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