3 . I n s t r u c t i o n S e t
3 - 5 3
CJ Instruction Program Flow
X1
CALL
P63
P0
P63
CJ
P0
I301
X0
0
The program flow
when X0=off,
X1=off
Main program
Main program
Main program
Interrupt subroutine
Command CALL subroutine
EI
DI
FEND
FEND
SRET
IRET
END
The program flow when X0=On
program jumps to P0
