INT 14 - I1541 - SEND SECONDARY ADDRESS FOR LISTEN AX = 4005h BL = channel number and mode (see #00355) Return: CF clear if successful CF set on error AL = error number (see #00354) SeeAlso: AX=4004h,AX=4006h Bitfields for I1541 channel number and mode: Bit(s) Description (Table 00355) 7-4 mode 0110 read/write 1110 close channel 1111 open channel 3-0 channel number