forked from Apple-2-HW/AppleIISd
768 lines
32 KiB
Plaintext
768 lines
32 KiB
Plaintext
1 ********************************
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2 *
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3 * Apple][Sd Firmware
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4 * Version 0.6
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5 *
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6 * (c) Florian Reitz, 2017
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7 *
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8 * X register usually contains SLOT16
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9 * Y register is used for counting or SLOT
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10 *
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11 ********************************
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12
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27-AUG-17 14:47
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14
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15 XC ; enable 65C02 code
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16 DEBUG = 0
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17 DO DEBUG
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18 ORG $8000
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19 ELSE
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20 ORG $C800 ; Expansion ROM
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21 FIN
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22
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23 * Memory defines
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24
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25 SLOT16 = $2B ; $s0 -> slot * 16
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26 WORK = $3C
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27 SLOT = $3D ; $0s
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28 CMDLO = $40
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29 CMDHI = $41
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30
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31 CURSLOT = $07F8 ; $Cs
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32 DATA = $C080
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33 CTRL = DATA+1
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34 DIV = DATA+2
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35 SS = DATA+3
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36 R30 = $0478
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37 R31 = $04F8
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38 R32 = $0578
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39 R33 = $05F8
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40
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41 * Constants
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42
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43 DUMMY = $FF
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44 FRX = $10 ; CTRL register
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45 ECE = $04
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46 SS0 = $01 ; SS register
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47 WP = $20
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48 CARDDET = $40
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49 INITED = $80
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50
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51
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52 * signature bytes
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53
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C800: A2 20 54 LDX #$20
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C802: A0 00 55 LDY #$00
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C804: A2 03 56 LDX #$03
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C806: 86 3C 57 STX WORK
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58
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59 * find slot nr
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60
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61 DO DEBUG
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62 LDA #$04
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63 STA SLOT
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64 LDA #$C4
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65 STA CURSLOT
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66 LDA #$40
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67 STA SLOT16
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68 ELSE
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C808: 20 58 FF 69 JSR $FF58
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C80B: BA 70 TSX
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C80C: BD 00 01 71 LDA $0100,X
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C80F: 29 0F 72 AND #$0F
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C811: 85 3D 73 STA SLOT ; $0s
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C813: 09 C0 74 ORA #$C0
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C815: 8D F8 07 75 STA CURSLOT ; $Cs
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C818: 0A 76 ASL A
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C819: 0A 77 ASL A
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C81A: 0A 78 ASL A
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C81B: 0A 79 ASL A
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C81C: 85 2B 80 STA SLOT16 ; $s0
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81 FIN
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C81E: AA 82 TAX ; X holds now SLOT16
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83
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C81F: 2C FF CF 84 BIT $CFFF
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C822: 20 00 C9 85 JSR INIT
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86
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87 *
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88 * TODO: check for init error
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89 *
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90
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91 ********************************
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92 *
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93 * Install SD card driver
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94 *
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95 ********************************
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96
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97 DO DEBUG
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98
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99 * see if slot has a driver already
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100
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101 LDX $BF31 ; get devcnt
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102 INSTALL LDA $BF32,X ; get a devnum
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103 AND #$70 ; isolate slot
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104 CMP SLOT16 ; slot?
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105 BEQ :INSOUT ; yes, skip it
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106 DEX
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107 BPL INSTALL ; keep up the search
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108
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109 * restore the devnum to the list
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110
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111 LDX $BF31 ; get devcnt again
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112 CPX #$0D ; device table full?
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113 BNE :INST2
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114
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115 JSR $FF3A ; bell
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116 JMP :INSOUT ; do something!
