CHAPTER 8 8-BIT SERIAL I/O
;-----Interrupt processing routine-----------------------------------------------------------------------------------------------------------------------
WARI
CLRB
PUSHW
XCHW
PUSHW
MOV
SETB
:
User processing
:
POPW
XCHW
POPW
RETI
ENDS
;----------------------------------------------------------------------------------------------------------------------------------------------------------------
END
218
SIOF
; Clear interrupt request flag.
A
A,T
A
A,SDR
; Read transfer data.
SST
; Enable serial I/O transfer.
A
A,T
A