Texas Instruments 990 User Manual page 107

Applications Programming
*
***
ACTIVATION SERVICES OPTION CODES TABLE BELOW
***
*
UNSUSP BYTE 4
REQUEST UNSUSPENSION
TIMEDY BYTE 5
REQUEST ACT. FROM TIME DELAY
BIDME BYTE 6 REQUEST TO BE BID
REMOVE BYTE 7
REMOVE MY ID FROM ACT. SVCS LIST
*
***
TX5 SVC CALL BLOCKS FOR SUSPEND STATE ASSUMED ***
*
SUSPND DATA >0600
REQUEST TO BE SUSPENDED
*
OUTBUF TEXT
~THIS RESPONSE MESSAGE IS SENT TO THE PRlMARY~
OUTLEN EQU
$-OUTBUF
*
INBUF BSS 256
INPUT MESSAGE BUFFER
INLEN
EQU 256 TX MAX BUFFER LENGTH ALLOWED
*
*
THIS SAMPLE PROGRAM USES THE >4D SVCs WITHOUT
*
TESTING FOR ERROR RE.TURNS. THE USER IS REMINDED
*
THAT ERROR TESTING SHOULD ALWAYS BE DONE TO ENSURE THAT
*
THE CALL WAS SUCCESSFULLY MADE.
*
PC
*
MOVB @UNSUSP,@ASCODE
SVC @ACTSVC
SVC @SUSPND
REQUEST UNSUSPENSION FROM ACT SVCS
*
SYSTEM SUSPEND REQUEST.
**
AM UNSUSPENDED HERE. DO READ CALL WHEN ACTIVE.
*
*
*
*
*
*
SVC
MOV
SVC
@READ
@RDID,@WDID
@WRITE
JMP PC
END
READ MESG.
SET ADDRESS FOR RESPONSE
SEND RESPONSE MESSAGE
TO
SENDER
PROCESS INPUT DATA HERE,
*
START OVER. REQ UNSUSPEND
IF ANY SECONDARY TASK SENDS
A MESSAGE.
Figure 4-6 Secondary Station Assembly Language Program (Sheet 2 of 2)
2270526-9701 4-21