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117
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118 :INST2 LDA $BF32-1,X ; move all entries down
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119 STA $BF32,X ; to make room at front
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120 DEX ; for a new entry
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121 BNE :INST2
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122 LDA #$04 ; ProFile type device
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123 ORA SLOT16
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124 STA $BF32 ; slot, drive 1 at top of list
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125 INC $BF31 ; update devcnt
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126
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127 * now insert the device driver vector
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128
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129 LDA SLOT
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130 ASL
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131 TAX
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132 LDA #<DRIVER
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133 STA $BF10,X ; write to driver table
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134 LDA #>DRIVER
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135 STA $BF11,X
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136 :INSOUT RTS
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137
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138
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139 ********************************
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140 *
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141 * Boot from SD card
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142 *
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143 ********************************
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144
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145 ELSE
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146
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C825: A9 01 147 BOOT LDA #$01
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C827: 85 42 148 STA $42 ; load command
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C829: A5 2B 149 LDA SLOT16
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C82B: AA 150 TAX
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C82C: 85 43 151 STA $43 ; slot number
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C82E: 64 44 152 STZ $44 ; buffer lo
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C830: A9 08 153 LDA #$08
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C832: 85 45 154 STA $45 ; buffer hi
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C834: 64 46 155 STZ $46 ; block lo
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C836: 64 47 156 STZ $47 ; block hi
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C838: 2C FF CF 157 BIT $CFFF
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C83B: 20 AD CA 158 JSR READ ; call driver
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C83E: 4C 01 08 159 JMP $801 ; goto bootloader
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160
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161 FIN
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162
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163
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164 ********************************
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165 *
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166 * Jump table
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167 *
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168 ********************************
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169
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C841: D8 170 DRIVER CLD
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171 DO DEBUG
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172 LDA #$04
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173 STA SLOT
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174 LDA #$C4
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175 STA CURSLOT
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176 LDA #$40
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177 STA SLOT16
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178 ELSE
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C842: 20 58 FF 179 JSR $FF58 ; find slot nr
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C845: BA 180 TSX
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C846: BD 00 01 181 LDA $0100,X
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C849: 29 0F 182 AND #$0F
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C84B: 85 3D 183 STA SLOT ; $0s
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C84D: 09 C0 184 ORA #$C0
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C84F: 8D F8 07 185 STA CURSLOT ; $Cs
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C852: 0A 186 ASL A
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C853: 0A 187 ASL A
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C854: 0A 188 ASL A
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C855: 0A 189 ASL A
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C856: 85 2B 190 STA SLOT16 ; $s0
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191 FIN
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C858: AA 192 TAX ; X holds now SLOT16
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193
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C859: 2C FF CF 194 BIT $CFFF
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C85C: A9 80 195 LDA #INITED ; check for init
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C85E: 3C 83 C0 196 BIT SS,X
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C861: F0 22 197 BEQ :INIT
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198
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C863: A5 42 199 :CMD LDA $42 ; get command
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C865: C9 00 200 CMP #$00
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C867: F0 10 201 BEQ :STATUS
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C869: C9 01 202 CMP #$01
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C86B: F0 0F 203 BEQ :READ
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C86D: C9 02 204 CMP #$02
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C86F: F0 0E 205 BEQ :WRITE
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C871: C9 03 206 CMP #$03
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C873: F0 0D 207 BEQ :FORMAT
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C875: 38 208 SEC ; unknown command
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C876: A9 01 209 LDA #$01
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C878: 60 210 RTS
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211
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C879: 4C A5 CA 212 :STATUS JMP STATUS
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C87C: 4C AD CA 213 :READ JMP READ
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C87F: 4C 15 CB 214 :WRITE JMP WRITE
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C882: 4C 8B CB 215 :FORMAT JMP FORMAT
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C885: 20 00 C9 216 :INIT JSR INIT
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C888: 80 D9 217 BRA :CMD
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218
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219
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220 * Signature bytes
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221
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C88A: 00 00 00 222 DS \ ; fill with zeroes
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C88D: 00 00 00 00
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C891: 00 00 00 00
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C895: 00 00 00 00
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C899: 00 00 00 00
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C89D: 00 00 00 00
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C8A1: 00 00 00 00
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C8A5: 00 00 00 00
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C8A9: 00 00 00 00
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C8AD: 00 00 00 00
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C8B1: 00 00 00 00
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C8B5: 00 00 00 00
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C8B9: 00 00 00 00
