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main.a
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; ACME 0.96.4
;
; [binary MAX Size: (16+16+12)*256 = 11264 bytes]
;
; 'DONUT': Fast Loader demonstration!
; 03/2021
;
; Code: GROUiK [FRENCH TOUCH]
; GFX: Donut from Andy Sloane's works
; Music: BFOX
;
; v0.09 : "universal" (IIe/IIc) version with vblank sync (using floating bus)
;
!cpu 6502
!convtab "a2txt.bin" ;
!sl "lbl_main.txt"
; include
!source "floadc_lbl.a"
*= $D000 ; ORG = $D000 (RAM Langage Card)
; =============================================================================
; SYSTEM/CONSTANT
VERTBLANK = $C019
; =============================================================================
; ZERO PAGE
OUT1 = $10 ; +$11
OUT2 = $12 ; +$13
oldREGD = $14
CursorX = $15
CursorCount = $16
CursorChar = $17
; decompLZ4
src1 = $30 ; +$31
src2 = $32 ; +$33
dest = $34 ; +$35
lenL = $36
lenH = $37
token = $38
Index_Loader = $40 ;
TimeAH = $41 ;
iTFrames = $42
CountLoader = $43
; USED by PLAYER PYM + INT [ZP $4B-$9C]
; -------------------------------------
saveA = $4B
saveY = $4C
saveX = $4D
Tick = $4E ; +$4F
nREG0 = $50
vREG0 = $51
dREG0 = $52 ; +$53
nREG1 = $54
vREG1 = $55
dREG1 = $56 ; +$57
nREG2 = $58
vREG2 = $59
dREG2 = $5A ; +$5B
nREG3 = $5C
vREG3 = $5D
dREG3 = $5E ; +$5F
nREG4 = $60
vREG4 = $61
dREG4 = $62 ; +$63
nREG5 = $64
vREG5 = $65
dREG5 = $66 ; +$67
nREG6 = $68
vREG6 = $69
dREG6 = $6A ; +$6B
nREG7 = $6C
vREG7 = $6D
dREG7 = $6E ; +$6F
nREG8 = $70
vREG8 = $71
dREG8 = $72 ; +$73
nREG9 = $74
vREG9 = $75
dREG9 = $76 ; +$77
nREGA = $78
vREGA = $79
dREGA = $7A ; +$7B
nREGB = $7C
vREGB = $7D
dREGB = $7E ; +$7F
nREGC = $80
vREGC = $81
dREGC = $82 ; +$83
nREGD = $84
vREGD = $85
dREGD = $86 ; +$87
count1Pat = $88
indexPat = $89
iREG0 = $8A
iREG1 = $8B
iREG2 = $8C
iREG3 = $8D
iREG4 = $8E
iREG5 = $8F
iREG6 = $90
iREG7 = $91
iREG8 = $92
iREG9 = $93
iREGA = $94
iREGB = $95
iREGC = $96
iREGD = $97
bMark = $98
; =================================================================================================
MAIN
!zone
; Music Loading
LDA #$02
STA TRACK_TO_REACH
LDA #00
STA BUFFER
STA FIRSTSEC
LDA #$40
STA BUFFER+1
LDA #21
STA COUNT_TOTAL
JSR FLOAD
LDA DRVOFF
; decomp MUSIC
LDA #<($4000+16) ; (+16 => skip LZ4 header)
STA src2
LDA #>($4000+16)
STA src2+1
LDA #<($6000)
STA dest
LDA #>($6000)
STA dest+1
JSR DECOMPLZ4
; inir some VAR
LDA #$20
STA CursorChar
LDA #00
STA iTFrames
STA CursorCount
STA Tick
STA Tick+1
STA bMark
STA bChangeP
; =================================================================================================
Init_MB ; init Mockingboard (SLOT#4)
!zone
STA OUT2
LDA #01
STA OUT1
LDA #$C4
STA OUT2+1
STA OUT1+1
; init MB (6522/AY1) / (6522/AY2)
LDA #$FF
STA $C403
STA $C483
LDA #$07
STA $C402
STA $C482
; ---------
; clean REGISTER AY1 / AY2
LDA #$00
STA $C400
STA $C480
LDA #$04
STA $C400
STA $C480
; ---------
; init player
LDA #PATTERNSIZE
STA count1Pat
LDA #00
STA indexPat
TAX ; = 0 - init with pattern 0
JSR INIT_PATTERN
; -------------------------------------
Init_INT ; init interrupt
!zone
; IIe/IIc
LDA #<INT_ROUT1
STA $FFFE
LDA #>INT_ROUT1
STA $FFFF
SEI ; inhib
; init INT - T1/6522/1
LDA #%01000000 ; T1 Continuous Interrupt (FREE MODE) / PB7 disabled / (T2 One Shot - don't care here)
STA $C40B ; Auxiliary Control Register
LDA #%11000000 ; Enable Timer 1 (only)
STA $C40E ; Interrupt Enable Register
JMP SYNC
; =================================================================================================
; 0000000000111111111122222222223333333333
; 0123456789012345678901234567890123456789
TEXT0 !text "Here is a demonstration of our new",00
TEXT1 !text "FAST LOADER, which reads data from",00
TEXT2 !text "disk at a decent speed...",00
TFIRSTSEC !byte $18,$10,$08,$00
; FRAMEMAX = 3072
TLFrames !byte <358, <2328, <3072
THFrames !byte >358, >2328, >3072
; =================================================================================================
!align 255,00 ; align here to avoid crossing page
SYNC
!zone
; wait until first line of TEXT (first 8 lines of display)
; detection of the floating bus must be > 25 cycles to avoid "false positive"
; pos = (values "for" AppleWin -> data is read at first cycle of LDA!)
