forked from Apple-2-HW/AppleIISd
784 lines
35 KiB
Plaintext
784 lines
35 KiB
Plaintext
1 ********************************
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2 *
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3 * Apple][Sd Firmware
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4 * Version 0.5
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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 iss used for counting or SLOT
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10 *
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11 ********************************
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12
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12-AUG-17 15::51
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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 INITED = $0678
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41
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42 * Constants
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43
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44 SSNONE = $0F
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45 SS0 = $0E
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46 DUMMY = $FF
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47
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48
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49 ********************************
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50 *
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51 * Install SD card driver
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52 *
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53 ********************************
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54
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55 * signature bytes
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56
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C800: A2 20 57 LDX #$20
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C802: A0 00 58 LDY #$00
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C804: A2 03 59 LDX #$03
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===== Page 2 =====
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C806: 86 3C 60 STX WORK
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61
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62 * find slot nr
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63
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64 DO DEBUG
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65 LDA #$04
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66 STA SLOT
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67 LDA #$C4
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68 STA CURSLOT
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69 LDA #$40
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70 STA SLOT16
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71 ELSE
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C808: 20 58 FF 72 JSR $FF58
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C80B: BA 73 TSX
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C80C: BD 00 01 74 LDA $0100,X
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C80F: 8D F8 07 75 STA CURSLOT ; $Cs
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C812: 29 0F 76 AND #$0F
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C814: 85 3D 77 STA SLOT ; $0s
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C816: 0A 78 ASL A
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C817: 0A 79 ASL A
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C818: 0A 80 ASL A
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C819: 0A 81 ASL A
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C81A: 85 2B 82 STA SLOT16 ; $s0
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83 FIN
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C81C: AA 84 TAX ; X holds now SLOT16
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85
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C81D: 2C FF CF 86 BIT $CFFF
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C820: 20 00 C9 87 JSR INIT
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88
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89 DO 0
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90 *
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91 * TODO: check for init error
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92 *
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93
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94 * see if slot has a driver already
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95
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96 LDX $BF31 ; get devcnt
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97 INSLP LDA $BF32,X ; get a devnum
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98 AND #$70 ; isolate slot
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99 CMP SLOT16 ; slot?
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100 BEQ INSOUT ; yes, skip it
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101 DEX
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102 BPL INSLP ; keep up the search
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103
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104 * restore the devnum to the list
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105
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106 LDX $BF31 ; get devcnt again
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107 CPX #$0D ; device table full?
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108 BNE INSLP2
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109
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110 JSR $FF3A ; bell
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111 JMP INSOUT ; do something!
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112
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113 INSLP2 LDA $BF32-1,X ; move all entries down
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114 STA $BF32,X ; to make room at front
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115 DEX ; for a new entry
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116 BNE INSLP2
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===== Page 3 =====
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117 LDA #$04 ; ProFile type device
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118 ORA SLOT16
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119 STA $BF32 ; slot, drive 1 at top of list
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120 INC $BF31 ; update devcnt
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121
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122 * now insert the device driver vector
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123
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124 LDA SLOT
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125 ASL
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126 TAX
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127 LDA #<DRIVER
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128 STA $BF10,X ; write to driver table
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129 DO DEBUG
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130 LDA #>DRIVER
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131 ELSE
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132 LDA CURSLOT
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133 FIN
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134 STA $BF11,X
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135
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136 INSOUT RTS
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137 FIN
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138
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C823: A9 01 139 BOOT LDA #$01
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C825: 85 42 140 STA $42 ; load command
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C827: A5 2B 141 LDA SLOT16
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C829: AA 142 TAX
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C82A: 85 43 143 STA $43 ; slot number
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C82C: 64 44 144 STZ $44 ; buffer lo
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C82E: A9 08 145 LDA #$08
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C830: 85 45 146 STA $45 ; buffer hi
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C832: 64 46 147 STZ $46 ; block lo
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C834: 64 47 148 STZ $47 ; block hi
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C836: 2C FF CF 149 BIT $CFFF
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C839: 20 B7 CA 150 JSR READ ; call driver
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C83C: 4C 01 08 151 JMP $801 ; goto bootloader
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152
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153
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154 ********************************
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155 *
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156 * Jump table
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157 *
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158 ********************************
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159
