Jp %y, Jr %a – Epson S1C63000 User Manual
Page 101
S1C63000 CORE CPU MANUAL
EPSON
95
CHAPTER 4: INSTRUCTION SET
JP %Y
Indirect jump using Y reg.
1 cycle
Function:
PC
←
Y
Loads the content of the Y register into the PC to branch unconditionally.
Code:
Mnemonic
MSB
LSB
JP %Y
1
1
1
1
1
1
1
1
1
0
0
1
X
1FF2H, (1FF3H)
Flags:
E
I
C
Z
↓
–
–
–
Mode:
Register direct
Extended addressing: Invalid
JR %A
Jump to relative location A reg.
1 cycle
Function:
PC
←
PC + A + 1
Adds the content of the A register to the address next to this instruction, to unconditionally
branch to that address. Branch destination range is the next address of this instruction +0 to 15.
Code:
Mnemonic
MSB
LSB
JR %A
1
1
1
1
1
1
1
1
1
0
0
0
1
1FF1H
Flags:
E
I
C
Z
↓
–
–
–
Mode:
Register direct
Extended addressing: Invalid