.L1 LDA $C051 ; read $0A pos ; $A + 3 = $D
; WARNING: $C070 seems not to work with Apple IIc with MB4C - So using $C051 to read the floating bus
CMP #$06 ; "F" (inverse) ; $E
BNE .L1 ; $10
LDA ($AC,X) ; dummy ; $12
LDA ($AC,X) ; dummy ; $18
LDA ($AC,X) ; dummy ; $1E
LDA $AC ; dummy ; $24
LDA $C051 ; read pos $27 ; $27
CMP #$3A ; ":" (inverse) ;
BNE .L1 ;
; waiting 65 cycles - 08 (already passed) = 57 to go to next line and read pos $12 again !
debug
LDA token ; dummy ; + 3
.L2 ; = 11 cycles
LDX #$0A
.WL1 DEX
BNE .WL1 ; + 51 cycles
LDA token ; dummy ; 3
; = 11 + 51 + 3 = 65
LDA $C051 ; read pos $27 again (for next lines) ; 4
CMP #$3A ; ":" inverse ? ; 2
BNE + ; 2 (/3)
JMP .L2 ; 3
; = 11 (we loop again until we don't get a ":" inverse)
+ ; here we are at the pos $27 of the 9th lines of display (first text "line" was passed)
; no need to do fine synchro so we wait 312 lines (PAL) - 11 lines to go to the penultimate lines of VBL
LDY #255
JSR WAIT65
LDY #46
JSR WAIT65 ; 46+255 = 301 lines
; set INT
LDX #<(20280-2) ; PAL refresh rate/cycles
LDY #>(20280-2)
STX $C404
STY $C405
; ==================================================================================================
INTROTEXT
LDX #00
- STX lenL ; tmp
LDA TableTextL,X
STA src1
LDA TableTextH,X
STA src1+1
LDA TableVML,X
STA dest
LDA TableVMH,X
STA dest+1
JSR SetText
LDA #$A0
STA (dest),Y
LDX lenL
INX
CPX #3
BNE -
STY CursorX
CLI ; blinking cursor only here (player desactivated)
JSR WAITROUTINE
LDA #$2C
STA MODBLINK ; stop cursor blinking
LDA #$A0
STA (dest),Y ; erase cursor
LDA #<TEXT3
STA src1
LDA #>TEXT3
STA src1+1
LDA TableVML+3
STA dest
LDA TableVMH+3
STA dest+1
JSR SetText
LDA #$A0
STA (dest),Y
LDA DRVON ; drive on again
STY CursorX
SEI
LDA #$20
STA MODBLINK ; run cursor blinking again
LDA #$20
STA MODPLAYER ; player!
CLI ; Music!
LOOP1 LDA bMark ; bmark1
BEQ LOOP1
LDA #00
STA bMark ; reinit
SEI
LDA #<INT_ROUT2
STA $FFFE
LDA #>INT_ROUT2
STA $FFFF
LDA #$D0
STA dest
LDA #$0B
STA dest+1
LDA #128+1 ; 128 frames for the donut!
STA CountLoader
LDA #03
STA TRACK_TO_REACH ; track #3 for the first donut
STA Index_Loader ; from 3 to 0
LOOP2 DEC CountLoader
BEQ .end_reading
LDA #08 ; # of sectors for each donut
STA COUNT_TOTAL ; compteur principal (décrémenter à chaque lecture)
LDX Index_Loader
BPL + ; all donuts (4) read from one track ?