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C83F: D8 160 DRIVER CLD
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161 DO DEBUG
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162 LDA #$04
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163 STA SLOT
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164 LDA #$C4
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165 STA CURSLOT
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166 LDA #$40
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167 STA SLOT16
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168 ELSE
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C840: 20 58 FF 169 JSR $FF58 ; find slot nr
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C843: BA 170 TSX
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C844: BD 00 01 171 LDA $0100,X
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C847: 8D F8 07 172 STA CURSLOT ; $Cs
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C84A: 29 0F 173 AND #$0F
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===== Page 4 =====
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C84C: 85 3D 174 STA SLOT ; $0s
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C84E: 0A 175 ASL A
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C84F: 0A 176 ASL A
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C850: 0A 177 ASL A
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C851: 0A 178 ASL A
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C852: 85 2B 179 STA SLOT16 ; $s0
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180 FIN
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C854: AA 181 TAX ; X holds now SLOT16
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182
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C855: 2C FF CF 183 BIT $CCFF
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C858: A4 3D 184 LDY SLOT
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C85A: B9 78 06 185 LDA INITED,Y ; check for init
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C85D: C9 01 186 CMP #$01
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C85F: 90 22 187 BCC :INIT
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C861: A5 42 188 :CMD LDA $42 ; get command
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C863: C9 90 189 CMP #$00
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C865: F0 10 190 BEQ :STATUS
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C867: C9 01 191 CMP #$01
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C869: F0 0F 192 BEQ :READ
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C86B: C9 02 193 CMP #$02
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C86D: F0 0E 194 BEQ :WRITE
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C86F: C9 03 195 CMP #$03
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C871: F0 0D 196 BEQ :FORMAT
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C873: 38 197 SEC ; unknown command
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C874: A9 01 198 LDA #$01
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C876: 60 199 RTS
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200
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C877: 4C AF CA 201 :STATUS JMP STATUS
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C87A: 4C B7 CA 202 :READ JMP READ
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C87D: 4C 01 CB 203 :WRITE JMP WRITE
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C880: 4C 91 CB 204 :FORMAT JMP FORMAT
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C883: 20 00 C9 205 :INIT JSR INIT
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C886: 80 D9 206 BRA :CMD
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207
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208 * Signature bytes
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209
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C888: 00 00 00 210 DS \ ; fill with zeroes
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C88B: 00 00 00 00
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C88F: 00 00 00 00
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C893: 00 00 00 00
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C897: 00 00 00 00
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C89B: 00 00 00 00
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C89F: 00 00 00 00
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C8A3: 00 00 00 00
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C8A7: 00 00 00 00
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C8AB: 00 00 00 00
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C8AF: 00 00 00 00
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C8B3: 00 00 00 00
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C8B7: 00 00 00 00
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C8BB: 00 00 00 00
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C8BF: 00 00 00 00
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C8C3: 00 00 00 00
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C8C7: 00 00 00 00
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C8CB: 00 00 00 00
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C8CF: 00 00 00 00
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C8D3: 00 00 00 00
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C8D7: 00 00 00 00
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===== Page 5 =====
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C8DB: 00 00 00 00
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C8DF: 00 00 00 00
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C8E3: 00 00 00 00
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C8E7: 00 00 00 00
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C8EB: 00 00 00 00
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C8EF: 00 00 00 00
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C8F3: 00 00 00 00
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C8F7: 00 00 00 00
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C8FB: 00 00 00 00
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C8FF: 00
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211 DS -4 ; locate to $C8FC
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C8FC: FF FF 212 DW $FFFF ; 65535 blocks
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C8FE: 47 213 DB $47 ; Status bits
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C8FF: 3F 214 DB #<DRIVER ; LSB of driver
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215
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216
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217 ********************************
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218 *
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219 * Initialize SD card
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220 *
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221 * C Clear - No error
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222 * Set - Error
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223 * A $00 - No error
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224 * $27 - I/O error - Init failed
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225 * $28 - No card inserted
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226 *
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227 ********************************
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228
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C900: D8 229 INIT CLD
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C901: A9 03 230 LDA #$03 ; set SPI mode 3
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C903: 9D 81 C0 231 STA CTRL,X
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C906: A9 0F 232 LDA #SSNONE
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C908: 9D 83 C0 233 STA SS,X
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C90B: A9 07 234 LDA #7
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C90D: 9D 82 C0 235 STA DIV,X
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C910: A0 0A 236 LDY #10
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C912: A9 FF 237 LDA #DUMMY
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238
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C914: 9D 80 C0 239 :LOOP STA DATA,X
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C917: 3C 81 C0 240 :WAIT BIT CTRL,X
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C91A: 10 FB 241 BPL :WAIT
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C91C: 88 242 DEY
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C91D: D0 F5 243 BNE :LOOP ; do 10 times
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C91F: A9 0E 244 LDA #SS0 ; set CS low
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C921: 9D 83 C0 245 STA SS,X
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246
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C924: A9 95 247 LDA #<CMD0 ; send CMD0
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C926: 85 40 248 STA CMDLO
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C928: A9 CB 249 LDA #>CMD0
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C92A: 85 41 250 STA CMDHI
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C92C: 20 DE C9 251 JSR CMD
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C92F: 20 F2 C9 252 JSR GETR1 ; get response
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C932: C9 01 253 CMP #$01
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C934: D0 39 254 BNE :ERROR1 ; error!
