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1 ********************************************************************
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2 * PRINTER - CoCo serial port printer 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 * 10 From Tandy OS-9 Level One VR 02.00.00
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9
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10 nam PRINTER
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11 ttl CoCo serial port printer driver
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12
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13 * Disassembled 98/08/23 17:32:06 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 scfdefs
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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 10
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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 V.SCF
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0
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28 u001D rmb 1
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29 u001E rmb 1
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30 u001F rmb 1
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31 u0020 rmb 2
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32 u0022 rmb 1
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33 u0023 rmb 1
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34 u0024 rmb 2
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35 u0026 rmb 2
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36 u0028 rmb 1
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37 size equ .
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256
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38
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39 fcb UPDAT.
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0
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40
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41 name fcs /PRINTER/
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42 fcb edition
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43
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44 L0016 fcb $04
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45 fcb $82
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46 fcb $01
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47 fcb $A2 "
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48 fcb $00
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49 fcb $CD M
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50 fcb $00
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51 fcb $63 c
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52 fcb $00
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53 fcb $2D -
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54 fcb $00
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55 fcb $13
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56 fcb $00
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57 fcb $05
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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 pshs cc
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77 orcc #IntMasks
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78 ldx #PIA.U8
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79 clr $01,x
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80 ldd <IT.COL,y get column size
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81 std <u0022,u
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82 lda #$FE
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83 sta ,x
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84 lda #$36
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85 sta $01,x
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86 lda ,x
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87 ldd <IT.PAR,y get parity/baud
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88 lbsr L0155
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89 puls cc
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90 lbsr L0104
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91 lbcs L0100
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92
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93 * Term
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94 *
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95 * Entry:
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96 * U = address of device memory area
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97 *
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98 * Exit:
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99 * CC = carry set on error
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100 * B = error code
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101 *
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102 Term rts
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103
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104 L005F pshs a
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105 lda <$35,y
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106 anda #$0F
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107 cmpa #$07
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108 bcc L0076
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109 lsla
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110 leax <L0016,pcr
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111 ldd a,x
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112 std <u0024,u
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113 clrb
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114 puls pc,a
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115 L0076 ldb #E$BMode
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116 puls a
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117 L007A orcc #Carry
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118 rts
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119 L007D stb >PIA.U8
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120 L0080 pshs b,a
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121 ldd <u0024,u
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122 L0085 subd #$0001
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123 bne L0085
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124 puls pc,b,a
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125
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126 * Write
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127 *
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128 * Entry:
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129 * A = character to write
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130 * Y = address of path descriptor
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131 * U = address of device memory area
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132 *
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133 * Exit:
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134 * CC = carry set on error
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135 * B = error code
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136 *
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137 Write bsr L005F
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138 bcs L007A
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139 pshs b,a
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140 bsr L00CB
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141 puls b,a
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142 bcs L0100
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143 ldb #$09
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144 pshs b,cc
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145 orcc #IntMasks
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146 tst <u001E,u
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147 beq L00A5
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148 dec $01,s
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149 L00A5 andcc #^Carry
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150 L00A7 ldb #$02
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151 bcs L00AC
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152 clrb
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153 L00AC bsr L007D
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154 lsra
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155 dec $01,s
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156 bne L00A7
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157 ldb <u001D,u
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158 beq L00BC
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159 andb #$FE
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160 bsr L007D
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161 L00BC ldb #$02
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162 bsr L007D
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163 tst <u001F,u
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164 beq L00C9
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165 ldb #$02
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166 bsr L007D
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167 L00C9 puls pc,b,cc
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168 L00CB clra
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169 clrb
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170 std <u0026,u
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171 L00D0 ldd #$0303
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172 L00D3 bsr L0104
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173 bcs L00DE
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174 bsr L0080
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175 decb
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176 bne L00D3
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177 clrb
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178 rts
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179 L00DE bsr L0080
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180 deca
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181 bne L00D3
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182 pshs x
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183 ldx #$0001
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184 os9 F$Sleep
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185 puls x
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186 ldd <u0026,u
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187 addd #$0001
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188 std <u0026,u
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189 ldb <u0028,u
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190 beq L00D0
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191 cmpb <u0026,u
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192 bhi L00D0
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193 L0100 comb
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194 ldb #E$NotRdy
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195 rts
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196 L0104 pshs x,b,a
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197 ldb >PIA.U8+2
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198 lda >$FF69
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199 bpl L0126
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200 lda >PIA.U8+3
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201 bita #$01
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202 beq L0126
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203 bita #$80
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204 beq L0126
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205 orcc #Entire
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206 leax <L0126,pcr
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207 pshs x
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208 pshs u,y,x,dp,b,a,cc
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209 jmp [D.SvcIRQ]
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210 L0126 lsrb
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211 puls pc,x,b,a
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212
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213 * GetStat
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214 *
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215 * Entry:
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216 * A = function code
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217 * Y = address of path descriptor
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218 * U = address of device memory area
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219 *
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220 * Exit:
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221 * CC = carry set on error
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222 * B = error code
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223 *
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224 GetStat cmpa #SS.EOF
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225 bne L012F
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226 L012D clrb
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227 rts
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228 L012F ldx PD.RGS,y
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229 cmpa #SS.ScSiz
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230 beq L0140
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231 cmpa #SS.ComSt
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232 bne L0190
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233 ldd <u0020,u
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234 std R$Y,x
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235 bra L012D
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236 L0140 clra
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237 ldb <u0022,u
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238 std R$X,x
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239 ldb <u0023,u
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240 std R$Y,x
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241 bra L012D
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242
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243 * GetStat
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244 *
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245 * Entry:
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246 * A = function code
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247 * Y = address of path descriptor
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248 * U = address of device memory area
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249 *
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250 * Exit:
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251 * CC = carry set on error
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252 * B = error code
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253 *
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254 SetStat cmpa #SS.ComSt
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255 bne L0190
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256 ldx PD.RGS,y
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257 ldd R$Y,x
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258 L0155 std <u0020,u
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259 clra
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260 clrb
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261 std <u001D,u
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262 sta <u001F,u
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263 ldd <u0020,u
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264 tstb
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265 bpl L0169
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266 inc <u001F,u
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267 L0169 bitb #$40
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268 bne Read
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269 bitb #$20
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270 beq L0174
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271 inc <u001E,u
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272 L0174 bita #$20
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273 beq L0186
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274 bita #$80
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275 beq Read
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276 inc <u001D,u
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277 bita #$40
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278 bne L0186
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279 inc <u001D,u
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280 L0186 anda #$0F
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281 sta <u0028,u
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282 rts
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283
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284 * Read
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285 *
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286 * Entry:
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287 * Y = address of path descriptor
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288 * U = address of device memory area
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289 *
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290 * Exit:
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291 * A = character read
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292 * CC = carry set on error
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293 * B = error code
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294 *
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295 Read comb
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296 ldb <E$BMode
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297 rts
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298
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299 L0190 comb
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300 ldb #E$UnkSvc
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301 rts
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302
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303 emod
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304 eom equ *
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305 end
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306
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