LDX #03 ; reinit
INC TRACK_TO_REACH ; + next track
+ LDA TFIRSTSEC,X
STA FIRSTSEC
DEX
STX Index_Loader
LDA #00
STA BUFFER
MODPAGE2 LDA #08 ; first load => PAGE2
STA BUFFER+1
LDA MODPAGE2+1
EOR #($04XOR$08)
STA MODPAGE2+1
LOOP2B LDA $C405
CMP #$0A
BCC LOOP2B ; A < $10 -> no more time to load one sector -> loop again
SEI
JSR READ
CLI
LDA State_Loader
BPL LOOP2B
JMP LOOP2
.end_reading SEI
LDA DRVOFF
LDA #$2C
STA MODBLINK ; stop cursor blinking
LDA #<INT_ROUT1
STA $FFFE
LDA #>INT_ROUT1
STA $FFFF
CLI
LDY #00
LDA #$A0
- STA $400,Y
STA $500,Y
STA $600,Y
STA $700,Y
DEY
BNE -
LDA $C054 ; back to page1
LOOP3 LDA bMark
BEQ LOOP3 ; bmark2
LDA #00
STA bMark ; reinit
ENDTEXT
LDX #04
- STX lenL ; tmp
LDA TableTextL,X
STA src1
LDA TableTextH,X
STA src1+1
LDA TableVML,X
STA dest
LDA TableVMH,X
STA dest+1
JSR SetText
LDA #$A0
STA (dest),Y
LDX lenL
INX
CPX #07
BNE -
STY CursorX
LDA #$20
STA MODBLINK ; run cursor blinking again
LOOP4 LDA bMark ; bmark3
BEQ LOOP4
LDA #$2C
STA MODPLAYER ; disable player!
STA MODBLINK ; disable blinking!
; clean REGISTER AY1 / AY2 => sound off
LDA #$00
STA $C400
STA $C480
LDA #$04
STA $C400
STA $C480
; ---------
LDA #$A0
LDY #$00
- STA $400,Y
STA $500,Y
STA $600,Y
STA $700,Y
DEY
BNE -
SEI ; dirty way to reboot without stop INT ;)
JSR WAITROUTINE
LDX #8
- LDA DataReboot,X
STA $300,X
DEX
BPL -
JMP $300 ; reboot/reload
; =================================================================================================
BlinkCursor
!zone
INC CursorCount ;
LDA CursorCount
CMP #20
BCC +
LDA CursorChar
EOR #$80 ; $20 <-> $A0
STA CursorChar
LDA #00
STA CursorCount
+ LDY CursorX
LDA CursorChar
STA (dest),Y
RTS
; =================================================================================================
INT_ROUT1
STA saveA ; on sauve A
STX saveX ; on sauve X
STY saveY ; on sauve Y
MODPLAYER BIT PLAYER_PYM ; music! (one tick)
MODBLINK JSR BlinkCursor
BIT $C404 ; int again (6522)
LDA saveA
LDY saveY
LDX saveX
RTI
; =================================================================================================
INT_ROUT2
!zone
; 2<->9 cycles (according to opcode when INT occured)
; + 7 cycles (6502 INT Sequence)
; = 9/16 cycles passed since INT occured!
; --------------------------------------------------------------------
STA saveA ; on sauve A
STX saveX ; on sauve X
STY saveY ; on sauve Y
LDA bChangeP
BEQ +
; display TRACK #
LDY #$24
LDA #'T'
STA (dest),Y
INY
LDA #'$'
STA (dest),Y
INY
LDA TRACK_TO_REACH ; get current TRACK#
STA token ; save
LSR
LSR
LSR
LSR
TAX
LDA THexa,X
STA (dest),Y
INY
LDA token
AND #$0F
TAX
LDA THexa,X
STA (dest),Y
LDA dest+1
EOR #($04XOR$08)
STA dest+1
; --------------
MODPAGE BIT $C055
LDA MODPAGE+1
EOR #($54XOR$55)
STA MODPAGE+1
LDA #00
STA bChangeP
+ JSR PLAYER_PYM ; music! (one tick)
LDA State_Loader
BNE +
; State_Loader = $00 -> Go to NEXT TRACK
JSR NEXT_TRACK
+
BIT $C404 ; int again (6522)
LDA saveA
LDY saveY
LDX saveX
RTI
; =================================================================================================
PLAYER_PYM ; alt L/R AY version
!zone
LDA OUT2 ; switch l/r
EOR #$80
STA OUT2
TAX
INX
STX OUT1
.r0 ; REGISTER 0
LDY #00
LDA #$00
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG0 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG0
BNE .r1
LDY iREG0
LDA (dREG0),Y
STA nREG0
INY
LDA (dREG0),Y
STA vREG0
INY
STY iREG0
.r1 ; REGISTER 1
LDY #00
LDA #$01
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG1 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG1
BNE .r2
LDY iREG1
LDA (dREG1),Y
STA nREG1
INY
LDA (dREG1),Y
STA vREG1
INY
STY iREG1
.r2 ; REGISTER 2
LDY #00
LDA #$02
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG2 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG2
BNE .r3
LDY iREG2
LDA (dREG2),Y