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C8BD: 00 00 00 00
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C8C1: 00 00 00 00
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C8C5: 00 00 00 00
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C8C9: 00 00 00 00
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C8CD: 00 00 00 00
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C8D1: 00 00 00 00
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C8D5: 00 00 00 00
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C8D9: 00 00 00 00
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C8DD: 00 00 00 00
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C8E1: 00 00 00 00
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C8E5: 00 00 00 00
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C8E9: 00 00 00 00
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C8ED: 00 00 00 00
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C8F1: 00 00 00 00
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C8F5: 00 00 00 00
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C8F9: 00 00 00 00
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C8FD: 00 00 00
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223 DS -4 ; locate to $xxFC
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C8FC: FF FF 224 DW $FFFF ; 65535 blocks
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C8FE: 47 225 DB $47 ; Status bits
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C8FF: 41 226 DB #<DRIVER ; LSB of driver
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227
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228
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229 ********************************
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230 *
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231 * Initialize SD card
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232 *
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233 * C Clear - No error
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234 * Set - Error
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235 * A $00 - No error
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236 * $27 - I/O error - Init failed
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237 * $28 - No card inserted
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238 *
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239 ********************************
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240
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C900: D8 241 INIT CLD
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C901: A9 03 242 LDA #$03 ; set SPI mode 3
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C903: 9D 81 C0 243 STA CTRL,X
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C906: BD 83 C0 244 LDA SS,X
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C909: 09 01 245 ORA #SS0 ; set CS high
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C90B: 9D 83 C0 246 STA SS,X
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C90E: A9 07 247 LDA #7
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C910: 9D 82 C0 248 STA DIV,X
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C913: A0 0A 249 LDY #10
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C915: A9 FF 250 LDA #DUMMY
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251
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C917: 9D 80 C0 252 :LOOP STA DATA,X
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C91A: 3C 81 C0 253 :WAIT BIT CTRL,X
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C91D: 10 FB 254 BPL :WAIT
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C91F: 88 255 DEY
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C920: D0 F5 256 BNE :LOOP ; do 10 times
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C922: BD 83 C0 257 LDA SS,X
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C925: 29 FE 258 AND #$FF!SS0 ; set CS low
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C927: 9D 83 C0 259 STA SS,X
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260
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C92A: A9 8F 261 LDA #<CMD0 ; send CMD0
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C92C: 85 40 262 STA CMDLO
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C92E: A9 CB 263 LDA #>CMD0
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C930: 85 41 264 STA CMDHI
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C932: 20 F2 C9 265 JSR CMD
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C935: 20 06 CA 266 JSR GETR1 ; get response
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C938: C9 01 267 CMP #$01
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C93A: D0 39 268 BNE :ERROR1 ; error!
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269
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C93C: A9 9B 270 LDA #<CMD8 ; send CMD8
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C93E: 85 40 271 STA CMDLO
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C940: A9 CB 272 LDA #>CMD8
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C942: 85 41 273 STA CMDHI
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C944: 20 F2 C9 274 JSR CMD
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C947: 20 21 CA 275 JSR GETR3
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C94A: C9 01 276 CMP #$01
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C94C: D0 2A 277 BNE :SDV1 ; may be SD Ver. 1
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278
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279 * check for $01aa match!
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C94E: A9 A7 280 :SDV2 LDA #<CMD55
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C950: 85 40 281 STA CMDLO
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C952: A9 CB 282 LDA #>CMD55
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C954: 85 41 283 STA CMDHI
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C956: 20 F2 C9 284 JSR CMD
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C959: 20 06 CA 285 JSR GETR1
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C95C: A9 AD 286 LDA #<ACMD4140
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C95E: 85 40 287 STA CMDLO
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C960: A9 CB 288 LDA #>ACMD4140
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C962: 85 41 289 STA CMDHI
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C964: 20 F2 C9 290 JSR CMD
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C967: 20 06 CA 291 JSR GETR1
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C96A: C9 01 292 CMP #$01
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C96C: F0 E0 293 BEQ :SDV2 ; wait for ready
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C96E: C9 00 294 CMP #$00
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C970: D0 03 295 BNE :ERROR1 ; error!
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296 * send CMD58
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297 * SD Ver. 2 initialized!
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C972: 4C B2 C9 298 JMP :BLOCKSZ
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299
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C975: 4C E0 C9 300 :ERROR1 JMP :IOERROR ; needed for far jump
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301
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C978: A9 A7 302 :SDV1 LDA #<CMD55
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C97A: 85 40 303 STA CMDLO
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C97C: A9 CB 304 LDA #>CMD55
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C97E: 85 41 305 STA CMDHI
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C980: 20 F2 C9 306 JSR CMD ; ignore response
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C983: A9 B3 307 LDA #<ACMD410
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C985: 85 40 308 STA CMDLO
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C987: A9 CB 309 LDA #>ACMD410
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C989: 85 41 310 STA CMDHI
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C98B: 20 F2 C9 311 JSR CMD
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C98E: 20 06 CA 312 JSR GETR1
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C991: C9 01 313 CMP #$01
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C993: F0 E3 314 BEQ :SDV1 ; wait for ready
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C995: C9 00 315 CMP #$00
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C997: D0 03 316 BNE :MMC ; may be MMC card
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317 * SD Ver. 1 initialized!
