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151
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1 ********************************************************************
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2 * CCHDisk - Tandy hard disk driver
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3 *
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4 * $Id$
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5 *
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6 * Ed. Comments Who YY/MM/DD
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7 * ------------------------------------------------------------------
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201
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8 * 4 From Tandy OS-9 Level One VR 02.00.00
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151
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9
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0
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10 nam CCHDisk
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11 ttl Tandy hard disk driver
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12
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13 * Disassembled 98/08/23 17:28:39 by Disasm v1.6 (C) 1988 by RML
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14
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15 ifp1
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16 use defsfile
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17 use rbfdefs
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18 endc
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19
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20 tylg set Drivr+Objct
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21 atrv set ReEnt+rev
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22 rev set $01
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201
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23 edition set 4
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0
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24
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25 mod eom,name,tylg,atrv,start,size
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26
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257
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27 rmb DRVBEG
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0
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28 u000F rmb 91
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29 u006A rmb 61
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30 u00A7 rmb 2
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31 u00A9 rmb 1
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32 u00AA rmb 1
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33 u00AB rmb 2
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34 u00AD rmb 2
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35 u00AF rmb 1
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36 u00B0 rmb 1
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37 u00B1 rmb 1
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38 u00B2 rmb 1
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39 u00B3 rmb 1
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40 u00B4 rmb 1
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41 u00B5 rmb 1
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42 u00B6 rmb 1
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43 u00B7 rmb 1
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44 u00B8 rmb 1
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45 u00B9 rmb 1
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46 u00BA rmb 1
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47 u00BB rmb 1
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48 u00BC rmb 2
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49 u00BE rmb 1
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50 u00BF rmb 2
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51 u00C1 rmb 2
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52 size equ .
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256
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53
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54 fcb DIR.+SHARE.+PREAD.+PWRIT.+PEXEC.+READ.+WRITE.+EXEC.
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0
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55
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1068
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56 IFGT Level-1
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57 name fcs /CC3HDisk/
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58 ELSE
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0
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59 name fcs /CCHDisk/
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1068
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60 ENDC
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0
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61 fcb edition
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62
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63 start lbra Init
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64 lbra Read
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65 lbra Write
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66 lbra GetStat
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67 lbra SetStat
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68 lbra Term
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69
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70 * Init
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71 *
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72 * Entry:
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73 * Y = address of device descriptor
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74 * U = address of device memory area
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75 *
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76 * Exit:
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77 * CC = carry set on error
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78 * B = error code
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79 *
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80 Init lbsr L04D4
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81 lda >$FF51
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82 cmpa #$08
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83 beq L0037
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84 comb
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85 ldb #E$NotRdy
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86 bra L0083
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87 L0037 lbsr L04C0
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88 bcs L0083
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89 ldd #$FFFF
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90 std >u00A9,u
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91 std >u00A7,u
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92 leax <$25,y
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93 ldd ,x++
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94 sta >u00B3,u
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95 stb >u00BE,u
