Offset: $042 Access: write Chipset: OCS/ECS/AGA
Selects area or line mode, source B shift, fill, and direction.
Bitfields¶
Bits 15-12: BSH, source B shift or line-texture position.
Bit 7: DOFF, suppress destination writes (ECS/AGA).
Bit 6: SIGN, line error-term sign.
Bits 4-2: EFE/IFE/FCI in area mode; SUD/SUL/AUL direction controls in line mode.
Bit 1: DESC in area mode; SING in line mode.
Bit 0: LINE, select line mode.
Bits 11-8 and bit 5 are unused. Fill applies to descending area blits.