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C999: 4C B2 C9 318 JMP :BLOCKSZ
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319
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C99C: A9 95 320 :MMC LDA #<CMD1
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C99E: 85 40 321 STA CMDLO
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C9A0: A9 CB 322 LDA #>CMD1
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C9A2: 85 41 323 STA CMDHI
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C9A4: 20 F2 C9 324 :LOOP1 JSR CMD
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C9A7: 20 06 CA 325 JSR GETR1
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C9AA: C9 01 326 CMP #$01
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C9AC: F0 F6 327 BEQ :LOOP1 ; wait for ready
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C9AE: C9 00 328 CMP #$00
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C9B0: D0 2E 329 BNE :IOERROR ; error!
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330 * MMC Ver. 3 initialized!
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331
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C9B2: A9 A1 332 :BLOCKSZ LDA #<CMD16
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C9B4: 85 40 333 STA CMDLO
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C9B6: A9 CB 334 LDA #>CMD16
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C9B8: 85 41 335 STA CMDHI
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C9BA: 20 F2 C9 336 JSR CMD
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C9BD: 20 06 CA 337 JSR GETR1
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C9C0: C9 00 338 CMP #$00
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C9C2: D0 1C 339 BNE :IOERROR ; error!
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340
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C9C4: A4 3D 341 :END LDY SLOT
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C9C6: BD 83 C0 342 LDA SS,X
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C9C9: 09 80 343 ORA #INITED ; initialized
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C9CB: 9D 83 C0 344 STA SS,X
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C9CE: BD 81 C0 345 LDA CTRL,X
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C9D1: 09 04 346 ORA #ECE ; enable 7MHz
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C9D3: 9D 81 C0 347 STA CTRL,X
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C9D6: 18 348 CLC ; all ok
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C9D7: A0 00 349 LDY #0
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C9D9: 90 08 350 BCC :END1
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C9DB: 38 351 :CDERROR SEC
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C9DC: A0 28 352 LDY #$28 ; no card error
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C9DE: B0 03 353 BCS :END1
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C9E0: 38 354 :IOERROR SEC
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C9E1: A0 27 355 LDY #$27 ; init error
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C9E3: BD 83 C0 356 :END1 LDA SS,X ; set CS high
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C9E6: 09 01 357 ORA #SS0
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C9E8: 9D 83 C0 358 STA SS,X
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C9EB: A9 00 359 LDA #0 ; set div to 2
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C9ED: 9D 82 C0 360 STA DIV,X
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C9F0: 98 361 TYA ; retval in A
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C9F1: 60 362 RTS
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363
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364
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365 ********************************
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366 *
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367 * Send SD command
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368 * Call with command in CMDHI and CMDLO
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369 *
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370 ********************************
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371
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C9F2: 5A 372 CMD PHY
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C9F3: A0 00 373 LDY #0
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C9F5: B1 40 374 :LOOP LDA (CMDLO),Y
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C9F7: 9D 80 C0 375 STA DATA,X
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C9FA: 3C 81 C0 376 :WAIT BIT CTRL,X ; TC is in N
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C9FD: 10 FB 377 BPL :WAIT
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C9FF: C8 378 INY
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CA00: C0 06 379 CPY #6
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CA02: 90 F1 380 BCC :LOOP
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CA04: 7A 381 PLY
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CA05: 60 382 RTS
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383
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384
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385 ********************************
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386 *
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387 * Get R1
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388 * R1 is in A
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389 *
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390 ********************************
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391
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CA06: A9 FF 392 GETR1 LDA #DUMMY
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CA08: 9D 80 C0 393 STA DATA,X
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CA0B: 3C 81 C0 394 :WAIT BIT CTRL,X
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CA0E: 10 FB 395 BPL :WAIT
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CA10: BD 80 C0 396 LDA DATA,X ; get response
