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TKSA

     Purpose:  Send a secondary address to a device commanded to TALK
Call address:  $FF96 (hex)  65430 (decimal)
Communication registers:  A
Preparatory routines:  TALK
Error returns:  See READST
Stack requirements:  8
Registers affected:  A

Description:

This routine transmits a secondary address on the serial bus for a TALK device. This routine must be called with a number between 0 and 31 in the accumulator. The routine sends this number as a secondary address command over the serial bus. This routine can only be called after a call to the TALK routine. It will not work after a LISTEN.

How to Use:

  1. Use the TALK routine.
  2. Load the accumulator with the secondary address.
  3. Call this routine.

EXAMPLE:

     ;TELL DEVICE #4 TO TALK WITH COMMAND #7
     LDA #4
     JSR TALK
     LDA #7
     JSR TKSA
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