Ldb %ext,imm8, Ldb %ext,%ba – Epson S1C63000 User Manual
Page 115
S1C63000 CORE CPU MANUAL
EPSON
109
CHAPTER 4: INSTRUCTION SET
LDB %EXT,imm8
Load immediate data imm8 into EXT reg.
1 cycle
Function:
EXT
←
imm8
Loads the 8-bit immediate data into the EXT register. The E flag is set to "1".
Code:
Mnemonic
MSB
LSB
LDB %EXT,imm8
0
1
0
0
0 i7 i6 i5 i4 i3 i2 i1 i0
0800H–08FFH
Flags:
E
I
C
Z
↑
–
–
–
Mode:
Src: Immediate data
Dst: Register direct
Extended addressing: Invalid
LDB %EXT,%BA
Load BA reg. into EXT reg.
1 cycle
Function:
EXT
←
BA
Loads the content of the BA register into the EXT register. The E flag is set to "1".
Code:
Mnemonic
MSB
LSB
LDB %EXT,%BA
1
1
1
1
1
1
1
0
1
0
1
0
X
1FD4H, (1FD5H)
Flags:
E
I
C
Z
↑
–
–
–
Mode:
Src: Register direct
Dst: Register direct
Extended addressing: Invalid