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Skip condition
–
–
Branch within a page : Branches to address a in the identical page.
–
–
Branch out of a page : Branches to address a in page p.
–
–
Branch out of a page : Branches to address (DR
page p.
–
–
Call the subroutine in page 2 : Calls the subroutine at address a in page 2.
–
–
Call the subroutine : Calls the subroutine at address a in page p.
–
–
Call the subroutine : Calls the subroutine at address (DR
and A in page p.
–
–
Returns from interrupt service routine to main routine.
Returns each value of data pointer (X, Y, Z), carry flag, skip status, NOP mode status by the continuous de-
scription of the LA/LXY instruction, register A and register B to the states just before interrupt.
–
–
Returns from subroutine to the routine called the subroutine.
Skip at uncondition
–
Returns from subroutine to the routine called the subroutine, and skips the next instruction at uncondition.
–
–
Clears (0) to the interrupt enable flag INTE, and disables the interrupt.
–
–
Sets (1) to the interrupt enable flag INTE, and enables the interrupt.
(EXF0) = 1
–
Skips the next instruction when the contents of EXF0 flag is "1."
After skipping, clears (0) to the EXF0 flag.
–
(EXF1) = 1
Skips the next instruction when the contents of EXF1 flag is "1."
After skipping, clears (0) to the EXF1 flag.
Datailed description
DR
2
4513/4514 Group User's Manual
HARDWARE
MACHINE INSTRUCTIONS
DR
A
A
A
A
)
specified by registers D and A in
1
0
3
2
1
0
2
DR
DR
A
A
A
A
)
2
1
0
3
2
1
0
2
specified by registers D
1-75
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