0000- 4 ; 0000- 5 ; SPINNER IS A REACTION TIMING GAME USING '6502 GAMES' HARDWARE, AN LED CHASES 0000- 6 ; AROUND THE LED CUBE AND YOU SHOULD TRY TO HIT THE CORRESPONDING BUTTON. 0000- 7 ; BOARD SHOULD ; BE JUMPERED WITH VIA CHIPS AT THE ADDRESSES SPECIFIED BELOW. 0000- 8 ; OTHER THAN THAT THE CODE IS SHOULD BE UNCHANGED FROM THE BOOK THOUGH THERE 0000- 9 ; WILL BE SOME DIFFERENCES DUE TO ASSEMBLER USED. 0000- 10 ; C000- 11 VIA1 .EQ $C000 CC00- 12 VIA3 .EQ $CC00 0000- 13 0200- 14 .OR $0200 0200- 15 .TA $0200 0200- 16 BEGIN .IN game.asm 0200- I 1 ; 'SPINNER' 0200- I 2 ; PROGRAM TO TEST REACTION TIME OF PLAYER. BLIP OF LIGHT SPINS AROUND EDGE OF 0200- I 3 ; 3X3 LED MATRIX, AND USER MUST PRESS CORRESPONDING KEY. IF, AFTER A NUMBER OF 0200- I 4 ; SPINS, CORRECT KEY HAS NOT BEEN PRESSED, BLIP SPINS SLOWER. IF CORRECT KEY 0200- I 5 ; HAS BEEN PRESSED, BLIP SPINS FASTER. ALL LEDS LIGHT WHEN SUCCESSFUL KEYPRESS 0200- I 6 ; OCCURS ON MAXIMUM SPEED. 0200- I 7 ; 0200- I 8 ; I/O: 0200- I 9 ; C000- I 10 PORT1B .EQ VIA1 ; PORT B C001- I 11 PORT1A .EQ VIA1+1 ; PORT A C002- I 12 DDR1B .EQ VIA1+2 ; PORT B DATA DIRECTION REGISTER C003- I 13 DDR1A .EQ VIA1+3 ; PORT A DATA DIRECTION REGISTER CC00- I 14 PORT3B .EQ VIA3 ; PORT B CC01- I 15 PORT3A .EQ VIA3+1 ; PORT A CC02- I 16 DDR3B .EQ VIA3+2 ; PORT B DATA DIRECTION REGISTER CC03- I 17 DDR3A .EQ VIA3+3 ; PORT A DATA DIRECTION REGISTER 0200- I 18 ; 0200- I 19 ; VARIABLE STORAGE. 0200- I 20 ; 0000- I 21 ZP .EQ $00 0000- I 22 DURAT .EQ ZP ; DURATION OF INTER-MOVEMENT DELAY. 0001- I 23 DIFCLT .EQ ZP+1 ; DIFFICULTY LEVEL. 0002- I 24 DNTST .EQ ZP+2 ; SET TO $01 IF KEY DOWN AT START OF 0200- I 25 ; INTER-MOVEMENT DELAY. 0200- I 26 ; 0200- I 27 ; MAIN PROGRAM 0200- I 28 ; 0200-A9 FF I 29 ( 2) START LDA #$FF ; SET I/O REGISTERS. 0202-8D 03 C0 I 30 ( 4) STA DDR1A 0205-8D 02 C0 I 31 ( 4) STA DDR1B 0208-8D 02 CC I 32 ( 4) STA DDR3B 020B-A9 08 I 33 ( 2) LDA #8 020D-85 01 I 34 ( 2) STA DIFCLT ; SET DIFFICULTY 020F-8D 03 CC I 35 ( 4) STA DDR3A ; SET KEYSTROBE PORT. 0212-A0 00 I 36 ( 2) NWGME LDY #0 ; RESET LOOP/BLIP COUNTER. 0214-A9 00 I 37 ( 2) LOOP LDA #0 0216-85 02 I 38 ( 2) STA DNTST ; CLEAR KEYDOWN INDICATOR. 0218-8D 00 C0 I 39 ( 4) STA PORT1B ; CLEAR HI LED PORT. 021B-98 I 40 ( 2) TYA ; USE LOWER 3 BITS OF MAIN COUNTER 021C-29 07 I 41 ( 2) AND #$07 ; AS INDEX TO FIND LED PATTERN 021E-AA I 42 ( 2) TAX ; IN TABLE OF PATTERNS. 021F-BD 95 02 I 43 ( 4*) LDA LTABLE,X ; GET PATTERN FOR LED TO BE TURNED ON 0222-8D 01 C0 I 44 ( 4) STA PORT1A ; STORE IN LED PORT. 0225-D0 05 I 45 (2**) BNE CHECK ; IF PATTERN <> 0, SKIP. 0227-A9 01 I 46 ( 2) LDA #1 ; PATTERN=0, SO SET HI BIT. 0229-8D 00 C0 I 47 ( 4) STA PORT1B 022C-BD 9D 02 I 48 ( 4*) CHECK LDA KYTBL,X ; GET KEY# TO TEST FOR. 022F-8D 00 CC I 49 ( 4) STA PORT3B ; STORE IN KEYPORT 0232-2C 01 CC I 50 ( 4) BIT PORT3A ; STROBE HI? 0235-30 04 I 51 (2**) BMI DELAY ; IF NOT, SKIP. 0237-A9 01 I 52 ( 2) INVALD LDA #01 ; STROBE HI; SET KEY DOWN MARKER. 