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96 ldd ,x++
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97 std >u00BF,u
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98 ldd ,x++
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99 std >u00C1,u
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100 lda ,x
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101 sta >u00B2,u
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102 lda #$04
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103 leay u000F,u
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104 ldb #$FF
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105 L006C stb ,y
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106 stb <$15,y
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107 leay <$26,y
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108 deca
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109 bne L006C
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110 ldd #256
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111 pshs u
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112 os9 F$SRqMem
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113 tfr u,x
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114 puls u
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115 L0083 bcs L00C7
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116 stx >u00AB,u
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117 leax >$0100,x
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118 stx >u00AD,u
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119 bra L00C6
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120
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121 * Term
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122 *
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123 * Entry:
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124 * U = address of device memory area
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125 *
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126 * Exit:
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127 * CC = carry set on error
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128 * B = error code
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129 *
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130 Term pshs u
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131 ldu >u00AB,u
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132 ldd #256
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133 os9 F$SRtMem
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134 puls u
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135
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136 * GetStat
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137 *
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138 * Entry:
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139 * A = function code
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140 * Y = address of path descriptor
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141 * U = address of device memory area
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142 *
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143 * Exit:
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144 * CC = carry set on error
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145 * B = error code
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146 *
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147 GetStat clrb
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148 rts
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149
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150 * Read
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151 *
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152 * Entry:
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153 * B = MSB of the disk's LSN
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154 * X = LSB of the disk's LSN
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155 * Y = address of path descriptor
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156 * U = address of device memory area
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157 *
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158 * Exit:
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159 * CC = carry set on error
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160 * B = error code
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161 *
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162 Read lbsr L04D4
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163 cmpx #$0000
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164 bne L00CB
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165 tstb
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166 bne L00CB
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167 bsr L00D1
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168 bcs L00C7
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169 ldx $08,y
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170 pshs y,x
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171 ldy >u00A7,u
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172 ldb #$14
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173 L00BD lda b,x
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174 sta b,y
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175 decb
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176 bpl L00BD
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177 puls y,x
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178 L00C6 clrb
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179 L00C7 lbsr L04E1
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180 rts
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181 L00CB bsr L00D1
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182 bcs L00C7
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183 bra L00C6
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184 L00D1 lbsr L033F
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185 bcs L00E3
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186 ldx $08,y
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187 lda #$02
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188 sta >u00B9,u
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189 lda #$20
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190 lbsr L028C
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191 L00E3 rts
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192
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193 * Write
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194 *
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195 * Entry:
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196 * B = MSB of the disk's LSN
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197 * X = LSB of the disk's LSN
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198 * Y = address of path descriptor
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199 * U = address of device memory area
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200 *
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201 * Exit:
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202 * CC = carry set on error
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203 * B = error code
