gc80c520g CORERIVER Semiconductor, gc80c520g Datasheet - Page 88

• Manufacturer Part Number: gc80c520g
• Description: Eprom / Rom / Romless Based 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

NOP
DJNZ
Decrement and Jump if Not Zero
No Operation
Appendix A : instruction set (18/18)
DJNZ
Operation :
DJNZ
Operation :
Operation :
<byte>, rel
Rn, rel
direct, rel
(PC)
(Rn)
If (Rn)≠0, then (PC)
(PC)
(direct)
If (direct)≠0,
(PC)
then (PC)
(PC) + 2
(Rn) - 1
(direct) - 1
(PC) + 3
(PC) + 1
(PC) + rel
(PC) + rel
1 1 0 1 1 r
1 1 0 1 0 1
0 0 0 0 0 0
Encoding :
Encoding :
Encoding :
r
0
0
HEX: D8h, #bytes: 2, Cycles: 3
HEX: D5h, #bytes: 3, Cycles: 4
HEX: 00h, #bytes: 1, Cycles: 1
r
0
1
relative addr
direct addr
MiDAS1.0 Family
relative addr
[88]