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CA13: 85 3C 397 STA WORK ; save R1
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CA15: 29 80 398 AND #$80
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CA17: D0 ED 399 BNE GETR1 ; wait for MSB=0
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CA19: A9 FF 400 LDA #DUMMY
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CA1B: 9D 80 C0 401 STA DATA,X ; send another dummy
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CA1E: A5 3C 402 LDA WORK ; restore R1
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CA20: 60 403 RTS
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404
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405
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406 ********************************
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407 *
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408 * Get R3
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409 * R1 is in A
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410 * R3 is in scratchpad ram
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411 *
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412 ********************************
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413
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CA21: 20 06 CA 414 GETR3 JSR GETR1 ; get R1 first
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CA24: 48 415 PHA ; save R1
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CA25: 5A 416 PHY ; save Y
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CA26: A0 04 417 LDY #04 ; load counter
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CA28: A9 FF 418 :LOOP LDA #DUMMY ; send dummy
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CA2A: 9D 80 C0 419 STA DATA,X
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CA2D: 3C 81 C0 420 :WAIT BIT CTRL,X
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CA30: 10 FB 421 BPL :WAIT
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CA32: BD 80 C0 422 LDA DATA,X
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CA35: 48 423 PHA
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CA36: 88 424 DEY
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CA37: D0 EF 425 BNE :LOOP ; do 4 times
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CA39: A4 3D 426 LDY SLOT
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CA3B: 68 427 PLA
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CA3C: 99 F8 05 428 STA R33,Y ; save R3
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CA3F: 68 429 PLA
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CA40: 99 78 05 430 STA R32,Y
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CA43: 68 431 PLA
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CA44: 99 F8 04 432 STA R31,Y
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CA47: 68 433 PLA
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CA48: 99 78 04 434 STA R30,Y
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CA4B: 7A 435 PLY ; restore Y
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CA4C: A9 FF 436 LDA #DUMMY
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CA4E: 9D 80 C0 437 STA DATA,X ; send another dummy
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CA51: 68 438 PLA ; restore R1
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CA52: 60 439 RTS
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440
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441
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442 ********************************
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443 *
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444 * Calculate block address
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445 * Block no is in $46-47
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||
446 * Address is in R30-R33
|
||
447 *
|
||
448 ********************************
|
||
449
|
||
CA53: DA 450 BLOCK PHX ; save X
|
||
CA54: 5A 451 PHY ; save Y
|
||
CA55: A6 3D 452 LDX SLOT
|
||
CA57: A5 46 453 LDA $46 ; store block num
|
||
CA59: 9D F8 05 454 STA R33,X ; in R30-R33
|
||
CA5C: A5 47 455 LDA $47
|
||
CA5E: 9D 78 05 456 STA R32,X
|
||
CA61: A9 00 457 LDA #0
|
||
CA63: 9D F8 04 458 STA R31,X
|
||
CA66: 9D 78 04 459 STA R30,X
|
||
460
|
||
CA69: A0 09 461 LDY #9 ; ASL can't be used with Y
|
||
CA6B: 1E F8 05 462 :LOOP ASL R33,X ; mul block num
|
||
CA6E: 3E 78 05 463 ROL R32,X ; by 512 to get
|
||
CA71: 3E F8 04 464 ROL R31,X ; real address
|
||
CA74: 3E 78 04 465 ROL R30,X
|
||
CA77: 88 466 DEY
|
||
CA78: D0 F1 467 BNE :LOOP
|
||
CA7A: 7A 468 PLY ; restore Y
|
||
CA7B: FA 469 PLX ; restore X
|
||
CA7C: 60 470 RTS
|
||
471
|
||
472
|
||
473 ********************************
|
||
474 *
|
||
475 * Send SD command
|
||
476 * Cmd is in A
|
||
477 *
|
||
478 ********************************
|
||
479
|
||
CA7D: 5A 480 COMMAND PHY ; save Y
|
||
CA7E: A4 3D 481 LDY SLOT
|
||
CA80: 9D 80 C0 482 STA DATA,X ; send command
|
||
CA83: B9 78 04 483 LDA R30,Y ; get arg from R30 on
|
||
CA86: 9D 80 C0 484 STA DATA,X
|
||
CA89: B9 F8 04 485 LDA R31,Y
|
||
CA8C: 9D 80 C0 486 STA DATA,X
|
||
CA8F: B9 78 05 487 LDA R32,Y
|
||
CA92: 9D 80 C0 488 STA DATA,X
|
||
CA95: B9 F8 05 489 LDA R33,Y
|
||
CA98: 9D 80 C0 490 STA DATA,X
|
||
CA9B: A9 FF 491 LDA #DUMMY
|
||
CA9D: 9D 80 C0 492 STA DATA,X ; dummy crc
|
||
CAA0: 20 06 CA 493 JSR GETR1
|
||
CAA3: 7A 494 PLY ; restore Y
|
||
CAA4: 60 495 RTS
|
||
496
|
||
497
|
||
498 ********************************
|
||
499 *
|
||
500 * Status request
|
||
501 * $43 Unit number DSSS000
|
||
502 * $44-45 Unused
|
||
503 * $46-47 Unused
|
||
504 *
|
||
505 * C Clear - No error
|
||
506 * Set - Error
|
||
507 * A $00 - No error
|
||
508 * $27 - I/O error
|
||
509 * $28 - No card inserted / no init
|
||
510 * $2B - Card write protected
|
||
511 * x - Blocks avail (low byte)
|
||
512 * y - Blocks avail (high byte)
|
||
513 *
|
||
514 ********************************
|
||
515
|
||
CAA5: 18 516 STATUS CLC ; no error
|
||
CAA6: A9 00 517 LDA #0
|
||
CAA8: A2 FF 518 LDX #$FF ; 32 MB partition
|
||
CAAA: A0 FF 519 LDY #$FF
|
||
CAAC: 60 520 RTS
|
||
521
|
||
522 * TODO: check for card detect and write protect!