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255
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C936: A9 A1 256 LDA #<CMD8 ; send CMD8
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C938: 85 40 257 STA CMDLO
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===== Page 6 =====
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C93A: A9 CB 258 LDA #>CMD8
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C93C: 85 41 259 STA CMDHI
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C93E: 20 DE C9 260 JSR CMD
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C941: 20 0D CA 261 JSR GETR3
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C944: C9 01 262 CMP #$01
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C946: D0 2A 263 BNE :SDV1 ; may be SD Ver. 1
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264
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265 * check for $01aa match!
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C948: A9 AD 266 :SDV2 LDA #<CMD55
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C94A: 85 40 267 STA CMDLO
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C94C: A9 CB 268 LDA #>CMD55
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C94E: 85 41 269 STA CMDHI
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C950: 20 DE C9 270 JSR CMD
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C953: 20 F2 C9 271 JSR GETR1
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C956: A9 B3 272 LDA #<ACMD4140
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C958: 85 40 273 STA CMDLO
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C95A: A9 CB 274 LDA #>ACMD4140
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C95C: 85 41 275 STA CMDHI
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C95E: 20 DE C9 276 JSR CMD
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C961: 20 F2 C9 277 JSR GETR1
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C964: C9 01 278 CMP #$01
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C966: F0 E0 279 BEQ :SDV2 ; wait for ready
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C968: C9 00 280 CMP #$00
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C96A: D0 03 281 BNE :ERROR1 ; error!
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282 * send CMD58
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283 * SD Ver. 2 initialized!
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C96C: 4C AC C9 284 JMP :BLOCKSZ
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285
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C96F: 4C CF C9 286 :ERROR1 JMP :IOERROR ; needed for far jump
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287
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C972: A9 AD 288 :SDV1 LDA #<CMD55
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C974: 85 40 289 STA CMDLO
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C976: A9 CB 290 LDA #>CMD55
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C978: 85 41 291 STA CMDHI
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C97A: 20 DE C9 292 JSR CMD ; ignore response
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C97D: A9 B9 293 LDA #<ACMD410
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C97F: 85 40 294 STA CMDLO
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C981: A9 CB 295 LDA #>ACMD410
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C983: 85 41 296 STA CMDHI
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C985: 20 DE C9 297 JSR CMD
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C988: 20 F2 C9 298 JSR GETR1
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C98B: C9 01 299 CMP #$01
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C98D: F0 E3 300 BEQ :SDV1 ; wait for ready
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C98F: C9 00 301 CMP #$00
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C991: D0 03 302 BNE :MMC ; may be MMC card
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303 * SD Ver. 1 initialized!
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C993: 4C AC C9 304 JMP :BLOCKSZ
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305
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C996: A9 9B 306 :MMC LDA #<CMD1
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C998: 85 40 307 STA CMDLO
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C99A: A9 CB 308 LDA #>CMD1
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C99C: 85 41 309 STA CMDHI
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C99E: 20 DE C9 310 :LOOP1 JSR CMD
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C9A1: 20 F2 C9 311 JSR GETR1
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C9A4: C9 01 312 CMP #$01
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C9A6: F0 F6 313 BEQ :LOOP1 ; wait for ready
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C9A8: C9 00 314 CMP #$00
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===== Page 7 =====
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C9AA: D0 23 315 BNE :IOERROR ; error!
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316 * MMC Ver. 3 initialized!
