Filter
Top Products
S1C63000 CORE CPU MANUAL EPSON 125
CHAPTER 4: INSTRUCTION SET
SBC %r,[%ir]+
Subtract with carry location [ir reg.] from r reg. and increment ir reg. 1 cycle
Function: r ← r - [ir] - C, ir ← ir + 1
Subtracts the content of the data memory addressed by the ir register (X or Y) and carry (C)
from the r register (A or B). Then increments the ir register (X or Y). The flags change due to the
operation result of the r register and the increment result of the ir register does not affect the
flags.
Code:
Mnemonic MSB LSB
SBC %A,[%X]+ 110001110000118E1H
SBC %A,[%Y]+ 110001110001118E3H
SBC %B,[%X]+ 110001110010118E5H
SBC %B,[%Y]+ 110001110011118E7H
Flags: EICZ
↓ – ↕↕
Mode: Src: Register indirect
Dst: Register direct
Extended addressing: Invalid
SBC [%ir],%r Subtract with carry r reg. from location [ir reg.] 2 cycles
Function: [ir] ← [ir] - r - C
Subtracts the content of the r register (A or B) and carry (C) from the data memory addressed
by the ir register (X or Y).
Code:
Mnemonic MSB LSB
SBC [%X],%A 110001110100018E8H
SBC [%X],%B 110001110110018ECH
SBC [%Y],%A 110001110101018EAH
SBC [%Y],%B 110001110111018EEH
Flags: EICZ
↓ – ↕↕
Mode: Src: Register direct
Dst: Register indirect
Extended addressing: Valid
Extended LDB %EXT,imm8
operation: SBC [%X],%r [00imm8] ← [00imm8] - r - C (00imm8 = 0000H + 00H to FFH)
LDB %EXT,imm8
SBC [%Y],%r [FFimm8] ← [FFimm8] - r - C (FFimm8 = FF00H + 00H to FFH)