|
||
523
|
||
524
|
||
525 ********************************
|
||
526 *
|
||
527 * Read 512 byte block
|
||
528 * $43 Unit number DSSS0000
|
||
529 * $44-45 Address (LO/HI) of buffer
|
||
530 * $46-47 Block number (LO/HI)
|
||
531 *
|
||
532 * C Clear - No error
|
||
533 * Set - Error
|
||
534 * A $00 - No error
|
||
535 * $27 - Bad block number
|
||
536 * $28 - No card inserted
|
||
537 *
|
||
538 ********************************
|
||
539
|
||
540 * TODO: check for card detect!
|
||
541
|
||
CAAD: 20 53 CA 542 READ JSR BLOCK ; calc block address
|
||
543
|
||
CAB0: BD 83 C0 544 LDA SS,X ; enable /CS
|
||
CAB3: 29 FE 545 AND #$FF!SS0
|
||
CAB5: 9D 83 C0 546 STA SS,X
|
||
CAB8: A9 51 547 LDA #$51 ; send CMD17
|
||
CABA: 20 7D CA 548 JSR COMMAND ; send command
|
||
549
|
||
CABD: C9 00 550 CMP #0 ; check for error
|
||
CABF: D0 48 551 BNE :ERROR
|
||
552
|
||
CAC1: A9 FF 553 :GETTOK LDA #DUMMY ; get data token
|
||
CAC3: 9D 80 C0 554 STA DATA,X
|
||
CAC6: BD 80 C0 555 LDA DATA,X ; get response
|
||
CAC9: C9 FE 556 CMP #$FE
|
||
CACB: D0 F4 557 BNE :GETTOK ; wait for $FE
|
||
558
|
||
CACD: A0 02 559 LDY #2 ; read data from card
|
||
CACF: BD 81 C0 560 LDA CTRL,X ; enable FRX
|
||
CAD2: 09 10 561 ORA #FRX
|
||
CAD4: 9D 81 C0 562 STA CTRL,X
|
||
CAD7: A9 FF 563 LDA #DUMMY
|
||
CAD9: 9D 80 C0 564 STA DATA,X
|
||
CADC: 64 3C 565 :LOOPY STZ WORK
|
||
CADE: BD 80 C0 566 :LOOPW LDA DATA,X
|
||
CAE1: 92 44 567 STA ($44)
|
||
CAE3: E6 44 568 INC $44
|
||
CAE5: D0 02 569 BNE :INW
|
||
CAE7: E6 45 570 INC $45 ; inc msb on page boundary
|
||
CAE9: E6 3C 571 :INW INC WORK
|
||
CAEB: D0 F1 572 BNE :LOOPW
|
||
CAED: 88 573 DEY
|
||
CAEE: D0 EC 574 BNE :LOOPY
|
||
575
|
||
CAF0: BD 81 C0 576 LDA CTRL,X ; disable FRX
|
||
CAF3: 29 EF 577 AND #$FF!FRX
|
||
CAF5: 9D 81 C0 578 STA CTRL,X
|
||
579
|
||
CAF8: A9 FF 580 :CRC LDA #DUMMY ; first crc byte has
|
||
CAFA: 9D 80 C0 581 STA DATA,X ; already been read
|
||
582
|
||
CAFD: BD 83 C0 583 LDA SS,X
|
||
CB00: 09 01 584 ORA #SS0
|
||
CB02: 9D 83 C0 585 STA SS,X ; disable /CS
|
||
CB05: 18 586 CLC ; no error
|
||
CB06: A9 00 587 LDA #$00
|
||
CB08: 60 588 RTS
|
||
589
|
||
CB09: BD 83 C0 590 :ERROR LDA SS,X
|
||
CB0C: 09 01 591 ORA #SS0
|
||
CB0E: 9D 83 C0 592 STA SS,X ; disable /CS
|
||
CB11: 38 593 SEC ; an error occured
|
||
CB12: A9 27 594 LDA #$27
|
||
CB14: 60 595 RTS
|
||
596
|
||
597
|
||
598 ********************************
|
||
599 *
|
||
600 * Write 512 byte block
|
||
601 * $43 Unit number DSSS000
|
||
602 * $44-45 Address (LO/HI) of buffer
|
||
603 * $46-47 Block number (LO/HI)
|
||
604 *
|
||
605 * C Clear - No error
|
||
606 * Set - Error
|
||
607 * A $00 - No error
|
||
608 * $27 - I/O error or bad block number
|
||
609 * $28 - No card inserted
|
||
610 * $2B - Card write protected
|
||
611 *
|
||
612 ********************************
|
||
613
|
||
614 * TODO: check for card detect and write protect!
