S1C63000 CORE CPU MANUAL EPSON 121
CHAPTER 4: INSTRUCTION SET
RL [%ir] Rotate left location [ir reg.] with carry 2 cycles
Function:
Rotates the content of the data memory addressed by the ir register (X or Y) including the carry
(C) to the left for 1 bit. The content of the C flag moves to bit 0 of the data memory and bit 3
moves to the C flag.
Code:
Mnemonic MSB LSB
RL [%X] 100001110100010E8H
RL [%Y] 100001110101010EAH
Flags: EICZ
↓ – ↕↕
Mode: Register indirect
Extended addressing: Valid
Extended LDB %EXT,imm8
operation: RL [%X] Rotates the content of [00imm8] (00imm8 = 0000H + 00H to FFH)
LDB %EXT,imm8
RL [%Y] Rotates the content of [FFimm8] (FFimm8 = FF00H + 00H to FFH)
RL [%ir]+ Rotate left location [ir reg.] with carry and increment ir reg. 2 cycles
Function: , ir ← ir +1
Rotates the content of the data memory addressed by the ir register (X or Y) including the carry
(C) to the left for 1 bit. The content of the C flag moves to bit 0 of the data memory and bit 3
moves to the C flag. Then increments the ir register (X or Y). The increment result of the ir
register does not affect the flags.
Code:
Mnemonic MSB LSB
RL [%X]+ 100001110100110E9H
RL [%Y]+ 100001110101110EBH
Flags: EICZ
↓ – ↕↕
Mode: Register indirect
Extended addressing: Invalid
C 3210 [ir]
C 3210 [ir]