0239-85 02 I 53 ( 2) STA DNTST 023B-A9 80 I 54 ( 2) DELAY LDA #$80 ; GET # OF LOOP CYCLES (DELAY LENGTH) 023D-85 00 I 55 ( 2) STA DURAT 023F-A5 01 I 56 ( 3) DL1 LDA DIFCLT ; MULTIPLY DIFFICULTY COUNTER 0241-0A I 57 ( 2) ASL A ; BY FOUR TO DETERMINE DELAY 0242-0A I 58 ( 2) ASL A ; LENGTH. 0243-AA I 59 ( 2) TAX 0244-26 02 I 60 ( 5) DL2 ROL DNTST ; DELAY ACCORDING TO DIFCLT. 0246-66 02 I 61 ( 5) ROR DNTST 0248-CA I 62 ( 2) DEX 0249-D0 F9 I 63 (2**) BNE DL2 ; LOOP UNTIL COUNT = 0 024B-A5 02 I 64 ( 3) LDA DNTST ; GET KEY DOWN FLAG. 024D-D0 05 I 65 (2**) BNE NOTST ; IF KEY WAS DOWN AT BEGINNING OF 024F- I 66 ; DELAY, DON'T TEST IT. 024F-2C 01 CC I 67 ( 4) BIT PORT3A ; CHECK KEY STROBE 0252-10 19 I 68 (2**) BPL HIT ; KEY HAS CLOSED DURING DELAY: HIT. 0254-C6 00 I 69 ( 5) NOTST DEC DURAT ; COUNT DELAY LOOP DOWN. 0256-D0 E7 I 70 (2**) BNE DL1 ; LOOP IF NOT 0. 0258-C8 I 71 ( 2) INY ; INCREMENT MAIN SPIN COUNTER. 0259-D0 B9 I 72 (2**) BNE LOOP ; IF 32 LOOPS NOT DONE, DO NEXT LOOP EASIER 025B-A6 01 I 73 ( 3) LDX DIFCLT ; NO HITS THIS TIME, MAKE NEXT EASIER. 025D-E8 I 74 ( 2) INX 025E-8A I 75 ( 2) TXA ; MAKE SURE DIFFICULTY DOES NOT 025F-C9 10 I 76 ( 2) CMP #16 ; EXCEED 15. 0261-D0 02 I 77 (2**) BNE OK 0263-A9 0F I 78 ( 2) LDA #15 0265-85 01 I 79 ( 2) OK STA DIFCLT 0267-20 82 02 I 80 ( 6) JSR WAIT ; PAUSE A BIT 026A-4C 12 02 I 81 ( 3) JMP NWGME ; START NEW ROUND. 026D-20 82 02 I 82 ( 6) HIT JSR WAIT ; PAUSE A BIT. 0270-C6 01 I 83 ( 5) DEC DIFCLT ; MAKE NEXT GAME HARDER. 0272-D0 9E I 84 (2**) BNE NWGME ; IF DIFFICULTY NOT 0 (HARDEST), PLAY NEXT GAME. 0274-A9 FF I 85 ( 2) LDA #$FF ; PLAYER HAS MADE IT TO TOP 0276-8D 01 C0 I 86 ( 4) STA PORT1A ; DIFFICULTY LEVEL, LIGHT ALL LEDS. 0279-8D 00 C0 I 87 ( 4) STA PORT1B 027C-20 82 02 I 88 ( 6) JSR WAIT ; PAUSE A BIT. 027F-4C 00 02 I 89 ( 3) JMP START ; PLAY ANOTHER GAME. 0282- I 90 ; 0282- I 91 ; SUBROUTINE 'WAIT' 0282- I 92 ; SHORT DELAY. 0282- I 93 ; 0282-A0 FF I 94 ( 2) WAIT LDY #$FF 0284-A2 FF I 95 ( 2) LP1 LDX #$FF 0286-66 00 I 96 ( 5) LP2 ROR DURAT 0288-26 00 I 97 ( 5) ROL DURAT 028A-66 00 I 98 ( 5) ROR DURAT 028C-26 00 I 99 ( 5) ROL DURAT 028E-CA I 100 ( 2) DEX 028F-D0 F5 I 101 (2**) BNE LP2 0291-88 I 102 ( 2) DEY 0292-D0 F0 I 103 (2**) BNE LP1 0294-60 I 104 ( 6) RTS 0295- I 105 ; 0295- I 106 ; TABLE OF PATTERNS TO BE SENT TO LED MATRIX AT EACH LOOP COUNTM SET FOR 0295- I 107 ; CLOCKWISE ROTATION STARTING AT LED #1. 0295- I 108 ; 0295-01 02 04 20 00 80 40 08 I 109 LTABLE .HS 01.02.04.20.00.80.40.08 029D- I 110 029D- I 111 ; 029D- I 112 ; TABLE OF PATTERNS TO BE SENT TO KEYBOARD TO TEST IF LEDS ARE ON AT EACH 029D- I 113 ; LOOP COUNT. 029D- I 114 ; 029D-01 02 03 06 09 08 07 04 I 115 KYTBL .HS 01.02.03.06.09.08.07.04