|
||
615
|
||
CB15: 20 53 CA 616 WRITE JSR BLOCK ; calc block address
|
||
617
|
||
CB18: BD 83 C0 618 LDA SS,X ; enable /CS
|
||
CB1B: 29 FE 619 AND #$FF!SS0
|
||
CB1D: 9D 83 C0 620 STA SS,X
|
||
CB20: A9 58 621 LDA #$58 ; send CMD24
|
||
CB22: 20 7D CA 622 JSR COMMAND ; send command
|
||
623
|
||
CB25: C9 00 624 CMP #0 ; check for error
|
||
CB27: D0 4A 625 BNE :ERROR
|
||
626
|
||
CB29: A9 FF 627 LDA #DUMMY
|
||
CB2B: 9D 80 C0 628 STA DATA,X ; send dummy
|
||
CB2E: A9 FE 629 LDA #$FE
|
||
CB30: 9D 80 C0 630 STA DATA,X ; send data token
|
||
631
|
||
CB33: A0 02 632 LDY #2 ; send data to card
|
||
CB35: 64 3C 633 :LOOPY STZ WORK
|
||
CB37: B2 44 634 :LOOPW LDA ($44)
|
||
CB39: 9D 80 C0 635 STA DATA,X
|
||
CB3C: E6 44 636 INC $44
|
||
CB3E: D0 02 637 BNE :INW
|
||
CB40: E6 45 638 INC $45 ; inc msb on page boundary
|
||
CB42: E6 3C 639 :INW INC WORK
|
||
CB44: D0 F1 640 BNE :LOOPW
|
||
CB46: 88 641 DEY
|
||
CB47: D0 EC 642 BNE :LOOPY
|
||
643
|
||
CB49: 9D 80 C0 644 :CRC STA DATA,X ; send 2 dummy crc bytes
|
||
CB4C: 9D 80 C0 645 STA DATA,X
|
||
646
|
||
CB4F: 9D 80 C0 647 STA DATA,X ; get data response
|
||
CB52: BD 80 C0 648 LDA DATA,X
|
||
CB55: 29 1F 649 AND #$1F
|
||
CB57: C9 05 650 CMP #$05
|
||
CB59: D0 18 651 BNE :ERROR ; check for write error
|
||
652
|
||
CB5B: A9 FF 653 :WAIT6 LDA #DUMMY
|
||
CB5D: 9D 80 C0 654 STA DATA,X ; wait for write cycle
|
||
CB60: BD 80 C0 655 LDA DATA,X ; to complete
|
||
CB63: C9 00 656 CMP #$00
|
||
CB65: F0 F4 657 BEQ :WAIT6
|
||
658
|
||
CB67: BD 83 C0 659 LDA SS,X ; disable /CS
|
||
CB6A: 09 01 660 ORA #SS0
|
||
CB6C: 9D 83 C0 661 STA SS,X
|
||
CB6F: 18 662 CLC ; no error
|
||
CB70: A9 00 663 LDA #0
|
||
CB72: 60 664 RTS
|
||
665
|
||
CB73: A9 FF 666 :ERROR LDA #DUMMY
|
||
CB75: 9D 80 C0 667 STA DATA,X ; wait for write cycle
|
||
CB78: BD 80 C0 668 LDA DATA,X ; to complete
|
||
CB7B: C9 00 669 CMP #$00
|
||
CB7D: F0 F4 670 BEQ :ERROR
|
||
671
|
||
CB7F: BD 83 C0 672 LDA SS,X
|
||
CB82: 09 01 673 ORA #SS0
|
||
CB84: 9D 83 C0 674 STA SS,X ; disable /CS
|
||
CB87: 38 675 SEC ; an error occured
|
||
CB88: A9 27 676 LDA #$27
|
||
CB8A: 60 677 RTS
|
||
678
|
||
679
|
||
680 ********************************
|
||
681 *
|
||
682 * Format
|
||
683 * not supported!
