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annotate menu.s68 @ 814:109ac52ffecd

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Menu cleanup with macros
author Michael Pavone <pavone@retrodev.com>
date Mon, 27 Jul 2015 09:27:15 -0700
parents 60686f8d5e48
children 35f5658d141f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
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1 dc.l $0, start
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Michael Pavone <pavone@retrodev.com>
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2 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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3 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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4 ;$10
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Michael Pavone <pavone@retrodev.com>
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5 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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6 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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7 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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8 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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9 ;$20
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Michael Pavone <pavone@retrodev.com>
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10 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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11 dc.l empty_handler
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12 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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13 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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14 ;$30
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Michael Pavone <pavone@retrodev.com>
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15 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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16 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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17 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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18 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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19 ;$40
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Michael Pavone <pavone@retrodev.com>
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20 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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21 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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22 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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23 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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24 ;$50
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Michael Pavone <pavone@retrodev.com>
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25 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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26 dc.l empty_handler
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27 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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28 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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29 ;$60
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Michael Pavone <pavone@retrodev.com>
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30 dc.l empty_handler
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31 dc.l empty_handler
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32 dc.l empty_handler
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33 dc.l empty_handler
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34 ;$70
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Michael Pavone <pavone@retrodev.com>
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35 dc.l int_4
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Michael Pavone <pavone@retrodev.com>
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36 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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37 dc.l int_6
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38 dc.l empty_handler
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39 ;$80
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Michael Pavone <pavone@retrodev.com>
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40 dc.l empty_handler
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41 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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42 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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43 dc.l empty_handler
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44 ;$90
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45 dc.l empty_handler
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46 dc.l empty_handler
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Michael Pavone <pavone@retrodev.com>
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47 dc.l empty_handler
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48 dc.l empty_handler
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49 ;$A0
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50 dc.l empty_handler
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51 dc.l empty_handler
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52 dc.l empty_handler
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53 dc.l empty_handler
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54 ;$B0
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55 dc.l empty_handler
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56 dc.l empty_handler
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57 dc.l empty_handler
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58 dc.l empty_handler
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59 ;$C0
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60 dc.l empty_handler
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61 dc.l empty_handler
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62 dc.l empty_handler
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63 dc.l empty_handler
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64 ;$D0
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65 dc.l empty_handler
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66 dc.l empty_handler
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67 dc.l empty_handler
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68 dc.l empty_handler
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69 ;$E0
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70 dc.l empty_handler
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71 dc.l empty_handler
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72 dc.l empty_handler
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73 dc.l empty_handler
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74 ;$F0
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75 dc.l empty_handler
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76 dc.l empty_handler
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77 dc.l empty_handler
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78 dc.l empty_handler
790
e8b14d5a5b5a Add something resembling a proper header
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79 dc.b "SEGA GENESIS "
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80 dc.b "(c) 2015.JULY "
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81 dc.b "Menu "
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82 dc.b " "
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83 dc.b " "
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84 dc.b "Menu "
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85 dc.b " "
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86 dc.b " "
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87 dc.b "GM MK-00000-00", 0, 0
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88 dc.b " "
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89 dc.l $0, rom_end-1, $FF0000, $FFFFFF
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90 dc.b " "
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91 dc.b " "
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92 dc.b " "
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93 dc.b " "
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94 dc.b "JUE "
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95
814
109ac52ffecd Menu cleanup with macros
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96 ;register addresses
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97 VDP_DATA equ $C00000
109ac52ffecd Menu cleanup with macros
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98 VDP_CTRL equ $C00004
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99 VDP_HV equ $C00008
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100 Z80_RAM equ $A00000
109ac52ffecd Menu cleanup with macros
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101 IO_AREA equ $A10000
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102
109ac52ffecd Menu cleanup with macros
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103 MODE_0 equ 0
109ac52ffecd Menu cleanup with macros
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104 MODE_1 equ 1
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105 SCROLL_A equ 2
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106 WINDOW equ 3
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107 SCROLL_B equ 4
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108 SAT equ 5
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109 BG_COLOR equ 7
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110 HINT equ $A
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111 MODE_3 equ $B
109ac52ffecd Menu cleanup with macros
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112 MODE_4 equ $C
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113 HSCROLL equ $D
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114 AUTOINC equ $F
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115 SCROLL EQU $10
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116 WINDOW_H equ $11
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117 WINDOW_V equ $12
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118 DMALEN_L equ $13
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119 DMALEN_H equ $14
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120 DMASRC_L equ $15
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121 DMASRC_M equ $16
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122 DMASRC_H equ $17
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123
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124 VDP_VRAM_WRITE equ $40000000
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125 VDP_CRAM_WRITE equ $C0000000
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126 VDP_VSRAM_WRITE equ $40000010
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127 VDP_DMA_FLAG equ $80
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128
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129 vdpregset macro
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130 move.w #(((\1) << 8) | $8000 | (\2)), (a1)
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131 endm
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132
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133 vdpreg macro
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134 dc.w (((\1) << 8) | $8000 | (\2))
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135 endm
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136
