Sharp LR35902 CPU - Miliox/goteborg GitHub Wiki
Sharp LR35902 CPU
Summary
| Features |
Details |
| Manufacturer |
Sharp |
| Year |
1989 |
| Bits |
8-bit |
| Address Space |
16-bit |
| 8-bit Registers |
8 |
| 16-bit Registers |
16 |
| Frequency |
4.19MHz |
| Instruction Type |
# |
| Bit Shift/Check |
258 |
| 8-bit Load/Move |
92 |
| 8-bit Arithmetic/Logic |
88 |
| Jump/Call |
29 |
| 16-bit Load/Move |
15 |
| 16-bit Arithmetic/Logic |
13 |
| Control/Miscellaneous |
6 |
| UNDEFINED |
11 |
| Total Instruction Set |
512 |
| Registers |
Purpose |
Size |
| A |
Accumulator |
8-bit |
| F |
Flags |
8-bit |
| AF |
CPU State |
16-bit |
| B |
General |
8-bit |
| C |
General |
8-bit |
| BC |
General |
8-bit |
| D |
General |
8-bit |
| E |
General |
8-bit |
| DE |
General |
16-bit |
| H |
General |
8-bit |
| L |
General |
8-bit |
| HL |
Address Pointer |
16-bit |
| SP |
Stack Pointer |
16-bit |
| PC |
Program Counter |
16-bit |
| IE |
Interrupt Enable |
1-bit |
| Flags |
Mnemonic |
Description |
| Z |
Zero |
Comparison Check. |
| N |
Negative |
Subtraction Flag. |
| C |
Carry |
Byte Overflow/Underflow. |
| H |
Half-Carry |
Lower Nibble Overflow/Underflow. |
References
Gameboy CPU (LR35902) instruction set table
Duo Gameboy Dev
The Nintendo® Game Boy™, Part 1: The Intel 8080 and the Zilog Z80.