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204 *
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205 Write lbsr L04D4
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206 bsr L014A
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207 bcs L00C7
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208 pshs x,b
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209 bsr L0100
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210 puls x,b
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211 bcs L00C7
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212 tst <$28,y
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213 bne L00C6
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214 bsr L0113
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215 bcc L00C6
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216 ldb <$00F5
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217 bra L00C7
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218 L0100 lbsr L033F
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219 bcs L0112
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220 lda #$03
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221 sta >u00B9,u
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222 lda #$30
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223 ldx $08,y
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224 lbsr L028C
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225 L0112 rts
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226 L0113 pshs x,b,a
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227 ldx $08,y
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228 pshs x
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229 ldx >u00AB,u
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230 stx $08,y
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231 ldx $04,s
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232 bsr L00D1
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233 puls x
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234 stx $08,y
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235 bcs L0148
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236 lda #$20
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237 pshs u,y,a
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238 ldy >u00AB,u
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239 tfr x,u
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240 L0134 ldx ,u
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241 cmpx ,y
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242 bne L0144
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257
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243 leau $08,u
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0
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244 leay $08,y
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245 dec ,s
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246 bne L0134
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247 bra L0146
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248 L0144 orcc #Carry
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249 L0146 puls u,y,a
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250 L0148 puls pc,x,b,a
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251 L014A pshs b
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252 ldb >$FF50
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253 beq L0179
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254 lda <$21,y
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255 bne L015C
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256 andb #$80
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257 bne L0174
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258 bra L0179
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259 L015C cmpa #$01
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260 bne L0166
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261 andb #$40
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262 bne L0174
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263 bra L0179
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264 L0166 cmpa #$02
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265 bne L0170
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266 andb #$20
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267 bne L0174
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268 bra L0179
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269 L0170 andb #$10
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270 beq L0179
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271 L0174 comb
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272 ldb #E$WP
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273 stb ,s
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274 L0179 puls pc,b
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275
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276 * SetStat
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277 *
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278 * Entry:
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279 * A = function code
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280 * Y = address of path descriptor
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281 * U = address of device memory area
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282 *
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283 * Exit:
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284 * CC = carry set on error
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285 * B = error code
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286 *
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287 SetStat lbsr L04D4
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288 lbsr L0460
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289 ldx PD.RGS,y
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290 ldb R$B,x
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291 cmpb #SS.Reset
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292 bne L018E
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293 lbsr L04A5
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294 bra L01A1
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295 L018E cmpb #SS.WTrk
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296 bne L0196
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297 bsr L01B5
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298 bra L01A1
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299 L0196 cmpb #SS.SQD
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300 bne L019E
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301 bsr L01A8
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302 bra L01A1
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303 L019E comb
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304 ldb #E$UnkSvc
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305 L01A1 lbcs L00C7
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306 lbra L00C6
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307
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308 L01A8 ldd <$25,y
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309 exg a,b
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310 std >u00B6,u
