Labels:text | diagram | black and white | parallel | plan | technical drawing | schematic OCR: 105 ACIA / VIC 20 / Commodore 64 / B / +4 RS 232 Control Features not common to all machines are so noted. OPENLF,2,SA,CHR$(76543210)+CHR$(76543210) Control Register Command Register B Series: + CHR$(0) + CHR$(0) not used but necessary SA B Series: Baud B Series 1 Open Output Channel 0 0 0 0 User" XXXX Not Used Open Input Channel 0 0 0 1 50 VIC/64 ACIA/+4 129 Open Input/Output Channel Output Channel, Convert CBM to ASCII 0 1 75 Handshake Data Terminal Ready 130 Input Channel, Convert ASCII to CBM 0 1 1 110 0 3 Line | Disable Rcv/Xmit (DTR high) 131 Input/Output, Convert ASCII == CBM 1 0 0 134.5 1 X Line Enable Rcv/Xmit (DTR low) 0 1 0 1 150 ACIA / VIC 20 / C64 / B / +4 1 1 0 300 VIC/64 RS 232 Status 0 1 1 1 600 XXX Not Used 7 6 5 4 3 2 1 0 ST. Status Variable = Status Register 1 0 0 1200 1 ...