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317
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C9AC: A9 A7 318 :BLOCKSZ LDA #<CMD16
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C9AE: 85 40 319 STA CMDLO
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C9B0: A9 CB 320 LDA #>CMD16
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C9B2: 85 41 321 STA CMDHI
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C9B4: 20 DE C9 322 JSR CMD
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C9B7: 20 F2 C9 323 JSR GETR1
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C9BA: C9 00 324 CMP #$00
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C9BC: D0 11 325 BNE :IOERROR ; error!
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326
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C9BE: A4 3D 327 :END LDY SLOT ; all ok
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C9C0: A9 01 328 LDA #$01
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C9C2: 99 78 06 329 STA INITED,Y ; initialized
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C9C5: 18 330 CLC
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C9C6: A0 00 331 LDY #0
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C9C8: 90 08 332 BCC :END1
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C9CA: 38 333 :CDERROR SEC
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C9CB: A0 28 334 LDY #$28 ; no card error
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C9CD: B0 03 335 BCS :END1
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C9CF: 38 336 :IOERROR SEC
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C9D0: A0 27 337 LDY #$27 ; init error
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C9D2: A9 0F 338 :END1 LDA #SSNONE ; deselect card
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C9D4: 9D 83 C0 339 STA SS,X
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C9D7: A9 00 340 LDA #0 ; set div to 2
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C9D9: 9D 82 C0 341 STA DIV,X
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C9DC: 98 342 TYA ; retval in A
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C9DD: 60 343 RTS
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344
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345
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346 ********************************
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347 *
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348 * Send SD command
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349 * Call with command in CMDHI and CMDLO
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350 *
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351 ********************************
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352
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C9DE: 5A 353 CMD PHY
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C9DF: A0 00 354 LDY #0
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C9E1: B1 40 355 :LOOP LDA (CMDLO),Y
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C9E3: 9D 80 C0 356 STA DATA,X
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C9E6: 3C 81 C0 357 :WAIT BIT CTRL,X ; TC is in N
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C9E9: 10 FB 358 BPL :WAIT
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C9EB: C8 359 INY
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C9EC: C0 06 360 CPY #6
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C9EE: 90 F1 361 BCC :LOOP
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C9F0: 7A 362 PLY
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C9F1: 60 363 RTS
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364
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365
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366 ********************************
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367 *
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368 * Get R1
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369 * R1 is in A
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370 *
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371 ********************************
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===== Page 8 =====
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372
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C9F2: A9 FF 373 GETR1 LDA #DUMMY
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C9F4: 9D 80 C0 374 STA DATA,X
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C9F7: 3C 81 C0 375 :WAIT BIT CTRL,X
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C9FA: 10 FB 376 BPL :WAIT
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C9FC: BD 80 C0 377 LDA DATA,X ; get response
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C9FF: 85 C 378 STA WORK ; save R1
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CA01: 29 80 379 AND #$80
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CA03: D0 ED 380 BNE GETR1 ; wait for MSB=0
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CA05: A9 FF 381 LDA #DUMMY
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CA07: 9D 80 C0 382 STT DATA,X ; send another dummy
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CA0A: A5 3C 383 LDA WORK ; restore R1
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CA0C: 60 384 RTS
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385
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386
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387 ********************************
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388 *
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389 * Get R3
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390 * R1 is in A
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391 * R3 is in scratchpad ram
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392 *