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137 ;Writes a normal VDP command to the control port
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138 ;\1 - VDP address
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139 ;\2 - Access type
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140 vdpaccess macro
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141 move.l #((\2) | (\1) << 16 & $3FFF0000 | (\1) >> 14 & 3), (a1)
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142 endm
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143
789
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144 empty_handler:
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145 int_6:
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146 rte
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147 int_4:
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148 rte
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149
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150 rsset $FFFF8000
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151 x_pos rs.w 1
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152 base_cmd rs.l 1
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153
814
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154 initial_regs:
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155 vdpreg MODE_1, $4 ;Mode 5, everything turned off
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156 vdpreg MODE_0, $4
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157 vdpreg SCROLL_A, $20 ;Scroll a table $8000
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158 vdpreg SCROLL_B, $05 ;Scroll b table $A000
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159 vdpreg SAT, $60 ;SAT table $C000
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
160 vdpreg BG_COLOR, 0
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
161 vdpreg HINT, $FF
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
162 vdpreg MODE_3, 0 ;full screen scroll
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
163 vdpreg MODE_4, $87 ;40 cell mode, double-res interlace
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
164 vdpreg HSCROLL, 0
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
165 vdpreg AUTOINC, 2
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
166 vdpreg SCROLL, 1 ;64x32 scroll size
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
167 end_initial_regs
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
168
789
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
169 start:
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
170 lea $C00000, a0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
171 lea $C00004, a1
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
172
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
173 moveq #(end_initial_regs-initial_regs-1), d0
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
174 lea initial_regs.w, a2
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
175 .regloop
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
176 move.w (a2)+, (a1)
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
177 dbra d0, .regloop
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
178
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
179 vdpaccess $0, VDP_CRAM_WRITE
789
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
180 move.w #$000, (a0)
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
181 move.w #$EEE, (a0)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
182
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
183 ;init scroll table
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
184 vdpaccess $0, VDP_VRAM_WRITE
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
185 move.w #0, (a0)
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
186 move.w #4, (a0)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
187
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
188 ;load tiles
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
189 vdpaccess $800, VDP_VRAM_WRITE
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
190 lea font(pc), a2
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
191 move.w #((fontend-font)/4 - 1), d0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
192 tloop:
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
193 move.l (a2)+, (a0)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
194 dbra d0, tloop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
195
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
196
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
197
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
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diff changeset
198 ;clear name tables
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
199 vdpaccess $8000, VDP_VRAM_WRITE
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
200 moveq #32, d0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
201 move.w #(64*64-1), d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
202 ploop:
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
203 move.l d0, (a0)
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
204 dbra d1, ploop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
205
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
206 move.l #$40000002, d3
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
207 move.l d3, (a1)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
208 move.l d3, base_cmd.w
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
209
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
210 lea Message(pc), a6
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
211 moveq #0, d0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
212 bsr print_string
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
213
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
214
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
215
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
216 move.w #$8144, (a1) ;enable display
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
217 move #$2300, sr
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
218
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
219
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
220 wait_forever
814
109ac52ffecd Menu cleanup with macros
Michael Pavone <pavone@retrodev.com>
parents: 791
diff changeset
221 stop #2500
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
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diff changeset
222 bra wait_forever
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
223
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
224 Message:
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Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
225 dc.b "Journey From Darkness - Strider Returns (U) [c][!].bin", $A
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
226 dc.b "Toejam & Earl in Panic on Funkotron (U) [!].bin", $A
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
227 dc.b "Fire Shark (U) [c][!].bin", $A
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
228 dc.b "Sonic and Knuckles (W) [!].bin", 0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
229
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
230 align 1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
231
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
232 ;Prints a null terminated string
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
233 ;a6 - pointer to string
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
234 ;a0 - VDP data port
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
235 ;d0 - base tile attribute
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
236 ;
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
237 ;Clobbers: d1.w, d2.w, d3.l
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
238 print_string:
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
239 lea widths(pc), a5
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
240 move.w x_pos.w, d2
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
241 move.l base_cmd.w, d3
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
242 .loop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
243 moveq #0, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
244 move.b (a6)+, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
245 beq .end
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
246 cmp.b #$A, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
247 beq .newline
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
248 tst.b (-32, a5, d1.w)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
249 beq .narrow
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
250 add.w d0, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
251 move.w d1, (a0)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
252 addq #2, d2
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
253 bra .loop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
254 .narrow
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
255 add.w d0, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
256 move.w d1, (a0)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
257 addq #1, d2
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
258 move.l d2, d1
791
60686f8d5e48 Add a couple of comments to menu.s68
Michael Pavone <pavone@retrodev.com>
parents: 790
diff changeset
259 ;switch to other plane
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
260 and.w #$FFFE, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
261 swap d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
262 eor.l #$20000000, d3
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
263 or.l d3, d1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
264 move.l d1, (a1)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
265 bra .loop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
266 .newline
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
267 moveq #0, d2
791
60686f8d5e48 Add a couple of comments to menu.s68
Michael Pavone <pavone@retrodev.com>
parents: 790
diff changeset
268 ;switch back to plane A
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
269 and.l #$DFFFFFFF, d3
791
60686f8d5e48 Add a couple of comments to menu.s68
Michael Pavone <pavone@retrodev.com>
parents: 790
diff changeset
270 ;skip to next row
789
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
271 add.l #$00800000, d3
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
272 move.l d3, (a1)
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
273 bra .loop
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
274 .end
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
275 move.w d2, x_pos.w
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
276 move.l d3, base_cmd.w
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
277 rts
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
278
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
279 align 1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
280 font:
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
281 incbin font_interlace_variable.tiles
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
282 fontend
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
283
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
284 widths:
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
285 dc.b 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
286 dc.b 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
287 dc.b 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
288 dc.b 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
41e83b38bdc8 Initial work on silly Genesis based menu
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
289 dc.b 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1
790
e8b14d5a5b5a Add something resembling a proper header
Michael Pavone <pavone@retrodev.com>
parents: 789
diff changeset
290
e8b14d5a5b5a Add something resembling a proper header
Michael Pavone <pavone@retrodev.com>
parents: 789
diff changeset
291 rom_end: