C64 Software  <  SCA: The C64 Software Collection / QUEDEX INTRO.S

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1000              ORG 20000
1010              SEI
1020              LDA #54
1030              STA 1
1040              JMP $AA00
1050              ;
1060              ORG $AA00
1070 ZEROFREE     EQU 80
1080 SCOLLBTS     EQU ZEROFREE
1090 SCOLLSPEED   EQU ZEROFREE+1
1100 TEXT         EQU ZEROFREE+2
1110 ACTUAL       EQU ZEROFREE+4
1120 RRKIND       EQU ZEROFREE+5
1130 SOLLSBLINKEN EQU ZEROFREE+6
1140 BLINKA       EQU ZEROFREE+7
1150 COUNTER      EQU ZEROFREE+8
1160              ;
1170 DISCARD      EQU 2066 ;NICHT 2064!
1180              ;
1190 SOUNDINIT    EQU $3009
1200 SOUND2       EQU $300F
1210              ;
1220 BILDSCHIRM   EQU $2400
1230 SCOLLADR     EQU BILDSCHIRM+320
1240 CHAR         EQU $2000
1250 FARBWURST    EQU 828
1260              ;
1270              ;
1280              ;
1290 INIT         LDA #0
1300              STA 53280
1310              STA 646
1320              JSR $E544
1330              ;
1340              LDA #127
1350              STA 56333
1360              SEI
1370              LDX #<INTERRUPT
1380              LDY #>INTERRUPT
1390              STX 788
1400              STY 789
1410              LDX #$64
1420              LDY #$3E
1430              STX 792
1440              STY 793
1450              ;
1460              LDA #20
1470              STA 53266
1480              LDA #91
1490              STA 53265
1500              LDA #129
1510              STA 53274
1520              LDA #152
1530              STA 53272
1540              STA 657
1550              STA 650
1560              ;
1570              LDA #1
1580              STA COUNTER
1590              LDA #6
1600              STA ACTUAL
1610              ;
1620              LDA #1
1630              STA SCOLLSPEED
1640              STA BLINKA
1650              STA SOLLSBLINKEN
1660              JSR DOSCOINIT
1670              JSR SOUNDINIT
1680              LDA #1
1690              STA 53273
1700              CLI
1710              ;
1720              ;
1730 INPUT        LDX 56321
1740              INX
1750              BEQ INPUT
1760              ;
1770              SEI
1780              LDY #127
1790              STY $DD0D ;DISABLE
1800              INY
1810              STY $DD0E ;TIMER A
1820              LDX #0
1830              STX 53274 ;RASTER OFF
1840              STX 54296 ;VOL OFF
1850              STX 53265 ;PIC OFF
1860              INX
1870              STX 53273 ;REQ OFF
1880              INY
1890              STY 56333 ;TIMER ON
1900              ;
1910              LDA #$34
1920              STA 1
1930              LDY #0
1940              STY 252
1950              STY 254
1960              LDA #$C0
1970              STA 253
1980              LDA #$20
1990              STA 255
2000              LDX #32
2010 SHYB         LDA (252),Y
2020              STA (254),Y
2030              INC 1
2040              INC 53280
2050              DEC 1
2060              INY
2070              BNE SHYB
2080              INC 253
2090              INC 255
2100              DEX
2110              BNE SHYB
2120              ;
2130              TXS       ;CLR STACK
2140              LDA #54   ;KERNEL ON
2150              STA 1
2160              JSR $FD15 ;VECS INIT
2170              JMP DISCARD
2180              ;
2190              ;
2200 INTERRUPT    LDA #1
2210              STA 53273
2220              ;
2230              LDX #49
2240              LDY #49
2250 MAIN         LDA FARBWURST,Y
2260              ;
2270 WARTEN       CPX 53266
2280              BCS WARTEN
2290              ;
2300              STA 53281
2310              INX
2320              DEY
2330              BPL MAIN
2340              JSR SCOLL
2350              JSR BLINKER
2360              JSR CYCLE
2370              JSR SOUND2
2380              JMP $EA31
2390              ;
2400              ;
2410 CYCLE        DEC COUNTER
2420              BEQ CYCLEJA
2430              RTS
2440              ;
2450 CYCLEJA      LDA #2
2460              STA COUNTER
2470              ;
2480              LDY #1
2490              LDX FARBDAT+1
2500 CYCLE1       LDA FARBDAT+1,Y
2510              STA FARBDAT,Y
2520              STA FARBWURST,Y
2530              INY
2540              CPY #62
2550              BNE CYCLE1
2560              STX FARBDAT+62
2570              ;
2580              ;
2590 FARBRAUF     LDA ACTUAL
2600 NORMAL       LDY #13
2610              JSR CONTROUL
2620 LOS          LDA FARBLINE,Y
2630              PHA
2640              TYA
2650              CLC
2660              ADC ACTUAL
2670              TAX
2680              PLA
2690              STA FARBWURST-9,X
2700              DEY
2710              BPL LOS
2720              RTS
2730              ;
2740 CONTROUL     LDA RRKIND
2750              AND #1
2760              BEQ HINAB
2770              INC ACTUAL
2780              INC ACTUAL
2790              LDA ACTUAL
2800              CMP #60
2810              BEQ RUNTERMACH
2820              RTS
2830 RUNTERMACH   INC RRKIND
2840              RTS
2850              ;
2860 HINAB        DEC ACTUAL
2870              DEC ACTUAL
2880              BEQ RAUFMACH
2890              RTS
2900 RAUFMACH     DEC RRKIND
2910              RTS
2920              ;
2930              ;
2940 SCOLL        LDA #112
2950              STA 53281
2960              LDX SCOLLBTS
2970 SCOLL0       CMP 53266
2980              BCS SCOLL0
2990              STX 53270
3000              NOP
3010              LDA #1
3020              STA 53281
3030              ;
3040 SCOLL1       LDA 53266
3050              CMP #124
3060              BCC SCOLL1
3070              LDA #200
3080              STA 53270
3090              ;
3100              LDA SCOLLSPEED
3110 SCOLL2       PHA
3120              JSR SCOLLIT
3130              PLA
3140              SEC
3150              SBC #1
3160              BNE SCOLL2
3170              ;
3180              RTS
3190              ;
3200              ;
3210 SCOLLIT      DEC SCOLLBTS
3220              BMI DOSCOLLIT
3230              RTS
3240              ;
3250 DOSCOLLIT    LDA #7
3260              STA SCOLLBTS
3270              ;
3280              LDX #0
3290 DOSCO1       LDA SCOLLADR+1,X
3300              STA SCOLLADR,X
3310              INX
3320              CPX #39
3330              BNE DOSCO1
3340              ;
3350 DOSCO2       LDY #0
3360              LDA (TEXT),Y
3370              BNE DOSCO3
3380              ;
3390 DOSCOINIT    LDA #<TEXTTAB
3400              STA TEXT
3410              LDA #>TEXTTAB
3420              STA TEXT+1
3430              BNE DOSCO2
3440              ;
3450 DOSCO3       INC TEXT
3460              BNE DOSCO4
3470              INC TEXT+1
3480              ;
3490 DOSCO4       CMP #245
3500              BCC DOSCO5
3510              ;
3520              SEC
3530              SBC #244
3540              STA SCOLLSPEED
3550              JMP DOSCO2
3560              ;
3570 DOSCO5       STA SCOLLADR+39
3580              RTS
3590              ;
3600 BLINKER      DEC SOLLSBLINKEN
3610              BEQ BLINK
3620              RTS
3630 BLINK        LDA #4
3640              STA SOLLSBLINKEN
3650              LDX BLINKA
3660              LDA COLA,X
3670              STA 53282
3680              LDA COLB,X
3690              STA 53283
3700              LDA COLC,X
3710              STA 53284
3720              DEX
3730              STX BLINKA
3740              BMI BLINKINIT
3750              RTS
3760 BLINKINIT    LDA #15
3770              STA BLINKA
3780              RTS
3790              ;
3800 FARBDAT      DFB 0,0,11,11,12,12,15,15,1,1,15,15,12,12,11,11,0,0
3810              DFB 6,6,14,14,3,3,1,1,3,3,14,14,6,6,0,0
3820              DFB 2,2,10,10,7,7,1,1,7,7,10,10,2,2,0,0
3830              ;DFB 5,5,3,3,13,13,1,1,13,13,3,3,5,5,0,0
3840              DFB 9,9,8,8,7,7,1,1,7,7,8,8,9,9
3850              ;
3860 FARBLINE     DFB 5,5,3,3,13,13,1,1,13,13,3,3,5,5
3870              ;
3880 COLA         DFB 2,10,7,1,7,10,2,0,6,14,3,3,3,14,6,0
3890 COLB         DFB 9,5,13,1,13,5,9,0,2,10,7,1,7,10,2,0
3900 COLC         DFB 2,10,7,1,7,10,2,0,11,12,15,1,15,12,11,0
3910              ;
3920              ;
3930 TEXTTAB      DFB 245,""
3940              DFB 246,""
3950              DFB ""
3960              DFB 247,""
3970              DFB ""
3980              DFB ""
3990              DFB 248,""
4000              DFB ""
4010              DFB "
4020              DFB ""
4030              DFB "
4040              DFB ""
4050              DFB "
4060              DFB ""
4070              DFB""
4080              DFB ""
4090              DFB "",0
4100 SCHL         DFB 0
4110              JMP $EA31
READY.