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393 ********************************
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394
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CA0D: 20 F2 C9 395 GETR3 JSR GETR1 ; get R1 first
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CA10: 48 396 PHA ; save R1
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CA11: 5A 397 PHY ; save Y
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CA12: A0 04 398 LDY #04 ; load counter
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CA14: A9 FF 399 :LOOP LDA #DUMMY ; send dummy
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CA16: 9D 80 C0 400 STA DATA,X
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CA19: 3C 81 C0 401 :WAIT BIT CTRL,X
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CA1C: 10 FB 402 BPL :WAIT
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CA1E: BD 80 C0 403 LDA DATA,X
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CA21: 48 404 PHA
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CA22: 88 405 DEY
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CA23: D0 EF 406 BNE :LOOP ; do 4 times
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CA25: A4 3D 07 LDY SLOT
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CA27: 68 408 PLA
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CA28: 99 F8 05 409 STA R33,Y ; save R3
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CA2B: 68 410 PLA
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CA2C: 99 78 05 411 STA R32,Y
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CA2F: 68 412 PLA
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CA30: 99 F8 04 413 STA R31,Y
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CA33: 68 414 PLA
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CA34: 99 78 04 415 STA R30,,
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CA37: 7A 416 PLY ; restore Y
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CA38: A9 FF 417 LDA #DUMMY
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CA3A: 9D 80 C0 418 STA DATA,X ; send another dummy
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CA3D: 68 419 PLA ; restore R1
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CA3E: 60 420 RTS
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421
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422
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423 ********************************
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424 *
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425 * Calculate block address
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426 * Block no is in $46-47
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427 * Address is in R30-R33
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428 *
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===== Page 9 =====
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429 ********************************
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430
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CA3F: DA 431 BLOCK PHX ; save X
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CA40: 5A 432 PHY ; save Y
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CA41: A6 3D 433 LDX SLLT
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CA43: A5 46 434 LDA $46 ; store block num
|
||
CA45: 9D F8 05 435 STA R33,X ; in R30-R33
|
||
CA48: A5 47 436 LDA $47
|
||
CA4A: 9D 78 05 437 STA R32,X
|
||
CA4D: A9 00 438 LDA #0
|
||
CA4F: 9D F8 04 439 STA R31,X
|
||
CA52: 9D 78 04 440 STA R30,X
|
||
441
|
||
CA55: A0 09 442 LDY #9 ; ASL can't be used with Y
|
||
CA57: 1E F8 05 443 :LOOP ASL R33,X ; mul block num
|
||
CA5A: 3E 78 05 444 ROL R32,X ; by 512 to get
|
||
CA5D: 3E F8 04 445 ROL R31,X ; real address
|
||
CA60: 3E 78 04 446 ROL R30,X
|
||
CA63: 88 447 DEY
|
||
CA64: D0 F1 448 BNE :LOOP
|
||
CA66: 7A 449 PLY ; restore Y
|
||
CA67: FA 450 PLX ; restore X
|
||
CA68: 60 451 RTS
|
||
452
|
||
453
|
||
454 ********************************
|
||
455 *
|
||
456 * Send SD command
|
||
457 * Cmd is in A
|
||
458 *
|
||
459 ********************************
|
||
460
|
||
CA69: 5A 461 COMMAND PHY ; save Y
|
||
CA6A: A4 3D 462 LDY SLOT
|
||
CA6C::9D 80 C0 463 STA DATA,X ; send command
|
||
CA6F: 3C 81 C0 464 :WAIT BIT CTRL,X
|
||
CA72: 10 FB 465 BPL :WAIT
|
||
CA74: B9 78 04 466 :ARG LDA R30,Y ; get arg from R30 on
|
||
CA77: 9D 80 C0 467 STA DATA,X
|
||
CA7A: 3C 81 C0 468 :WAIT1 BIT CTRL,X
|
||
CA7D: 10 FB 469 BPL :WAIT1
|
||
CA7F: B9 F8 04 470 LDA R31,Y
|
||
CA82: 9D 80 C0 471 STA DATA,X
|
||
CA85: 3C 81 C0 472 :WAIT11 BIT CTRL,X
|
||
CA88: 10 FB 473 BPL :WAIT11
|
||
CA8A: B9 78 05 474 LDA R32,Y
|
||
CA8D: 9D 80 C0 475 STA DATA,X
|
||
CA90: 3C 81 C0 476 :WAIT12 BIT CTRL,X
|
||
CA93: 10 FB 477 BPL :WAIT12
|
||
CA95: B9 F8 05 478 LDA R33,Y
|
||
CA98: 9D 80 C0 479 STA DATA,X
|
||
CA9B: 3C 81 C0 480 :WAIT13 BIT CTRL,X
|
||
CA9E: 10 FB 481 BPL :WAIT13
|
||
CAA0: A9 FF 482 LDA #DUMMY
|
||
CAA2: 9D 80 C0 483 STA DATA,X ; dummy crc
|
||
CAA5: 3C 81 C0 484 :WAIT2 BIT CTRL,X
|
||
CAA8: 10 FB 485 BPL :WAIT2
|
||
===== Page 10 =====
|
||
|
||
CAAA: 20 F2 C9 486 JSR GETR1
|
||
CAAD: 7A 487 PLY ; restore Y
|
||
CAAE: 60 488 RTS
|
||
489
|
||
490
|
||
491 ********************************
|
||
492 *
|
||
493 * Status request
|
||
494 * $43 Unit number DSSS000
|
||
495 * $44-45 Unused
|
||
496 * $46-47 Unused
|
||
497 *
|
||
498 * C Clear - No error
|
||
499 * Set - Error
|
||
500 * A $00 - No error
|
||
501 * $27 - I/O error
|
||
502 * $28 - No card inserted / no init
|
||
503 * $2B - Card write protected
|
||
504 * x - Blocks avail (low byte)
|
||
505 * y - Blocks avail (high byte)
|
||
506 *
|
||
5077 ********************************
|
||
508
|
||
CAAF: 18 509 STATUS CLC ; no error
|
||
CAB0: A9 00 510 LDA #0
|
||
CAB2: A2 FF 511 LDX #$FF ; 32 MB partition
|
||
CAB4: A0 FF 512 LDY #$FF
|
||
CAB6: 60 513 RTS
|
||
514
|
||
515 * TODO: check for card detect and write protect!
