9. Instructions
9.1 Symbol Description
SD6830
SYMBOL
DESCRIPTIONS
A,B,L
4 Bit Register
H
1-Bit Register
Z
3-Bit Register
PCH
The Higher 4-Bit of the Program Counter
PCL
The Lower 6-Bit of the Program Counter
PC
10-Bit Program Counter ( Consisting of the PCH and PCL )
SK
10-Bit Stack Register
CY
1-Bit Carry Flag
SF
1-Bit Skip Flag
C, G, K
1-Bit Port
D, E
4-Bit Port
F
8-Bit Port
←
Direction of Data Flow
M[(HL)] or @HL
The Contents of Data Memory Addressed by Reg HL
M[(HL)].b or @HL.b The Specified Bit’s Content of Data Memory Addressed by Reg HL
@HL+
As a result of execution, increment L by one
addr
Address
n
immediate data
KSI-W002-000
18