This isn’t a full implementation of the 6502, this is more just a from scratch into in learning how a CPU works by writing an emulator one (in this case the 8-bit 6502).
If you want a more in depth video on writing a full 6502 emulator then see One Lone Coder’s “NES Emulator Part #2“:
Another good talk to watch is this video from Matt Godbolt about the BBC Emulator he wrote in Javascript!!!:
Code is here:
Links:
6502 Processor:
C64 Memory Map:
C64 Reset Process: (Process)
Timestamps:
0:00 - Intro
0:29 - The 6502
4:24 - Creating CPU Internals
9:23 - Resetting the CPU
12:48 - Creating the Memory
15:10 - Creating the Execute function
23:32 - Emulating “LDA Immediate“ instruction
28:00 - Hardcoding a test program
31:50 - Emulating “LDA Zero Page“ instruction
37:20 - Emulating “LDA Zero Page,X“ instruction
38:42 - Emulating “JSR“ instruction
48:30 - Closing comments
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