;DRUM GLOVE
;
;INDEX FINGER = PDL 2        SNARE
;MIDDLE FINGER = PDL 3       TOMTOM
;RING FINGER = PDL 0         CLOSED HIHAT
;PINKY = PDL 1               OPEN HIHAT
;THUMB = PB0                 BASS
;
READ4PDL EQU $6F00
PB0DATA  EQU $6F03
PB1DATA  EQU $6F04
PB2DATA  EQU $6F05
GC0DATA  EQU $6F06
GC1DATA  EQU $6F07
GC2DATA  EQU $6F08
GC3DATA  EQU $6F09
;
         ORG $6000
         JMP INIT
;
PB0CHNL  DFB $99
PB0NOTE  DFB 36    ;BASS
PB0VEL   DFB $40
PB1CHNL  DFB $99
PB1NOTE  DFB 49    ;CRASH CYMBAL
PB1VEL   DFB $40
;
GC0CHNL  DFB $99
GC0NOTE  DFB 42    ;CLOSED HIHAT
GC0VEL   DFB $40
GC1CHNL  DFB $99
GC1NOTE  DFB 46    ;OPEN HIHAT
GC1VEL   DFB $40
GC2CHNL  DFB $99
GC2NOTE  DFB 38    ;SNARE
GC2VEL   DFB $40
GC3CHNL  DFB $99
GC3NOTE  DFB 47    ;TOM-TOM
GC3VEL   DFB $40
;
CURRPB0  DFB $00
CURRPB1  DFB $00
CURRGC0  DFB $00
CURRGC1  DFB $00
CURRGC2  DFB $00
CURRGC3  DFB $00
PREVPB0  DFB $00
PREVPB1  DFB $00
PREVGC0  DFB $00
PREVGC1  DFB $00
PREVGC2  DFB $00
PREVGC3  DFB $00
;
INIT     LDA #$13
         STA $C0A8
         LDA #$11
         STA $C0A8
LOOP     JSR READ4PDL           ;READ 4 PADDLES AND 3 BUTTONS
         LDA PB0DATA
         STA CURRPB0
         LDA PB1DATA
         STA CURRPB1
         LDA GC0DATA
         STA CURRGC0
         LDA GC1DATA
         STA CURRGC1
         LDA GC2DATA
         STA CURRGC2
         LDA GC3DATA
         STA CURRGC3
;
         LDA CURRPB0
         CMP PREVPB0
         BEQ CHKPB1
         JMP PB0CHG
CHKPB1   LDA CURRPB1
         CMP PREVPB1
         BEQ CHKGC0
         JMP PB1CHG
CHKGC0   LDA CURRGC0
         CMP PREVGC0
         BEQ CHKGC1
         JMP GC0CHG
CHKGC1   LDA CURRGC1
         CMP PREVGC1
         BEQ CHKGC2
         JMP GC1CHG
CHKGC2   LDA CURRGC2
         CMP PREVGC2
         BEQ CHKGC3
         JMP GC2CHG
CHKGC3   LDA CURRGC3
         CMP PREVGC3
         BEQ GOBACK
         JMP GC3CHG
;
GOBACK   LDA CURRPB0
         STA PREVPB0
         LDA CURRPB1
         STA PREVPB1
         LDA CURRGC0
         STA PREVGC0
         LDA CURRGC1
         STA PREVGC1
         LDA CURRGC2
         STA PREVGC2
         LDA CURRGC3
         STA PREVGC3
         LDA $C000
         BMI DONE
         JMP LOOP
DONE     LDA $C010
         RTS
;
PB0CHG   LDA CURRPB0
         BNE PB0DOWN
;       
         LDA PB0CHNL
         JSR MIDIXMIT
         LDA PB0NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP CHKPB1
;
PB0DOWN  LDA PB0CHNL
         JSR MIDIXMIT
         LDA PB0NOTE
         JSR MIDIXMIT
         LDA PB0VEL
         JSR MIDIXMIT
         JMP CHKPB1
;
PB1CHG   LDA CURRPB1
         BNE PB1DOWN
;
         LDA PB1CHNL
         JSR MIDIXMIT
         LDA PB1NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP CHKGC0
;
PB1DOWN  LDA PB1CHNL
         JSR MIDIXMIT
         LDA PB1NOTE
         JSR MIDIXMIT
         LDA PB1VEL
         JSR MIDIXMIT
         JMP CHKGC0
;
GC0CHG   LDA CURRGC0
         BPL GC0DOWN
;
         LDA GC0CHNL
         JSR MIDIXMIT
         LDA GC0NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP CHKGC1
;
GC0DOWN  LDA GC0CHNL
         JSR MIDIXMIT
         LDA GC0NOTE
         JSR MIDIXMIT
         LDA GC0VEL
         JSR MIDIXMIT
         JMP CHKGC1
;
GC1CHG   LDA CURRGC1
         BPL GC1DOWN
;
         LDA GC1CHNL
         JSR MIDIXMIT
         LDA GC1NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP CHKGC2
;
GC1DOWN  LDA GC1CHNL
         JSR MIDIXMIT
         LDA GC1NOTE
         JSR MIDIXMIT
         LDA GC1VEL
         JSR MIDIXMIT
         JMP CHKGC2
;
GC2CHG   LDA CURRGC2
         BPL GC2DOWN
;
         LDA GC2CHNL
         JSR MIDIXMIT
         LDA GC2NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP CHKGC3
;
GC2DOWN  LDA GC2CHNL
         JSR MIDIXMIT
         LDA GC2NOTE
         JSR MIDIXMIT
         LDA GC2VEL
         JSR MIDIXMIT
         JMP CHKGC3
;
GC3CHG   LDA CURRGC3
         BPL GC3DOWN
;
         LDA GC3CHNL
         JSR MIDIXMIT
         LDA GC3NOTE
         JSR MIDIXMIT
         LDA #$00
         JSR MIDIXMIT
         JMP GOBACK
;
GC3DOWN  LDA GC3CHNL
         JSR MIDIXMIT
         LDA GC3NOTE
         JSR MIDIXMIT
         LDA GC3VEL
         JSR MIDIXMIT
         JMP GOBACK
;
MIDIXMIT STA $C0A9
WAITTDRE LDA $C0A8
         AND #$02
         BEQ WAITTDRE
         RTS
;