6 files changed, 105 insertions(+), 18 deletions(-)

M .gitignore
M NOTES
A README.md
M src/cart.asm
M tools/asm6
M tools/lin6

@@ 1,1 1,3 @@
+tools/asm6
+tools/lin6
 cart.nes=
\ No newline at end of file

@@ 73,4 73,14 @@ function randomize_steps()
   for i=1,16 do
     step[i] = math.random(COMMANDS)
   end
-end>
\ No newline at end of file
+end
+
+thats it!
+Dans le header:
+change
+.db $20 ;Flags 6 (BNROM)
+pour
+.db $21 ;Flags 6 (BNROM)
+et recompile
+tu va avoir mon prob
+donc si t'es capable de changer les offsets ou tu write dans la nametable pour que ca donne le meme résultat avec $21 et $20 dans le flag 6 ca va marcher partout<
\ No newline at end of file

@@ 0,0 1,18 @@
+# spacetime 6502
+
+spacetime is a weird function sequencer.
+it plays a note on each step.
+each step is a symbol for the action.
+
+- `+` increase note
+- `-` decrease note
+- `<` go to bottom note
+- `>` go to top note
+- `*` random note
+- `M` fast metro
+- `m` slow metro
+- `#` jump random position
+
+## More info
+
+https://llllllll.co/t/spacetime-6502-port/35807<
\ No newline at end of file

@@ 1,13 1,16 @@
 
 ;; header
 
-	.db "NES", $1a ; identification of the iNES header
-	.db 1 ; number of 16KB PRG-ROM pages
-	.db $01 ; number of 8KB CHR-ROM pages
-	.db $00 ; NROM
-	.dsb $09,$00 ; clear the remaining bytes
-	.fillvalue $FF ; Sets all unused space in rom to value $FF
-	.org $C000
+	.db "NES",$1A
+	.db $02 ;Size of PRG ROM in 16 KB units
+	.db $00 ;Size of CHR ROM in 8 KB units (Value 0 means the board uses CHR RAM)
+	.db $20 ;Flags 6 (BNROM)
+	.db $20 ;Flags 7 (BNROM)
+	.db $00 ;Size of PRG RAM in 8 KB units (Value 0 infers 8 KB for compatibility)
+	.db $00 ;Flags 9
+	.db $00 ;Flags 10 (unofficial)
+	.db 0,0,0,0,0
+	.org $8000
 
 ;; constants
 


@@ 60,6 63,7 @@
 	rate                    .dsb 1
 	timer                   .dsb 1
 	seed                    .dsb 1
+	ptr_src                 .dsb 1
 	.ende 
 
 ;; reset


@@ 100,6 104,14 @@ Vblankwait2: ; Second wait for vblank
 
 ;; setup phase
 
+	JSR ClearVram
+	;load sprite base
+	LDA #$00
+	STA PPUADDR
+	LDA #$00
+	STA PPUADDR
+	JSR LoadSprites
+
 SetupPalettes: 
 	LDA PPUSTATUS
 	LDA #$3F


@@ 550,9 562,52 @@ Cleanup:
 	STA PPUSCROLL
 	RTI                                ; return from interrupt
 
-;; tables
+ClearVram: 
+	LDA #$00
+	STA PPUADDR
+	STA PPUADDR
+	TAY 
+	LDX #6
+
+ClearVramLoop: 
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	STA PPUDATA
+	DEY 
+	BNE ClearVramLoop
+	DEX 
+	BNE ClearVramLoop
+	RTS 
 
-	.org $E000
+;; Move sprites
+
+LoadSprites: 
+	LDA #Sprites&255
+	STA ptr_src
+	LDA #Sprites/256
+	STA ptr_src+1
+	LDY #0                             ; starting index into the first page
+	STY PPUMASK                        ; turn off rendering just in case
+	STY PPUADDR                        ; load the destination address into the PPU
+	STY PPUADDR
+	LDX #32                            ; number of 256-byte pages to copy
+
+Loop: 
+	LDA (ptr_src),y                    ; copy one byte
+	STA PPUDATA
+	INY 
+	BNE Loop                           ; repeat until we finish the page
+	INC ptr_src+1                      ; go to the next page
+	DEX 
+	BNE Loop                           ; repeat until we've copied enough pages
+	RTS 
+
+;; tables
 
 Palettes: ;
 	.db $0F,$3B,$16,$30, $3B,$3B,$0F,$0F, $0F,$3B,$0F,$0F, $0F,$3B,$0F,$0F


@@ 580,15 635,11 @@ NotesLo:
 	.db $7e,$77,$70,$6a,$64,$5e,$59,$54,$4f,$4b,$46,$42
 	.db $3f,$3b,$38,$34,$31,$2f,$2c,$29,$27,$25,$23,$21
 
-;; Vectors
-
-	.pad $FFFA
-	.dw NMI
-	.dw RESET
-	.dw 0
+;; sprites
 
-;; Sprites
+	.org $D000
 
+Sprites: 
 	.db $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
 	.db $fe,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00
 	.db $00,$00,$00,$00,$00,$00,$00,$00,$fe,$00,$00,$00,$00,$00,$00,$00


@@ 649,4 700,10 @@ NotesLo:
 	.db $7c,$82,$82,$fe,$82,$82,$82,$00,$7c,$82,$82,$fe,$82,$82,$82,$00
 	.db $74,$8a,$84,$fa,$82,$82,$82,$00,$74,$8a,$84,$fa,$82,$82,$82,$00
 	.db $fc,$82,$82,$fc,$82,$82,$fc,$00,$fc,$82,$82,$fc,$82,$82,$fc,$00
-	.dsw 3624,$0000
+
+;; Vectors
+
+	.pad $FFFA
+	.dw NMI
+	.dw RESET
+	.dw 0