Main Index Routine Index Memory Index Previous Page Next Page $1800: Data Port B (ATN, CLOCK, DATA, Device #) +----------+---------------------------------------------------+ | Bit 7 | ATN IN | | Bits 6-5 | Device address preset switches: | | | 00 = #8, 01 = #9, 10 = #10, 11 = #11 | | Bit 4 | ATN acknowledge OUT | | Bit 3 | CLOCK OUT | | Bit 2 | CLOCK IN | | Bit 1 | DATA OUT | | Bit 0 | DATA IN | +----------+---------------------------------------------------+ --- Information taken from AAY1541 - http://www.the-dreams.de ---- RapidLok-Reference: STY $1800 : $07CB STA $1800 : $0379 STA $1800 : $05EB STA $1800 : $05F9 STA $1800 : $0637 LDX $1800 : $063B CPX $1800 : $063E CPX $1800 : $0645 STA $1800 : $064A STA $1800 : $0650 STA $1800 : $0654 STA $1800 : $065A STA $1800 : $0661 STX $1800 : $0798 Previous Page / Next Page