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MOV
MOV
MOV
OR
LOOP:
MOV
MOV
BRA
;-------Interrupt program-------------------------------------------------------------------------------------------
WARI:
MOV
CLRB
;
:
;
User processing
;
:
RETI
CODE
ENDS
;-------Vector setting------------------------------------------------------------------------------------------------
VECT
CSEG
ORG
DSL
ORG
DSL
DB
VECT
ENDS
I:SSR1,#00000010B
I:SODR1,#13H
;Writes transmission data
ILM,#07H
CCR,#40H
A,#00H
A,#01H
LOOP
A,SIDR1
I:REC
ABS=0FFH
0FF68H
WARI
0FFDCH
;Sets reset vector
START
00H
;Enables transmission and reception operations
;Disables transmission interrupts and enables reception
; interrupts
;Sets ILM in PS to level 7
;Enables interrupts
;Endless loop
;Reads receive data
;Clears reception interrupt request flag
;Returns from the interrupt
;Sets vector for interrupt #37 (25H)
;Sets single-chip mode
CHAPTER 17 UART
511
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