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311 lbsr L0496
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312 rts
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313
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314 L01B5 ldd $8,x
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315 cmpd #$0000
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316 bne L01C3
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317 ldd $6,x
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318 cmpa #$00
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319 beq L01C5
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320 L01C3 clrb
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321 rts
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322 L01C5 pshs u,y,x
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323 clr >u00AF,u
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324 clr >u00B0,u
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325 clr >u00B1,u
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326 lda <$2A,y
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327 bsr L023D
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328 L01D8 lda <$2A,y
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329 sta >u00B4,u
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330 lda >u00B2,u
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331 sta >u00B5,u
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332 lda >u00B8,u
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333 anda #$F8
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334 sta >u00B8,u
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335 lda >u00B1,u
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336 ora >u00B8,u
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337 sta >u00B8,u
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338 ldd >u00AF,u
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339 exg a,b
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340 std >u00B6,u
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341 lda #$03
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342 sta >u00B9,u
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343 lda #$50
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344 ldx >u00AB,u
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345 bsr L028C
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346 bcs L023B
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347 lda >u00B1,u
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348 inca
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349 sta >u00B1,u
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350 cmpa <$27,y
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351 bcs L01D8
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352 clr >u00B1,u
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353 ldd >u00AF,u
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354 addd #$0001
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355 std >u00AF,u
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356 cmpd <$25,y
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357 bcs L01D8
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358 clrb
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359 L023B puls pc,u,y,x
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360 L023D pshs y,x,b,a
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361 ldb <$2D,y
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362 stb >u00BB,u
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363 sta >u00BA,u
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364 lsla
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365 ldx >u00AB,u
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366 leay a,x
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367 nega
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368 pshs y,x,b,a
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369 clra
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370 L0255 clr ,x
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371 sta $01,x
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372 inca
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373 cmpa >u00BA,u
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374 beq L0278
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375 ldb >u00BB,u
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376 lslb
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377 abx
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378 cmpx $04,s
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379 bcs L026E
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380 ldb ,s
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381 leax b,x
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382 L026E cmpx $02,s
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383 bne L0255
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384 leax $02,x
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385 stx $02,s
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386 bra L0255
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387 L0278 ldy $04,s
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388 lda #$00
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389 L027D cmpy >u00AD,u
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390 beq L0288
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391 sta ,y+
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392 bra L027D
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393 L0288 leas $06,s
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394 puls pc,y,x,b,a
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395 L028C pshs y,x,a
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396 leax >u00B3,u
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397 ldy #$FF59
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398 ldb #$06
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399 L0298 lda ,x+
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400 sta ,y+
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401 decb
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402 bne L0298
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403 lda ,s
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404 sta ,y
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405 ldy $03,s
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406 ldx $01,s
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407 lda >u00B9,u
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408 cmpa #$03
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409 beq L02C6
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410 bsr L02E1
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411 cmpa #$02
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412 beq L02BA
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413 L02B6 bsr L02F2
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414 puls pc,y,x,a
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415 L02BA bsr L02EB
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416 L02BC lda >$FF58
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417 sta ,x+
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418 decb
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419 bne L02BC
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420 bra L02B6