|
||
516
|
||
517
|
||
518 ********************************
|
||
519 *
|
||
520 * Read 512 byte block
|
||
521 * $43 Unit number DSSS0000
|
||
522 * $44-455Address (LO/HI) of buffer
|
||
523 * $46-47 Block number (LO/HI)
|
||
524 *
|
||
525 * C Clear - No error
|
||
526 * Set - Error
|
||
527 * A $00 - No error
|
||
528 * $27 - Bad block number
|
||
529 * $28 - No card inserted
|
||
530 *
|
||
531 ********************************
|
||
532
|
||
533 * TODO: check for card detect!
|
||
534
|
||
CAB7: 20 3F CA 55 READ JSR BLOCK ; calc block address
|
||
536
|
||
CABA: A9 0E 537 LDA #SS0 ; enable /CS
|
||
CABC: 9D 83 C0 538 STA SS,X
|
||
CABF: A9 51 539 LDA #$51 ; send CMD17
|
||
CAC1: 22 69 CA 540 JSR COMMAND ; send command
|
||
|
||
541
|
||
CAC4: A9 FF 542 :GETTOK LDA #DUMMY ; get data token
|
||
===== Page 11 =====
|
||
|
||
CAC6: 9D 80 C0 543 STA DATA,X
|
||
CAC9: 3C 81 C0 544 :WAIT BIT CTRL,X
|
||
CACC: 10 FB 545 BPL :WAIT
|
||
CACE: BD 80 C0 546 LDA DATA,X ; get response
|
||
547 *
|
||
548 * TODO: check for error!
|
||
549 *
|
||
CAD1: C9 FE 550 CMP #$FE
|
||
CAD3: D0 EF 551 BNE :GETTOK ; wait for $FE
|
||
552
|
||
CAD5: A0 02 553 LDY #2 ; read dat from card
|
||
CAD7: 64 3C 554 :LOOPY STZ WORK
|
||
CAD9: A9 FF 555 :LOOPW LDA #DUMMY
|
||
CADB: 9D 80 CC 556 STA DATA,X
|
||
CADE: 3C 81 C0 557 :WAIT1 BIT CTRL,X
|
||
CAE1: 10 FB 558 BPL :WAIT1
|
||
CAE3: BD 80 C0 559 LDA DATA,X
|
||
CAE6: 92 44 560 STA ($44)
|
||
CAE8: E6 44 561 INC $44
|
||
CAEA: D0 02 562 BNE :INW
|
||
CAEC: E6 45 563 INC $45 ; inc msb on page boundary
|
||
CAEE: E6 3C 564 :INW INC WORK
|
||
CAF0: D0 E7 565 BNE :LOOPW
|
||
CAF2: 88 566 DEY
|
||
CAF3: D0 E2 567 BNE :LOOPY
|
||
568
|
||
CAF5: 20 0D CA 569 JSR GETR3 ; read 2 bytes crc
|
||
CAF8: A9 0F 570 LDA #SSNONE
|
||
CAFA: 9D 83 C0 571 STA SS,X ; disable /CS
|
||
CAFD: 18 572 CLC ; no error
|
||
CAFE: A9 00 573 LDA #$00
|
||
CB00: 60 574 RTS
|
||
575
|
||
576
|
||
577 ********************************
|
||
578 *
|
||
579 * Write 512 byte block
|
||
580 * $43 Unit number DSSS000
|
||
581 * $44-45 Address (LO/HI) of buffer
|
||
582 * $46-47 Block number (LO/HI)
|
||
583 *
|
||
584 * C Clear - No error
|
||
585 * Set - Error
|
||
586 * A $00 - No error
|
||
587 * $27 - I/O error or bad block number
|
||
588 * $28 - No card inserted
|
||
589 * $2B - Card write protected
|
||
590 *
|
||
591 ********************************
|
||
592
|
||
593 * TODO: check for card detect and write protect!
