Palette upload with DMA

	REP #$20
	LDA #$001F : STA $074B

	LDY #$00 : STY $2121	; Set address for CGRAM Write to 00.
	LDA #$2200 : STA $4320	; One register write once, to 2122.
	LDA #$0703 : STA $4322	; Address of palette to upload.
	LDY.b #$7E : STY $4324	; Bank to grab palette from.
	LDA #$0200 : STA $4325	; Upload two bytes.
	LDX #$04 : STX $420B	; Start DMA.
	SEP #$20