Optimized scroll Y write.

Fixed VRAM mirroring of top name tables.
Fixed read buffer when reading from palette.
Fixed sprite dma.
Moved a few things from the cpu to the ppu.
Cleaned up comments in render.s

arm9/source/6502.s

@@ -44,7 +44,6 @@
 	.global __prgsize16k
 	.global all_pix_start
 	.global all_pix_end
-	.global ntsc_pal_reset
 	.global debugwrite
 	.global debugwrite_c
 	.global nsfHeader
@@ -1039,9 +1038,6 @@ line0:
 	bl ppusync
 
 	ldr_ r0,cyclesPerScanline
-	ldr_ r1,frame
-	tst r1,#1
-	subeq r0,r0,#CYCLE			@Every other frame has 1/3 less CPU cycle.
 	add cycles,cycles,r0
 	adr r0,line1_to_119
 	str_ r0,nexttimeout
@@ -1323,34 +1319,11 @@ VecCont:
 fiveminutes:	.word 5*60*60
 sleeptime: 		.word 5*60*60
 dontstop: 		.word 0
-PAL60: 			.byte 0
-				.align
-@---------------------------------------------------------------------------------
-ntsc_pal_reset:
-@---------------------------------------------------------------------------------
-@---NTSC/PAL
-	mov r2, globalptr
-	ldr globalptr,=globals
-
-	ldr_ r0,emuFlags
-	tst r0,#PALTIMING
-
-	ldreq r1,=341*CYCLE		@NTSC		(113+2/3)*3
-	ldrne r1,=320*CYCLE		@PAL		(106+9/16)*3
-	str_ r1,cyclesPerScanline
-	ldreq r1,=261			@NTSC
-	ldrne r1,=311			@PAL
-	str_ r1,lastScanline
-	mov globalptr, r2
-
-	bx lr
 @---------------------------------------------------------------------------------
 CPU_reset:	@called by loadcart (r0-r9 are free to use)
 @---------------------------------------------------------------------------------
 	str lr,[sp,#-4]!
 
-@---NTSC/PAL
-	bl ntsc_pal_reset
 @---cpu reset
 	mov m6502_a,#0
 	mov m6502_x,#0
@@ -1361,8 +1334,6 @@ CPU_reset:	@called by loadcart (r0-r9 are free to use)
 	str_ r0,m6502_s		@S=0xFD (0x100-3)
 	mov cycles,#0		@D=0, C=0, V=0, I=1 disable IRQ.
 
-	str_ m6502_a,frame		@frame count reset
-
 	@(clear irq/nmi/res source)...
 
 	ldr r12,=RES_VECTOR

arm9/source/io.s

@@ -66,7 +66,7 @@ io_write_tbl:
 	.word soundwrite	@pAPU Delta Modulation D/A Register 0x4011
 	.word soundwrite	@pAPU Delta Modulation Address Register 0x4012
 	.word soundwrite	@pAPU Delta Modulation Data Length Register 0x4013
-	.word dma_W		@$4014: Sprite DMA transfer
+	.word _4014W		@$4014: Sprite DMA transfer
 	.word soundwrite
 joypad_write_ptr:
 	.word joy0_W	@$4016: Joypad 0 write
@@ -78,34 +78,28 @@ FDS_W:
 	cmp r2, #0x90
 	bcs empty_W
 	b soundwrite
-@---------------------------------------------------------------------------------
-dma_W:	@(4014)		sprite DMA transfer
-@shell we edit?
-@---------------------------------------------------------------------------------
-PRIORITY = 0x000	@0x800=AGB OBJ priority 2/3
-
-	ldr r1,=3*513*CYCLE		@ was 512...	513/514 is the right number...
+;@----------------------------------------------------------------------------
+_4014W:						;@ Transfer 256 bytes from written page to $2004
+;@----------------------------------------------------------------------------
+	ldr r1,=513*3*CYCLE		@ 513/514 is the right number...
 	sub cycles,cycles,r1
-	stmfd sp!,{r3-r8,lr}
+	stmfd sp!,{r3-r4,lr}
 
 	and r1,r0,#0xe0
-	adr_ addy,m6502MemTbl
-	ldr addy,[addy,r1,lsr#3]
+	adr_ r2,m6502MemTbl
+	ldr r2,[r2,r1,lsr#3]
 	and r0,r0,#0xff
-	add addy,addy,r0,lsl#8	@addy=DMA source
-
-	mov r0, addy
-	ldr r1, =NES_SPRAM
-	mov r7, #240/5/4
-cpsp:
-	ldmia r0!, {r2-r6}
-	stmia r1!, {r2-r6}
-	subs r7, r7, #1
-	bne cpsp
-	ldmia r0!, {r2-r5}
-	stmia r1!, {r2-r5}
-
-	ldmfd sp!,{r3-r8,pc}
+	add r3,r2,r0,lsl#8	@ r3=DMA source
+	mov r4,#0x100
+dmaLoop:
+	ldrb r0,[r3],#1
+	bl ppuOamDataW
+	subs r4,r4,#1
+	bne dmaLoop
+
+	ldmfd sp!,{r3-r4,lr}
+	bx lr
+
 @---------------------------------------------------------------------------------
 refreshNESjoypads:	@call every frame
 @used to refresh joypad button status