|
||
594
|
||
CB01: 20 3F CA 599 WRITE JSR BLOCK ; calc block address
|
||
596
|
||
CB04: A9 0E 597 LDA #SS0 ; enable /CS
|
||
CB06: 9D 83 C0 598 STA SS,X
|
||
CB09: A9 58 599 LDA #$58 ; send CMD24
|
||
===== Page 12 =====
|
||
|
||
CB0B: 20 69 CA 600 JSR COMMAND ; send command
|
||
601
|
||
CB00: A9 FF 602 LDA #DUMMY
|
||
CB10: 9D 80 C0 603 STA DATA,X ; send dummy
|
||
CB13: 3C 81 C0 604 :WAIT1 BIT CTRL,X
|
||
CB16: 10 FB 605 BPL :WAIT1
|
||
CB18: A9 FE 606 LDA #$FE
|
||
CB1A: 9D 80 C0 607 STA DATA,X ; send data token
|
||
CB1D: 3C 81 C0 608 :WAIT2 BIT CTRL,X
|
||
CB20: 10 FB 609 BPL :WAIT2
|
||
610
|
||
CB22: A0 02 611 LDY #2 ; send data to card
|
||
CB24: 64 3C 612 :LOOPY STZ WORK
|
||
CB26: B2 44 613 :LOOPW LDA ($44)
|
||
CB28: 9D 80 C0 614 STA DATA,X
|
||
CB2B: 3C 81 C0 615 :WAIT3 BIT CTRL,X
|
||
CB2E: 10 FB 616 BPL :WAIT3
|
||
CB30: E6 44 617 INC $44
|
||
CB32: D0 02 618 BNE :INW
|
||
CB34: E6 45 619 INC $45 ; inc msb on page boundary
|
||
CB36: E6 3C 620 :INW INC WORK
|
||
CB38: D0 EC 621 BNE :LOOPW
|
||
CB3A: 88 622 DEY
|
||
CB3B: D0 E7 623 BNE :LOOPY
|
||
624
|
||
CB3D: A0 02 625 LDY #2 ; send 2 dummy crc bytes
|
||
CB3F: 9D 80 C0 626 :CRC STA DATA,X
|
||
CB42: 3C 81 C0 627 :WAIT4 BIT CTRL,X
|
||
CB45: 10 FB 628 BPL :WAIT4
|
||
CB47: 88 629 DEY
|
||
CB48: D0 F5 630 BNE :CRC
|
||
631
|
||
CB4A: A9 FF 632 LDA #DUMMY ; get data response
|
||
CB4C: 9D 80 C0 633 STA DATA,X
|
||
CB4F: 3C 81 C0 634 :WAIT5 BIT CTRL,X
|
||
CB52: 10 FB 635 BPL :WAIT5
|
||
CB54: BD 80 C0 636 LDA DATA,X
|
||
CB57: 29 1F 637 AND #$1F
|
||
CB59: C9 05 638 CMP #$05
|
||
CB5B: D0 1A 639 BNE :ERROR ; check for write error
|
||
640
|
||
CB5D: A9 FF 641 :WAIT6 LDA #DUMMY ; wait for write cycle
|
||
CB5F: 9D 80 C0 642 STA DATA,X ; to complete
|
||
CB62: 3C 81 C0 643 :WAIT61 BIT CTRL,X
|
||
CB65: 10 FB 644 BPL :WAIT61
|
||
CB67: BD 80 C0 645 LDA DATA,X
|
||
CB6A: C9 00 646 CMP #$00
|
||
CB6C: F0 EF 647 BEQ :WAIT6
|
||
648
|
||
CB6E: A9 0F 649 LDA #SSNONE ; disable /CS
|
||
CB70: 9D 83 C0 650 STA SS,X
|
||
CB73: 18 651 CLC ; no error
|
||
CB74: A9 00 652 LDA #0
|
||
CB76: 60 653 RTS
|
||
654
|
||
655 :ERROR
|
||
CB77: A9 FF 656 :WAIT7 LDA #DUMMY ; wait for write cycle
|
||
===== Page 13 =====
|
||
|
||
CB79: 9D 80 C0 657 STA DATA,X ; to complete
|
||
CB7C: 3C 81 C0 658 :WAIT71 BIT CTRL,X
|
||
CB7F: 10 FB 659 BPL :WAIT71
|
||
CB81: BD 80 C0 660 LDA DATA,X
|
||
CB84: C9 00 661 CMP #$00
|
||
CB86: F0 EF 662 BEQ :WAIT7
|
||
CB88: A9 0F 663 LDA #SSNONE
|
||
CB8A: 9D 83 C0 664 STA SS,X ; disable /CS
|
||
CB8D: 38 665 SEC ; an error occured
|
||
CB8E: A9 27 666 LDA #$27
|
||
CB90: 60 667 RTS
|
||
668
|
||
669
|
||
670 ********************************
|
||
671 *
|
||
672 * Format
|
||
673 * not supported!
