Examples Of Interrupt And Halt Control Program - Epson E0C6001 Technical Manual

E0C6001 TECHNICAL SOFTWARE
Examples of interrupt
and halt control
program
II-48
• Restart from halt state by interrupt
Main routine
Label Mnemonic/operand
LD X,0E8H
OR MX,1111B
;
LD X,0EBH
OR MX,0111B
MAIN: EI
HALT
JP MAIN
Interruption vector routine
Label Mnemonic/operand
ORG 100H
JP INIT
JP INTR
JP INTR
JP INTR
JP INTR
JP INTR
;
INTR: LD X,0EFH
LD Y,TMFSK
LD MY,MX
FAN MY,0100B ;
JP Z,TI8RQ
CALL TINT2
TI8RQ:
LD Y,TMFSK
FAN MY,0010B ;
JP Z,TI32RQ ;
CALL TINT8
Comment
; Set address of K00 to K03
; interrupt mask register
;
Enable K00 to K03
;
input interrupt
;
Set address of timer interrupt
; mask register
; Enable timer interrupt
; (32 Hz, 8 Hz, 2 Hz)
; Set interrupt flag (EI state is set)
; Halt mode
; Jump to MAIN
Comment
;
Timer interrupt is generated
; K00 to K03 interrupt is generated
; Timer interrupt, K00 to K03 interrupt
;are generated
; Address of timer interrupt factor flag
; Address of timer interrupt factor flag buffer
Check 2 Hz timer interrupt
; Jump if not 2 Hz timer interrupt
; Call 2 Hz timer interrupt service routine
; Address of timer factor flag buffer
Check 8 Hz timer interrupt
Jump if not 8 Hz timer interrupt
;
Call 8 Hz timer interrupt service routine