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# puce6502
This is a simple and readable emulation of the MOS 6502 CPU\
It implements all original instructions and is cycle accurate
It also passes the [Klaus Test Suite](https://github.com/Klaus2m5/6502_65C02_functional_tests) - set \_FUNCTIONNAL_TESTS to 1 and compile it as a standalone program.
It implements all original instructions and is cycle accurate\
It also passes the [Klaus Test Suite](https://github.com/Klaus2m5/6502_65C02_functional_tests) : set `_FUNCTIONNAL_TESTS` to 1 and compile it as a standalone program.
API is as simple as :
@ -13,7 +13,7 @@ void puce6502IRQ();
void puce6502NMI();
```
the first function will execute as many instructions as needed to reach cycleCount clock cycles - it will return the updated value of the Program Counter
The first function will execute as many instructions as needed to reach cycleCount clock cycles - it will return the updated value of the Program Counter
the 3 others will simulate a RESET, INTERUPT and NON-MASKABLE INTERUPT.
You are expected to provide the functions to handle read and writes to memory (ROM, RAM, Soft Switches, extension cards ROMs, PIA, VIA, ACIA etc...)
@ -24,7 +24,7 @@ uint8_t readMem(uint16_t address);
void writeMem(uint16_t address, uint8_t value);
```
finnaly, you can import the variable `ticks` (extern ticks) into your code - it holds the accumulated clock cycles since start.
Finnaly, you can import the variable `ticks` (extern ticks) into your code - it holds the accumulated clock cycles since start.
For an example of use, you can refer to [reinette II plus](https://github.com/ArthurFerreira2/reinette-II-plus) a french Apple II plus emulator.