|
||
674 *
|
||
675 ********************************
|
||
676
|
||
CB91: 38 677 FORMAT SEC
|
||
CB92: A9 01 678 LDA #$01 ; invalid command
|
||
CB94: 60 679 RTS
|
||
680
|
||
681
|
||
CB95: 40 00 00 682 CMD0 HEX 400000
|
||
CB98: 00 00 95 683 HEX 000095
|
||
CB9BB 1 00 00 684 CMD1 HEX 410000
|
||
CB9E: 00 00 F9 685 HEX 0000F9
|
||
CBA1: 48 00 00 686 CMD8 HEX 480000
|
||
CBA4: 01 AA 87 687 HEX 01AA87
|
||
CBA7: 50 00 00 688 CMD16 HEX 500000
|
||
CBAA: 02 00 FF 689 HEX 0200FF
|
||
CBAD: 77 00 00 690 CMD55 HEX 770000
|
||
CBB0: 00 00 65 691 HEX 0000065
|
||
CBB3: 69 40 00 692 ACMD4140 HEX 694000
|
||
CBB6: 00 00 77 693 HEX 000077
|
||
CBB9: 69 00 00 694 ACMD410 EX 690000
|
||
CBBC: 00 00 FF 695 HEX 0000FF
|
||
|
||
|
||
--End assembly, 959 bytes, Errors: 0
|
||
|
||
|
||
Symbol table - alphabetical order:
|
||
|
||
ACMD410 =$CBB9 ACMD4140=$CBB3 BLOCK =$CA3F ? BOOT =$C823
|
||
MD =$C9DE CMD0 =$CB95 CMD1 =$CB9B CMD16 =$CBA7
|
||
CMD55 =$CBAD CMD8 =$CBA1 CMDHI =$41 CMDLO =$40
|
||
COMMAND =$CA69 CTRL =$C081 CURSLOT =$07F8 DATA =$C080
|
||
DEBUG =$00 DIV =$C082 DRIVER =$C83F DUMMY =$FF
|
||
FORMAT =$CB91 GETR1 =$C9F2 GETR3 =$CA0D INIT =$C900
|
||
INITED =$0678 R30 =$0478 R31 =$04F8 R32 =$0578
|
||
R33 =$05F8 READ =$CAB7 SLOT =$3D SLOT16 =$2B
|
||
SS =$C083 SS0 =$0E SSNONE =$0F STATUS =$CAAF
|
||
WORK =$3C WRITE =$CB01
|
||
|
||
===== Page 14 =====
|
||
|
||
|
||
Symbol table - numerical order:
|
||
|
||
DEBUG =$00 SS0 =$0E SSNONE =$0F SLOT16 =$2B
|
||
WORK =$3C SLOT =$3D CMDLO =$40 CMDHI =$41
|
||
DUMMY =$FF R30 =$0478 R31 =$04F8 R32 =$0578
|
||
R33 =$05F8 INITED =$0678 CURSLOT =$07F8 DATA =$C080
|
||
CTRL =$C081 DIV =$C082 SS =$C083 ? BOOT =$C823
|
||
DRIVER =$C83F INIT =$C900 CMD =$C9DE GETR1 =$C9F2
|
||
GETR3 =$CA0D BLOCK =$CA3F COMMAND =$CA69 STATUS =$CAAF
|
||
READ =$CAB7 WRITE =$CB01 FORMAT =$CB91 CMD0 =$CB95
|
||
CMD1 =$CB9B CMD8 =$CBA1 CMD16 =$CBA7 CMD55 =$CBAD
|
||
ACMD4140=$CBB3 ACMD410 =$CBB9
|
||
|