%1], 0AAh
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| 191 | mov BYTE [%2], 55h
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| 192 | mov BYTE [%1], 20h
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| 193 | %endmacro
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| 194 |
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| 195 | ;--------------------------------------------------------------------
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| 196 | ; SDP Command Functions
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| 197 | ; Parameters:
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| 198 | ; DS: Segment to beginning of EEPROM
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| 199 | ; Returns:
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| 200 | ; Nothing but jumps to WriteActualDataByteAfterSdpCommand
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| 201 | ; Corrupts registers:
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| 202 | ; Nothing
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| 203 | ;--------------------------------------------------------------------
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| 204 | ALIGN JUMP_ALIGN
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| 205 | WriteSdpEnableCommandFor2816:
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| 206 | ENABLE_SDP 555h, 2AAh
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| 207 | jmp ReturnFromSdpCommand
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| 208 |
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| 209 | ALIGN JUMP_ALIGN
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| 210 | WriteSdpEnableCommandFor2864:
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| 211 | ENABLE_SDP 1555h, 0AAAh
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| 212 | jmp ReturnFromSdpCommand
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| 213 |
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| 214 | ALIGN JUMP_ALIGN
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| 215 | WriteSdpEnableCommandFor2864mod:
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| 216 | ENABLE_SDP 155Ch, 0AA3h
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| 217 | jmp ReturnFromSdpCommand
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| 218 |
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| 219 | ALIGN JUMP_ALIGN
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| 220 | WriteSdpEnableCommandFor28256or28512:
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| 221 | ENABLE_SDP 5555h, 2AAAh
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| 222 | jmp ReturnFromSdpCommand
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| 223 |
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| 224 |
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| 225 | ALIGN JUMP_ALIGN
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| 226 | WriteSdpDisableCommandFor2816:
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| 227 | DISABLE_SDP 555h, 2AAh
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| 228 | jmp SHORT ReturnFromSdpCommand
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| 229 |
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| 230 | ALIGN JUMP_ALIGN
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| 231 | WriteSdpDisableCommandFor2864:
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| 232 | DISABLE_SDP 1555h, 0AAAh
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| 233 | jmp SHORT ReturnFromSdpCommand
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| 234 |
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| 235 | ALIGN JUMP_ALIGN
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| 236 | WriteSdpDisableCommandFor2864mod:
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| 237 | DISABLE_SDP 155Ch, 0AA3h
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| 238 | jmp SHORT ReturnFromSdpCommand
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| 239 |
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| 240 | ALIGN JUMP_ALIGN
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| 241 | WriteSdpDisableCommandFor28256or28512:
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| 242 | DISABLE_SDP 5555h, 2AAAh
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| 243 | DoNotWriteAnySdpCommand:
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| 244 | jmp SHORT ReturnFromSdpCommand
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| 245 |
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| 246 |
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| 247 | ;--------------------------------------------------------------------
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| 248 | ; WriteNextChangedByteFromPageToEeprom
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| 249 | ; Parameters:
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| 250 | ; CX: Number of bytes left to write
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| 251 | ; DX: Offset to SDP command function
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| 252 | ; BX: Offset to next destination byte
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| 253 | ; SI: Offset to next source byte
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| 254 | ; ES:DI: Ptr to next comparison byte
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| 255 | ; SS:BP: Ptr to FLASHVARS
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| 256 | ; Returns:
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| 257 | ; CF: Set if polling timeout error
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| 258 | ; Cleared if page written successfully
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| 259 | ; Corrupts registers:
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| 260 | ; AX, BX, CX, SI, DI, DS, ES
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| 261 | ;--------------------------------------------------------------------
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| 262 | ALIGN JUMP_ALIGN
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| 263 | WriteAllChangedBytesFromPageToEeprom:
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| 264 | mov ax, [bp+FLASHVARS.fpNextSourcePage+2] ; AX = Source segment
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| 265 | mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS = EEPROM segment
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| 266 | cli ; Disable interrupts
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| 267 | jmp dx ; Write SDP command (once to the beginning of page)
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| 268 | ALIGN JUMP_ALIGN
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| 269 | ReturnFromSdpCommand:
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| 270 | mov ds, ax ; DS:SI now points to source byte
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| 271 |
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| 272 | ALIGN JUMP_ALIGN
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| 273 | .WriteActualDataByteAfterSdpCommand:
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| 274 | lodsb ; Load source byte to AL
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| 275 | scasb ; Compare source byte to comparison byte
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| 276 | je SHORT .NoChangesForThisByte
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| 277 |
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| 278 | mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS:BX now points to EEPROM
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| 279 | mov [bx], al ; Write byte to EEPROM
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| 280 | mov ds, [bp+FLASHVARS.fpNextSourcePage+2] ; Restore DS
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| 281 | mov [bp+FLASHVARS.wLastOffsetWritten], bx
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| 282 | mov [bp+FLASHVARS.bLastByteWritten], al
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| 283 |
