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1 ********************************************************************
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2 * JoyDrv - Joystick Driver for 6551/Microsoft Mouse
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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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8 * 6 L2 Upgrade distribution version
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9
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10 nam JoyDrv
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11 ttl Joystick Driver for 6551/Microsoft Mouse
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12
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13 * Disassembled 98/09/09 09:50:25 by Disasm v1.6 (C) 1988 by RML
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14
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15 MPI set 1
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16
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17 ifp1
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18 use defsfile
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19 endc
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20
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21 tylg set Systm+Objct
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22 atrv set ReEnt+rev
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23 rev set $01
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24 edition set 6
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25
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26 mod eom,name,tylg,atrv,start,size
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27
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28 u0000 rmb 2
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29 u0002 rmb 1
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30 u0003 rmb 2
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31 u0005 rmb 1
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32 u0006 rmb 1
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33 u0007 rmb 8
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34 u000F rmb 113
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35 u0080 rmb 18
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36 u0092 rmb 21
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37 u00A7 rmb 65217
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38 size equ .
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39
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40 name fcs /JoyDrv/
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41 fcb edition
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42
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43 start lbra Init
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44 lbra Term
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45 lbra SSMsBtn
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46 lbra SSMsXY
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47 lbra SSJoyBtn
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48
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49 SSJoyXY pshs x,b,a
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50 ldx #PIA0Base
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51 lda <$23,x
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52 ldb <$20,x
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53 pshs b,a
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54 anda #$F7
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55 sta <$23,x
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56 lda $01,x
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57 ldb $03,x
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58 pshs b,a
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59 andb #$F7
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60 lsr $04,s
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61 bcs L0043
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62 orb #$08
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63 L0043 stb $03,x
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64 lda ,s
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65 ora #$08
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66 bsr L0065
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67 std $06,s
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68 lda ,s
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69 anda #$F7
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70 bsr L0065
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71 std $04,s
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72 puls b,a
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73 sta $01,x
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74 stb $03,x
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75 puls b,a
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76 stb <$20,x
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77 sta <$23,x
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78 puls pc,y,x
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79 L0065 sta $01,x
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80 lda #$7F
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81 ldb #$40
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82 bra L0078
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83 L006D lsrb
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84 cmpb #$01
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85 bhi L0078
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86 lsra
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87 lsra
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88 tfr a,b
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89 clra
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90 rts
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91 L0078 pshs b
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92 sta <$20,x
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93 tst ,x
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94 bpl L0085
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95 adda ,s+
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96 bra L006D
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97 L0085 suba ,s+
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98 bra L006D
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99 L0089 fcb $00
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100 L008A fcb $0f,$01
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101
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102 Init fcb $cc,$00,$07
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103
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104 L008F fcb $a7
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105 bitb #$5A
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106 bpl L008F
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107 ldd >M$Mem,pcr
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108 addd #$0001
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109 leax >L0089,pcr
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110 leay >L0152,pcr
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111 os9 F$IRQ
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112 bcs L00F7
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113 ldx >M$Mem,pcr
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114 ldd #$0938
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115 pshs cc
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116 orcc #IntMasks
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117 sta $01,x
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118 std $02,x
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119 lda >PIA1Base+3
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120 anda #$FC
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121 sta >PIA1Base+3
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122 lda >PIA1Base+2
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123 lda #$01
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124 ora <u0092
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125 sta <u0092
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126 sta >IrqEnR
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127 ldb ,x
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128 ldb $01,x
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129 ldb ,x
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130 ldb $01,x
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131 andb >L008A,pcr
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132 bne L00DF
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133
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134 ifeq MPI-1
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135 lda #$03
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136 sta MPI.Slct
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137 endc
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138
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139 puls pc,cc
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140
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141 Term pshs cc
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142 orcc #IntMasks
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143 L00DF ldx >M$Mem,pcr
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144 lda #$0B
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145 sta $02,x
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146 puls cc
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147 leax $01,x
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148 tfr x,d
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149 ldx #$0000
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150 leay >L0152,pcr
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151 os9 F$IRQ
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152 L00F7 rts
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153
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154 SSJoyBtn ldb #$FF
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155 ldx #PIA0Base
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156 stb $02,x
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157 ldb ,x
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158 comb
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159 andb #$0F
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160 rts
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161
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162 SSMsBtn lda ,u
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163 clrb
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164 bita #$20
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165 beq L010E
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166 orb #$03
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167 L010E bita #$10
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168 beq L0114
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169 orb #$0C
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170 L0114 tfr b,a
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171 anda #$FA
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172 pshs a
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173 andb #$05
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174 orb u0007,u
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175 leax <L0134,pcr
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176 lda b,x
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177 anda #$0A
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178 sta u0007,u
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179 ldb b,x
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180 andb #$85
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181 bpl L0131
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182 ldb u0002,u
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183 andb #$C0
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184 L0131 orb ,s+
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185 rts
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186 L0134 fdb $0003,$0003,$0806,$0206,$8002,$0002,$0806,$0a06
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187
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188 SSMsXY pshs cc
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189 orcc #IntMasks
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190 ldx u0003,u
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191 ldd u0005,u
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192 lsra
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193 rorb
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194 tfr d,y
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195 puls pc,cc
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196 L0152 ldx >M$Mem,pcr
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197 bita #$07
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198 beq L0164
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199 ldb ,x
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200 L015C lda u0002,u
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201 anda #$FC
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202 L0160 sta u0002,u
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203 L0162 clrb
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204 rts
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205 L0164 bita #$08
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206 beq L0162
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207 ldb ,x
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208 lda u0002,u
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209 anda #$03
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210 bne L017A
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211 bitb #$40
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212 beq L0162
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213 L0174 stb a,u
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214 inc u0002,u
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215 clrb
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216 rts
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217 L017A bitb #$40
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218 bne L015C
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219 cmpa #$02
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220 bcs L0174
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221 ldx #$017E
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222 pshs x
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223 lda ,u
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224 lsra
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225 lsra
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226 leax u0005,u
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227 bsr L01A9
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228 ldd ,u
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229 ldx #$027F
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230 stx ,s
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231 leax u0003,u
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232 bsr L01A9
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233 leas $02,s
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234 lda #$80
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235 ldx u0003,u
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236 cmpx #$0140
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237 bcc L0160
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238 ora #$C0
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239 bra L0160
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240 L01A9 lslb
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241 lslb
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242 lsra
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243 rorb
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244 lsra
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245 rorb
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246 sex
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247 pshs b,a
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248 bpl L01BB
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249 orb #$07
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250 addd #$0001
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251 bra L01BD
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252 L01BB andb #$F8
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253 L01BD asra
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254 rorb
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255 addd ,s++
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256 addd ,x
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257 bpl L01C7
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258 clra
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259 clrb
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260 L01C7 cmpd $02,s
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261 bls L01CE
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262 ldd $02,s
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263 L01CE std ,x
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264 rts
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265
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266 emod
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267 eom equ *
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268 end
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