HD404318 Datasheet, PDF (17/68 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

HD404318 Series
Table 2 Instruction Set Classification
Instruction Type
Function
Number of
Instructions
Immediate
Transferring constants to the accumulator, B register, and RAM.
4
Register-to-register Transferring contents of the B, Y, SPX, SPY, or memory registers to 8
the accumulator
RAM addressing
Available when accessing RAM in register indirect addressing mode 13
RAM register
Transferring data between the accumulator and memory.
10
Arithmetic
Performing arithmetic operations with the contents of the accumulator, 25
B register, or memory.
Compare
Comparing contents of the accumulator or memory with a constant 12
RAM bit manipulation Bit set, bit reset, and bit test.
6
ROM addressing
Branching and jump instructions based on the status condition.
8
Input/output
Controlling the input/output of the R and D ports; ROM data reference 11
with the P instruction
Control
Controlling the serial communication interface and low-power
4
dissipation modes.
Total: 101
instructions
15