Epson S1C63000 - Manual (Page 107)

S1C63000 CORE CPU MANUAL EPSON 101
CHAPTER 4: INSTRUCTION SET
LD %r,[%ir]+ Load location [ir reg.] into r reg. and increment ir reg. 1 cycle
Function: r
←
[ir], ir
←
ir + 1
Loads the content of the data memory addressed by the ir register (X or Y) into the r register (A
or B). Then increments the ir register (X or Y).
Code: Mnemonic MSB LSB
LD %A,[%X]+ 1 1 1 1 0 1 1 1 0 0 0 0 1 1EE1H
LD %A,[%Y]+ 1 1 1 1 0 1 1 1 0 0 0 1 1 1EE3H
LD %B,[%X]+ 1 1 1 1 0 1 1 1 0 0 1 0 1 1EE5H
LD %B,[%Y]+ 1 1 1 1 0 1 1 1 0 0 1 1 1 1EE7H
Flags: E I C Z
↓
– – –
Mode: Src: Register indirect
Dst: Register direct
Extended addressing: Invalid
LD [%ir],%r Load r reg. into location [ir reg.] 1 cycle
Function: [ir]
←
r
Loads the content of the r register (A or B) into the data memory addressed by the ir register (X
or Y).
Code: Mnemonic MSB LSB
LD [%X],%A 1 1 1 1 0 1 1 1 0 1 0 0 0 1EE8H
LD [%X],%B 1 1 1 1 0 1 1 1 0 1 1 0 0 1EECH
LD [%Y],%A 1 1 1 1 0 1 1 1 0 1 0 1 0 1EEAH
LD [%Y],%B 1 1 1 1 0 1 1 1 0 1 1 1 0 1EEEH
Flags: E I C Z
↓
– – –
Mode: Src: Register direct
Dst: Register indirect
Extended addressing: Valid
Extended LDB %EXT,imm8
operation: LD [%X],%r [00imm8]
←
r (00imm8 = 0000H + 00H to FFH)
LDB %EXT,imm8
LD [%Y],%r [FFimm8]
←
r (FFimm8 = FF00H + 00H to FFH)