Offset: $1FC Access: write Chipset: AGA
Selects AGA DMA fetch widths and scan doubling.
Bitfields¶
Bits 1-0: Bitplane fetch width; 0 = 16 bits, 1 or 2 = 32 bits, 3 = 64 bits.
Bits 3-2: Sprite fetch width, using the same encoding.
Bit 14: BSCAN2, bitplane scan doubling.
Bit 15: SSCAN2, sprite scan doubling.
Bits 13-4: Ignored.