Function Name: 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 TALKSA