|
||
684 *
|
||
685 ********************************
|
||
686
|
||
CB8B: 38 687 FORMAT SEC
|
||
CB8C: A9 01 688 LDA #$01 ; invalid command
|
||
CB8E: 60 689 RTS
|
||
690
|
||
691
|
||
CB8F: 40 00 00 692 CMD0 HEX 400000
|
||
CB92: 00 00 95 693 HEX 000095
|
||
CB95: 41 00 00 694 CMD1 HEX 410000
|
||
CB98: 00 00 F9 695 HEX 0000F9
|
||
CB9B: 48 00 00 696 CMD8 HEX 480000
|
||
CB9E: 01 AA 87 697 HEX 01AA87
|
||
CBA1: 50 00 00 698 CMD16 HEX 500000
|
||
CBA4: 02 00 FF 699 HEX 0200FF
|
||
CBA7: 77 00 00 700 CMD55 HEX 770000
|
||
CBAA: 00 00 65 701 HEX 000065
|
||
CBAD: 69 40 00 702 ACMD4140 HEX 694000
|
||
CBB0: 00 00 77 703 HEX 000077
|
||
CBB3: 69 00 00 704 ACMD410 HEX 690000
|
||
CBB6: 00 00 FF 705 HEX 0000FF
|
||
|
||
|
||
--End assembly, 953 bytes, Errors: 0
|
||
|
||
|
||
Symbol table - alphabetical order:
|
||
|
||
ACMD410 =$CBB3 ACMD4140=$CBAD BLOCK =$CA53 ? BOOT =$C825
|
||
? CARDDET =$40 CMD =$C9F2 CMD0 =$CB8F CMD1 =$CB95
|
||
CMD16 =$CBA1 CMD55 =$CBA7 CMD8 =$CB9B CMDHI =$41
|
||
CMDLO =$40 COMMAND =$CA7D CTRL =$C081 CURSLOT =$07F8
|
||
DATA =$C080 DEBUG =$00 DIV =$C082 DRIVER =$C841
|
||
DUMMY =$FF ECE =$04 FORMAT =$CB8B FRX =$10
|
||
GETR1 =$CA06 GETR3 =$CA21 INIT =$C900 INITED =$80
|
||
R30 =$0478 R31 =$04F8 R32 =$0578 R33 =$05F8
|
||
READ =$CAAD SLOT =$3D SLOT16 =$2B SS =$C083
|
||
SS0 =$01 STATUS =$CAA5 WORK =$3C ? WP =$20
|
||
WRITE =$CB15
|
||
|
||
|
||
Symbol table - numerical order:
|
||
|
||
DEBUG =$00 SS0 =$01 ECE =$04 FRX =$10
|
||
? WP =$20 SLOT16 =$2B WORK =$3C SLOT =$3D
|
||
CMDLO =$40 ? CARDDET =$40 CMDHI =$41 INITED =$80
|
||
DUMMY =$FF R30 =$0478 R31 =$04F8 R32 =$0578
|
||
R33 =$05F8 CURSLOT =$07F8 DATA =$C080 CTRL =$C081
|
||
DIV =$C082 SS =$C083 ? BOOT =$C825 DRIVER =$C841
|
||
INIT =$C900 CMD =$C9F2 GETR1 =$CA06 GETR3 =$CA21
|
||
BLOCK =$CA53 COMMAND =$CA7D STATUS =$CAA5 READ =$CAAD
|
||
WRITE =$CB15 FORMAT =$CB8B CMD0 =$CB8F CMD1 =$CB95
|
||
CMD8 =$CB9B CMD16 =$CBA1 CMD55 =$CBA7 ACMD4140=$CBAD
|
||
ACMD410 =$CBB3
|
||
|