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Rev | Author | Line No. | Line |
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9 | daniel-mar | 1 | |
2 | ; Aysalia DOS Launcher |
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3 | ; Launches aydos1.gam and aydos2.gam |
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4 | ; Revision 2018-12-01 |
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5 | ; (C) 2018 Daniel Marschall, ViaThinkSoft |
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6 | |||
7 | .model small |
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8 | .stack 10h |
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9 | .data |
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10 | |||
11 | exename1 db "AYDOS1.GAM",0 |
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12 | exename2 db "AYDOS2.GAM",0 |
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13 | cmdargs db 0,'',0dh |
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14 | |||
15 | dummy_fcb db 36 dup(0) |
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16 | |||
17 | paramblk dw 0 ; use environment of parent |
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18 | dw cmdargs ; command line arguments |
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19 | dw 0 ; cmdargs_seg |
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20 | dw dummy_fcb ; fcb1 |
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21 | dw 0 ; fcb1_seg |
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22 | dw dummy_fcb ; fcb2 |
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23 | dw 0 ; fcb2_seg |
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24 | |||
25 | menu1 db '', 13, 10, '$' |
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26 | menu2 db '', 13, 10, '$' |
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27 | menu3 db '', 13, 10, '$' |
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28 | menu4 db '', 13, 10, '$' |
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29 | menu5 db ' Aysalia DOS',13,10,'$' |
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30 | menu6 db '', 13, 10, '$' |
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31 | menu7 db '', 13, 10, '$' |
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32 | menu8 db ' Welches Spiel soll gestartet werden?',13,10,'$' |
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33 | menu9 db '', 13, 10, '$' |
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34 | menu10 db ' Dr',81h,'cke eine der folgenden Tasten:',13,10,'$' |
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35 | menu11 db '', 13, 10, '$' |
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36 | menu12 db ' 1 Aysalia DOS I',13,10,'$' |
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37 | menu13 db ' 2 Aysalia DOS II',13,10,'$' |
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38 | menu14 db '', 13, 10, '$' |
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39 | menu15 db ' 9 Beenden',13,10,'$' |
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40 | menu16 db '', 13, 10, '$' |
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41 | menu17 db '', 13, 10, '$' |
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42 | menu18 db '', 13, 10, '$' |
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43 | |||
44 | gameover1 db '',13,10,'$' |
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45 | gameover2 db 'Spiel zu Ende!',13,10,'$' |
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46 | gameover3 db '',13,10,'$' |
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47 | |||
48 | .code |
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49 | |||
50 | clear_vga PROC |
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51 | mov ax, 0a000h |
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52 | mov es, ax |
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53 | xor di, di |
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54 | mov ax, 0 |
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55 | mov cx, 64000 |
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56 | rep stosb |
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57 | ret |
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58 | clear_vga ENDP |
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59 | |||
60 | setup_paramblk PROC |
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61 | mov ax, cs |
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62 | mov [paramblk + 4], ax ; cmdargs_seg |
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63 | mov [paramblk + 8], ax ; fcb1_seg |
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64 | mov [paramblk + 12], ax ; fcb2_seg |
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65 | ret |
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66 | setup_paramblk ENDP |
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67 | |||
68 | start: |
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69 | mov ax, @data ; moving base address of data to ax |
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70 | mov ds, ax ; moving contents of ax into ds |
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71 | ; data section now gets initialized |
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72 | |||
73 | ; Reduce size of own application to give the called applications more space |
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74 | mov ah, 4ah |
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75 | mov al, 00h |
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76 | mov bx, 100 ; 100 paragraphs a 16 byte = 1600 byte |
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77 | ; EXE size is 1140 byte |
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78 | int 21h |
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79 | |||
80 | menu: |
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81 | ; Video Mode VGA 12 |
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82 | mov ah, 0 |
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83 | mov al, 12h |
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84 | int 10h |
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85 | |||
86 | ; Flush keyboard buffer |
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87 | mov ah, 0ch |
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88 | mov al, 0 |
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89 | int 21h |
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90 | |||
91 | ; Print message |
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92 | mov ah, 9 |
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93 | lea dx, menu1 |
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94 | int 21h |
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95 | lea dx, menu2 |
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96 | int 21h |
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97 | lea dx, menu3 |
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98 | int 21h |
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99 | lea dx, menu4 |
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100 | int 21h |
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101 | lea dx, menu5 |
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102 | int 21h |
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103 | lea dx, menu6 |
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104 | int 21h |
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105 | lea dx, menu7 |
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106 | int 21h |
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107 | lea dx, menu8 |
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108 | int 21h |
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109 | lea dx, menu9 |
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110 | int 21h |
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111 | lea dx, menu10 |
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112 | int 21h |
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113 | lea dx, menu11 |
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114 | int 21h |
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115 | lea dx, menu12 |
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116 | int 21h |
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117 | lea dx, menu13 |
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118 | int 21h |
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119 | lea dx, menu14 |
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120 | int 21h |
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121 | lea dx, menu15 |
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122 | int 21h |
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123 | lea dx, menu16 |
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124 | int 21h |
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125 | lea dx, menu17 |
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126 | int 21h |
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127 | lea dx, menu18 |
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128 | int 21h |
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129 | |||
130 | retry: |
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131 | ; Query keyboard input |
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132 | mov ah, 07h ; Direct character input, without echo |
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133 | int 21h |
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134 | cmp al, '1' |
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135 | je prog1 |
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136 | cmp al, '2' |
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137 | je prog2 |
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138 | cmp al, '9' |
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139 | je ende |
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140 | |||
141 | ; Invalid input |
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142 | jmp retry |
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143 | |||
144 | prog1: |
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145 | ; Clear screen |
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146 | call clear_vga |
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147 | |||
148 | ; Setup parameter block for the EXEC command |
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149 | call setup_paramblk |
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150 | |||
151 | ; Start game 1 |
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152 | mov ah, 4bh ; execute |
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153 | mov al, 00h ; load and execute |
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154 | mov bx, paramblk |
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155 | lea dx, exename1 |
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156 | int 21h |
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157 | |||
158 | ; Notify the player that the game is finished |
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159 | jmp gameover |
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160 | |||
161 | prog2: |
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162 | ; Clear screen |
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163 | call clear_vga |
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164 | |||
165 | ; Setup parameter block for the EXEC command |
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166 | call setup_paramblk |
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167 | |||
168 | ; Start game 2 |
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169 | mov ah, 4bh ; execute |
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170 | mov al, 00h ; load and execute |
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171 | mov bx, paramblk |
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172 | lea dx, exename2 |
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173 | int 21h |
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174 | |||
175 | ; Notify the player that the game is finished |
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176 | jmp gameover |
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177 | |||
178 | gameover: |
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179 | ; Print message |
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180 | mov ah, 9 |
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181 | lea dx, gameover1 |
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182 | int 21h |
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183 | lea dx, gameover2 |
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184 | int 21h |
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185 | lea dx, gameover3 |
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186 | int 21h |
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187 | |||
188 | ; Sleep approx 5 seconds |
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189 | mov ah, 86h |
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190 | mov cx, 004bh |
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191 | mov dx, 4000h |
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192 | int 15h |
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193 | |||
194 | ; Go to the menu |
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195 | jmp menu |
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196 | |||
197 | ende: |
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198 | ; Reset video mode to DOS default |
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199 | mov ah, 0 |
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200 | mov al, 3 |
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201 | int 10h |
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202 | |||
203 | ; Return to DOS |
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204 | mov ah, 4ch |
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205 | mov al, 00h |
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206 | int 21h |
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207 | |||
208 | end start |