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421 L02C6 lda ,x+
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422 sta >$FF58
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423 decb
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424 bne L02C6
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425 bsr L02E1
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426 bra L02B6
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427 L02D2 lda >$FF5F
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428 pshs a
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429 lda >$FF5F
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430 cmpa ,s
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431 leas $01,s
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432 bne L02D2
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433 rts
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434 L02E1 pshs a
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435 L02E3 bsr L02D2
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436 anda #$80
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437 bne L02E3
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438 puls pc,a
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439 L02EB bsr L02D2
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440 bita #$08
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441 beq L02EB
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442 rts
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443 L02F2 bsr L02D2
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444 bita #$01
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445 bne L02FA
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446 clrb
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447 rts
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448 L02FA comb
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449 bita #$02
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450 beq L0302
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451 lbsr L04F1
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452 L0302 lda >$FF59
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453 bita #$80
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454 bne L0332
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455 bita #$40
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456 bne L031F
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457 bita #$10
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458 bne L0322
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459 bita #$04
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460 bne L0336
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461 bita #$02
|
|
|
462 bne L0322
|
|
|
463 bita #$01
|
|
|
464 bne L0326
|
|
|
465 clrb
|
|
|
466 rts
|
|
|
467 L031F ldb #E$CRC
|
|
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468 rts
|
|
|
469 L0322 comb
|
|
|
470 ldb #E$Seek
|
|
|
471 rts
|
|
|
472 L0326 comb
|
|
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473 ldb #E$Read
|
|
|
474 rts
|
|
|
475 comb
|
|
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476 ldb #E$Write
|
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477 rts
|
|
|
478 L032E comb
|
|
|
479 ldb #E$NotRdy
|
|
|
480 rts
|
|
|
481 L0332 comb
|
|
|
482 ldb #E$Unit
|
|
|
483 rts
|
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484 L0336 lda >$FF5F
|
|
|
485 bita #$10
|
|
|
486 beq L0322
|
|
|
487 bra L032E
|
|
|
488 L033F lbsr L0460
|
|
|
489 bcs L0346
|
|
|
490 bsr L0347
|
|
|
491 L0346 rts
|
|
|
492 L0347 pshs y,x,b
|
|
|
493 lbsr L04C0
|
|
|
494 lbcs L0428
|
|
|
495 stx >u00BC,u
|
|
|
496 tstb
|
|
|
497 bne L0380
|
|
|
498 cmpx #$0000
|
|
|
499 bne L0380
|
|
|
500 leax >u00B4,u
|
|
|
501 ldd #$0001
|
|
|
502 sta $01,x
|
|
|
503 sta $02,x
|
|
|
504 sta $03,x
|
|
|
505 stb ,x
|
|
|
506 lda >u00B8,u
|
|
|
507 anda #$F8
|
|
|
508 sta >u00B8,u
|
|
|
509 tst >u00AA,u
|
|
|
510 lbne L040B
|
|
|
511 lbra L0427
|
|
|
512 L0380 ldy >u00A7,u
|
|
|
513 cmpb ,y
|
|
|
514 lbhi L042E
|
|
|
515 bcs L0393
|
|
|
516 cmpx $01,y
|
|
|
517 lbcc L042E
|
|
|
518 L0393 clr >u00B6,u
|
|
|
519 clr >u00B7,u
|
|
|
520 ldb ,s
|
|
|
521 ldx $01,s
|
|
|
522 ldy $03,s
|
|
|
523 tstb
|
|
|
524 bne L03B4
|
|
|
525 pshs x,b,a
|
|
|
526 lda <$2A,y
|
|
|
527 ldb <$27,y
|
|
|
528 mul
|
|
|
529 subd $02,s
|
|
|
530 puls x,b,a
|
|
|
531 bhi L03D5
|
|
|
532 L03B4 pshs u,y,x,b,a
|
|
|
533 lda >u00BE,u
|
|
|
534 ldy >u00BF,u
|
|
|
535 ldu >u00C1,u
|
|
|
536 bsr L0435
|
|
|
537 ldu $06,s
|
|
|
538 std >u00BC,u
|
|
|
539 tfr x,d
|
|
|
540 exg a,b
|
|
|
541 std >u00B6,u
|
|
|
542 puls u,y,x,b,a
|
|
|
543 L03D5 clra
|
|
|
544 ldb <$2A,y
|
|
|
545 beq L042E
|
|
|
546 pshs b,a
|
|
|
547 pshs a
|
|
|
548 ldd >u00BC,u
|
|
|
549 L03E3 subd $01,s
|
|
|
550 bcs L03EB
|
|
|
551 inc ,s
|
|
|
552 bra L03E3
|
|
|
553 L03EB addd $01,s
|
|
|
554 stb >u00B5,u
|
|
|
555 lda >u00B8,u
|
|
|
556 anda #$F8
|
|
|
557 ora ,s
|
|
|
558 sta >u00B8,u
|
|
|
559 leas $03,s
|
|
|
560 lda #$01
|
|
|
561 sta >u00B4,u
|
|
|
562 tst >u00AA,u
|
|
|
563 beq L0427
|
|
|
564 L040B clr >u00AA,u
|
|
|
565 ldy >u00A7,u
|
|
|
566 lda <$15,y
|
|
|
567 ldy $03,s
|
|
|
568 cmpa #$FF
|
|
|
569 bne L0423
|
|
|
570 lbsr L04A5
|
|
|
571 bra L0428
|
|
|
572 L0423 bsr L0496
|
|
|
573 bra L0428
|
|
|
574 L0427 clrb
|
|
|
575 L0428 bcc L042C
|
|
|
576 stb ,s
|
|
|
577 L042C puls pc,y,x,b
|
|
|
578 L042E puls b
|
|
|
579 comb
|
|
|
580 ldb #E$Sect
|
|
|
581 puls pc,y,x
|
|
|
582 L0435 pshs u,y,x,b,a
|
|
|
583 ldd $01,s
|
|
|
584 L0439 subd $04,s
|
|
|
585 bcc L0443
|
|
|
586 addd $04,s
|
|
|
587 andcc #^Carry
|
|
|
588 bra L0445
|
|
|
589 L0443 orcc #Carry
|
|
|
590 L0445 rol $03,s
|
|
|
591 rolb
|
|
|
592 rola
|
|
|
593 dec ,s
|
|
|
594 bne L0439
|
|
|
595 std ,s
|
|
|
596 andb $06,s
|
|
|
597 stb $02,s
|
|
|
598 ldb $07,s
|
|
|
599 beq L045E
|
|
|
600 L0457 lsr ,s
|
|
|
601 ror $01,s
|
|
|
602 decb
|
|
|
603 bne L0457
|
|
|
604 L045E puls pc,u,y,x,b,a
|
|
|
605 L0460 lda <$21,y
|
|
|
606 cmpa #$04
|
|
|
607 lbcc L0332
|
|
|
608 cmpa >u00A9,u
|
|
|
609 beq L0495
|
|
|
610 sta >u00A9,u
|
|
|
611 dec >u00AA,u
|
|
|
612 lsla
|
|
|
613 lsla
|
|
|
614 lsla
|
|
|
615 pshs a
|
|
|
616 lda >u00B8,u
|
|
|
617 anda #$E7
|
|
|
618 ora ,s
|
|
|
619 leas $01,s
|
|
|
620 sta >u00B8,u
|
|
|
621 pshs x
|
|
|
622 ldx <$1E,y
|
|
|
623 stx >u00A7,u
|
|
|
624 puls x
|
|
|
625 L0495 rts
|
|
|
626 L0496 clr >u00B9,u
|
|
|
627 lda <$22,y
|
|
|
628 anda #$0F
|
|
|
629 ora #$70
|
|
|
630 lbsr L028C
|
|
|
631 rts
|
|
|
632 L04A5 clr >u00B9,u
|
|
|
633 lda <$22,y
|
|
|
634 anda #$0F
|
|
|
635 ora #$10
|
|
|
636 lbsr L028C
|
|
|
637 bcs L04BF
|
|
|
638 ldx >u00A7,u
|
|
|
639 clr <$15,x
|
|
|
640 clr <$16,x
|
|
|
641 L04BF rts
|
|
|
642
|
|
|
643 L04C0 pshs b,a
|
|
|
644 clrb
|
|
|
645 L04C3 lda >$FF5F
|
|
|
646 bita #$40
|
|
|
647 bne L04D2
|
|
|
648 decb
|
|
|
649 bne L04C3
|
|
|
650 ldb #E$NotRdy
|
|
|
651 stb $01,s
|
|
|
652 comb
|
|
|
653 L04D2 puls pc,b,a
|
|
|
654
|
|
|
655 L04D4 dec <u006A
|
|
|
656 lda #$02
|
|
|
657 sta >MPI.Slct
|
|
|
658 lda #$08
|
|
|
659 L04DD sta >$FF51
|
|
|
660 rts
|
|
|
661
|
|
|
662 L04E1 pshs cc
|
|
|
663 lda #$00
|
|
|
664 sta >$FF51
|
|
|
665 lda #$03
|
|
|
666 sta >MPI.Slct
|
|
|
667 clr <u006A
|
|
|
668 puls pc,cc
|
|
|
669
|
|
|
670 L04F1 lda #$10
|
|
|
671 bra L04DD
|
|
|
672
|
|
|
673 emod
|
|
|
674 eom equ *
|
|
|
675 end
|
|
|
676
|