STA nREG2
INY
LDA (dREG2),Y
STA vREG2
INY
STY iREG2
.r3 ; REGISTER 3
LDY #00
LDA #$03
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG3 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG3
BNE .r4
LDY iREG3
LDA (dREG3),Y
STA nREG3
INY
LDA (dREG3),Y
STA vREG3
INY
STY iREG3
.r4 ; REGISTER 4
LDY #00
LDA #04
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG4 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG4
BNE .r5
LDY iREG4
LDA (dREG4),Y
STA nREG4
INY
LDA (dREG4),Y
STA vREG4
INY
STY iREG4
.r5 ; REGISTER 5
LDY #00
LDA #$05
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG5 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG5
BNE .r6
LDY iREG5
LDA (dREG5),Y
STA nREG5
INY
LDA (dREG5),Y
STA vREG5
INY
STY iREG5
.r6 ; REGISTER 6
LDY #00
LDA #$06
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG5 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG6
BNE .r7
LDY iREG6
LDA (dREG6),Y
STA nREG6
INY
LDA (dREG6),Y
STA vREG6
INY
STY iREG6
.r7 ; REGISTER 7
LDY #00
LDA #$07
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG7 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG7
BNE .r8
LDY iREG7
LDA (dREG7),Y
STA nREG7
INY
LDA (dREG7),Y
STA vREG7
INY
STY iREG7
.r8 ; REGISTER 8
LDY #00
LDA #$08
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG8 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG8
BNE .r9
LDY iREG8
LDA (dREG8),Y
STA nREG8
INY
LDA (dREG8),Y
STA vREG8
INY
STY iREG8
.r9 ; REGISTER 9
LDY #00
LDA #$09
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREG9 ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREG9
BNE .ra
LDY iREG9
LDA (dREG9),Y
STA nREG9
INY
LDA (dREG9),Y
STA vREG9
INY
STY iREG9
.ra ; REGISTER 10
LDY #00
LDA #$0A
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREGA ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREGA
BNE .rb
LDY iREGA
LDA (dREGA),Y
STA nREGA
INY
LDA (dREGA),Y
STA vREGA
INY
STY iREGA
.rb ; REGISTER 11
LDY #00
LDA #$0B
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREGB ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREGB
BNE .rc
LDY iREGB
LDA (dREGB),Y
STA nREGB
INY
LDA (dREGB),Y
STA vREGB
INY
STY iREGB
.rc ; REGISTER 12
LDY #00
LDA #$0C
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
LDA vREGC ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
DEC nREGC
BNE .rd
LDY iREGC
LDA (dREGC),Y
STA nREGC
INY
LDA (dREGC),Y
STA vREGC
INY
STY iREGC
.rd ; REGISTER 13 ; skip if = $FF (warning 2 AY!)
LDA vREGD
TAY
BPL + ; if not $FF play it
LDA oldREGD ; if $FF check previous value
BMI .rdb ; if $FF too, skip
LDY #$FF ; else $FF is new oldREGD
+ STY oldREGD ; save oldREGD
TAX ; save vREGD
LDY #00
LDA #$0D
STA (OUT1),Y ; reg#
LDA #$07 ; Set fct "Set PSG Reg #"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
TXA ; reg value
STA (OUT1),Y ; ORA1 (data)
LDA #$06 ; Set fct "Write DATA"
STA (OUT2),Y ; ORB1 (fct)
LDA #$04 ; Set fct "Inactive"
STA (OUT2),Y ; ORB1 (fct)
.rdb DEC nREGD
BNE .checkpattern
LDY iREGD
LDA (dREGD),Y
STA nREGD
INY
LDA (dREGD),Y
STA vREGD
INY
STY iREGD
.checkpattern
DEC count1Pat ; end of ONE pattern ?
BEQ ++ ; if yes, next pattern!
.end INC Tick ; inc frame counter
BNE +
INC Tick+1
+ LDA Tick+1
LDX iTFrames
CMP THFrames,X
BNE .quit
LDA Tick
CMP TLFrames,X
BNE .quit
INC bMark ; = 1
INC iTFrames
.quit RTS
++ ; next pattern
LDA #PATTERNSIZE
STA count1Pat
INC indexPat
LDX indexPat
INIT_PATTERN
; init pattern
LDA D_REG0,X
STA dREG0
LDA D_REG0+NBPATTERNS,X
STA dREG0+1
LDY #00
LDA (dREG0),Y
STA nREG0
INY
LDA (dREG0),Y
STA vREG0
INY
STY iREG0
LDA D_REG1,X
STA dREG1
LDA D_REG1+NBPATTERNS,X
STA dREG1+1
LDY #00
LDA (dREG1),Y
STA nREG1
INY
LDA (dREG1),Y
STA vREG1
INY
STY iREG1
LDA D_REG2,X
STA dREG2
LDA D_REG2+NBPATTERNS,X
STA dREG2+1
LDY #00
LDA (dREG2),Y
STA nREG2
INY