Epson S1C6S3N2 Technical Manual page 211

INTI:
;
;
;
INTI8: LD
;
INTI2: LD
;
INRT:
Note
S1C6S3N2 TECHNICAL SOFTWARE
PUSH XH
PUSH XL
PUSH YH
PUSH YL
PUSH A
PUSH B
PUSH F
LD X,79H
LD Y,YTIB
LD MY,MX
LD X,78H
AND MY,MX
FAN MY,0001B ;
JP Z,INTI8
CALL TI32
Y,YTIB
FAN MY,0010B ;
JP Z,INTI2
CALL TI8
Y,YTIB
FAN MY,0100B ;
JP Z,INRT
CALL TI2
For details on "INRT", see the interrupt routine in "4.5
Example of Interrupt Vector Processing".
Regardless of the setting of the interrupt mask register (ETI),
the interrupt factor flag (TI) is set to "1" at the falling edge of
the corresponding signal. Hence, the presence of an inter-
rupt factor is judged by the result of ANDing the factor flag
stored in the buffer and the interrupt mask register.
EPSON
CHAPTER 5: PERIPHERAL CIRCUITS (Clock Timer)
; Store value of X register in stack
;
;
Store value of Y register in stack
;
;
Store value of A register in stack
; Store value of B register in stack
;
Store value of F register in stack
; (Reset) the timer interrupt factor flags
; and store in buffer
;
; Mask the timer interrupt factor flags
; by the value of the timer interrupt mask register
If the TM32Hz interrupt factor flag is set,
;
and enabled
; then "TI32" is executed
; If the TM8Hz interrupt factor flag is set,
and enabled
;
; then "TI8" is executed
; If the TM2Hz interrupt factor flag is set,
and enabled
;
; then "TI2" is executed
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