Fujitsu FR60 Hardware Manual page 87

[Example]
LDI:32
JMP:D
LDI:8
...
2) RP referred by the RET:D instruction is not affected even though RP is updated by the instruction in the
delay slot.
[Example]
RET:D
MOV
3) The flag referred by the Bcc:D rel instruction is not affected by the instruction in the delay slot.
[Example]
ADD #1,
BC:D Overflow
ANDCCR #0
...
4) If RP is referred by an instruction in the delay slot of the CALL:D instruction, the data that has been
updated by the CALL:D instruction is read.
[Example]
CALL:D
MOV
...
■ Limitations on Operation with Delay Slot
●
Instructions that can be placed in the delay slot
Only an instruction meeting the following conditions can be executed in the delay slot.
• One-cycle instruction
• Instruction other than a branch instruction
• Instruction whose operation is not affected even though the order is changed
A one-cycle instruction is an instruction denoted in the Number of Cycles column in the list of
instructions as 1, a, b, c, and d.
#Label, R0
@R0
#0, R0
;
R8, RP ;
...
R0 ; Flag change
; Branch to execution result of above instruction
; This flag update is not referred by the above branch instruction.
Label
RP, R0
; Branch to Label
; No effect on the branch destination address
Branch to address defined beforehand in RP
No effect on the return operation
; Updating RP and branching
; Transferring RP, execution result of above CALL:D
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