6502-emu
beebjit
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| 6502-emu | beebjit | |
|---|---|---|
| 1 | 1 | |
| 29 | 124 | |
| - | - | |
| 0.0 | 8.7 | |
| almost 2 years ago | 27 days ago | |
| C | C | |
| MIT License | GNU General Public License v3.0 or later |
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6502-emu
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I made Ben Eater's 8-bit breadboard computer Emulator in C++
I wrote an emulator for my own 6502-based computer, in C:
https://github.com/DavidBuchanan314/6502-emu/
The hardware design was largely based on http://searle.x10host.com/6502/Simple6502.html - the 6850 UART is the only peripheral that is emulated.
The CPU implementation is "complete", and passes various 6502 test suites.
Looking back, there's one big thing I'd like to improve - all memory bus accesses should be done through a getter/setter function, which implements the address decoding logic to decide whether the access should be directed to RAM, or a peripheral. The current implementation of peripheral access, iirc, is a bit of a hack.
beebjit
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MHz 6502
I was wondering how quick an emulated 6502 could go. This project claims 10GHz+ using JIT emulation: https://github.com/scarybeasts/beebjit
What are some alternatives?
SAP-1 - Simple as Possible CPU Architecture
bbc-fdc - Floppy disk interface for Raspberry Pi
json65 - A JSON parser written in 6502 assembly language.
CoPro6502 - FPGA implementations of BBC Micro Co Processors (65C02, Z80, 6809, 68000, x86, ARM2, PDP-11, 32016)
champ - A 65C02 profiler
revs-beebasm - Fully documented and annotated source code for Revs on the BBC Micro
TinyE8 - Ben Eater's 8 bit breadboard computer emulator in C++
reinette-II-plus - reinette II plus, a french Apple II plus emulator, using SDL2 and powered by puce6502, a MOS 6502 cpu emulator
puNES - Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music Player (Linux, FreeBSD, OpenBSD and Windows)
primula - A simple circuit simulator