Main Index Routine Index Memory Index Previous Page Next Page $1C0C: Peripheral Control Register +----------+-----------------------------------------------------+ | Bits 7-5 | CB2 Control: | | | 000 = Input negative active edge | | | 001 = Independent interrupt input negative edge | | | 010 = Input positive active edge | | | 011 = Independent interrupt input positive edge | | | 100 = Handshake output | | | 101 = Pulse output | | | 110 = Low output | | | 111 = High output | | Bit 4 | CB1 Interrupt Control: 0 = Negative active edge | | | 1 = Positive active edge | | Bit 3-1 | CA2 Control: see Bits 7-5 | | Bit 0 | CA1 Interrupt Control: see Bit 4 | +----------+-----------------------------------------------------+ CA1 (Input): BYTE-READY CA2 (Output): SOE (High = activate BYTE-READY) CB2 (Output): Head Mode (Low = Write, High = Read) --- Information taken from AAY1541 - http://www.the-dreams.de ---- RapidLok-Reference: STA $1C0C : $0778 Previous Page / Next Page