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| 284 | ALIGN JUMP_ALIGN
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| 285 | .NoChangesForThisByte:
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| 286 | inc bx ; Increment destination offset
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| 287 | loop .WriteActualDataByteAfterSdpCommand
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| 288 | sti ; Enable interrupts
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| 289 | ; Fall to WaitUntilEepromPageWriteHasCompleted
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| 290 |
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| 291 |
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| 292 | ;--------------------------------------------------------------------
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| 293 | ; WaitUntilEepromPageWriteHasCompleted
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| 294 | ; Parameters:
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| 295 | ; SS:BP: Ptr to FLASHVARS
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| 296 | ; Returns:
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| 297 | ; CF: Set if polling timeout error
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| 298 | ; Cleared if page written successfully
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| 299 | ; Corrupts registers:
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| 300 | ; AX, BX, DI, DS, ES
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| 301 | ;--------------------------------------------------------------------
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| 302 | ALIGN JUMP_ALIGN
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| 303 | WaitUntilEepromPageWriteHasCompleted:
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| 304 | call .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP
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| 305 | mov es, [bp+FLASHVARS.fpNextDestinationPage+2]
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| 306 | mov di, [bp+FLASHVARS.wLastOffsetWritten]
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| 307 | ALIGN JUMP_ALIGN
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| 308 | .PollEeprom:
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| 309 | call .HasWriteCycleCompleted
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| 310 | je SHORT .PageWriteCompleted ; CF cleared
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| 311 | call TimerTicks_GetTimeoutTicksLeftToAXfromDSBX
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| 312 | jnc SHORT .PollEeprom
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| 313 | ALIGN JUMP_ALIGN
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| 314 | .PageWriteCompleted:
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| 315 | ret
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| 316 |
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| 317 | ;--------------------------------------------------------------------
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| 318 | ; .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP
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| 319 | ; Parameters:
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| 320 | ; SS:BP: Ptr to FLASHVARS
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| 321 | ; Returns:
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| 322 | ; DS:BX: Ptr to timeout counter variable
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| 323 | ; Corrupts registers:
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| 324 | ; AX
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| 325 | ;--------------------------------------------------------------------
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| 326 | ALIGN JUMP_ALIGN
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| 327 | .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP:
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| 328 | push ss
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| 329 | pop ds
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| 330 | lea bx, [bp+FLASHVARS.wTimeoutCounter]
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| 331 | mov ax, EEPROM_POLLING_TIMEOUT_TICKS
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| 332 | jmp TimerTicks_InitializeTimeoutFromAX
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| 333 |
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| 334 | ;--------------------------------------------------------------------
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| 335 | ; .HasWriteCycleCompleted
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| 336 | ; Parameters:
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| 337 | ; ES:DI: Ptr to last written byte in EEPROM
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| 338 | ; SS:BP: Ptr to FLASHVARS
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| 339 | ; Returns:
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| 340 | ; ZF: Set if write cycle has completed
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| 341 | ; Cleared if write cycle in progress
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| 342 | ; Corrupts registers:
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| 343 | ; AX
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| 344 | ;--------------------------------------------------------------------
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| 345 | ALIGN JUMP_ALIGN
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| 346 | .HasWriteCycleCompleted:
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| 347 | mov ah, [es:di] ; Load byte from EEPROM
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| 348 | mov al, [bp+FLASHVARS.bLastByteWritten]
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| 349 | and ax, 8080h ; Clear all but bit 7 from both bytes
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| 350 | cmp al, ah ; Set ZF if high bits are the same
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| 351 | ret
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| 352 |
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| 353 |
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| 354 | ;--------------------------------------------------------------------
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| 355 | ; DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP
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| 356 | ; Parameters:
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| 357 | ; CX: Number of pages left to flash
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| 358 | ; SS:BP: Ptr to FLASHVARS
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| 359 | ; Returns:
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| 360 | ; Nothing
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| 361 | ; Corrupts registers:
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| 362 | ; AX, DI
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| 363 | ;--------------------------------------------------------------------
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| 364 | ALIGN JUMP_ALIGN
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| 365 | DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP:
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| 366 | push bp
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| 367 |
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| 368 | mov ax, [bp+FLASHVARS.wPagesToFlash]
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| 369 | sub ax, cx
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| 370 | mov bp, [bp+FLASHVARS.wProgressUpdateParam] ; BP now has MENU handle
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| 371 | CALL_MENU_LIBRARY SetProgressValueFromAX
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| 372 |
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| 373 | pop bp
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| 374 | ret
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