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66 EPSON S1C63000 CORE CPU MANUAL
CHAPTER 4: INSTRUCTION SET
ADC %B,[%ir]+,n4
ADC [%ir],%B,n4 Add with carry B reg. to location [ir reg.] in specified radix 2 cycles
Function: [ir] ← N's adjust ([ir] + B + C)
Adds the content of the B register and carry (C) to the data memory addressed by the ir
register (X or Y). The operation result is adjusted with n4 as the radix. The C flag is set by a
carry according to the radix.
Code:
Mnemonic MSB LSB
ADC [%X],%B,n4 111010100 [10H-n4] 1D40H–1D4FH
ADC [%Y],%B,n4 111010110 [10H-n4] 1D60H–1D6FH
Flags: EICZ
↓ – ↕↕
Mode: Src: Register direct
Dst: Register indirect
Extended addressing: Valid
Extended LDB %EXT,imm8
operation: ADC [%X],%B,n4 [00imm8] ← N’s adjust ([00imm8] + B + C)
(00imm8 = 0000H + 00H to FFH)
LDB %EXT,imm8
ADC [%Y],%B,n4 [FFimm8] ← N’s adjust ([FFimm8] + B + C)
(FFimm8 = FF00H + 00H to FFH)
Note: n4 should be specified with a value from 1 to 16.
Add with carry location [ir reg.] to B reg. in specified radix and increment ir reg. 2 cycles
Function: B ← N's adjust (B + [ir] + C), ir ← ir + 1
Adds the content of the data memory addressed by the ir register (X or Y) and carry (C) to the
B register. The operation result is adjusted with n4 as the radix. Then increments the ir register
(X or Y). The flags change due to the operation result of the B register and the increment result
of the ir register does not affect the flags. The C flag is set by a carry according to the radix.
Code:
Mnemonic MSB LSB
ADC %B,[%X]+,n4 111011101 [10H-n4] 1DD0H–1DDFH
ADC %B,[%Y]+,n4 111011111 [10H-n4] 1DF0H–1DFFH
Flags: EICZ
↓ – ↕↕
Mode: Src: Register indirect
Dst: Register direct
Extended addressing: Invalid
Note: n4 should be specified with a value from 1 to 16.