Filter
Top Products
106 EPSON S1C63000 CORE CPU MANUAL
CHAPTER 4: INSTRUCTION SET
LDB %BA,[%ir]+ Load location [ir reg.] into BA reg. and increment ir reg. 2 cycles
Function: A ← [ir], B ← [ir + 1], ir ← ir + 2
Loads the 2-word data in the data memory into the BA register. The content of the data
memory addressed by the ir register (X or Y) is loaded into the A register as the low-order 4
bits, and the content of the next address is loaded into the B register as the high-order 4 bits.
The ir register (X or Y) is incremented by 2 words.
Code:
Mnemonic MSB LSB
LDB %BA,[%X]+ 11111110110001FD8H
LDB %BA,[%Y]+ 11111110110101FDAH
Flags: EICZ
↓ –––
Mode: Src: Register indirect
Dst: Register direct
Extended addressing: Invalid
LDB %BA,%EXT Load EXT reg. into BA reg. 1 cycle
Function: BA ← EXT
Loads the content of the EXT register into the BA register.
Code: Mnemonic MSB LSB
LDB %BA,%EXT 111111101011X1FD6H, (1FD7H)
Flags: EICZ
↓ –––
Mode: Src: Register direct
Dst: Register direct
Extended addressing: Invalid