文件列表:

.bazelrc (300, 2022-09-05)
BUILD (18, 2022-09-05)
WORKSPACE (1837, 2022-09-05)
arduino (0, 2022-09-05)
arduino\test_sram (0, 2022-09-05)
arduino\test_sram\test_sram.ino (7743, 2022-09-05)
docs (0, 2022-09-05)
docs\emulator-nes-background.png (264691, 2022-09-05)
docs\fpga_arduino_setup.jpeg (2867517, 2022-09-05)
docs\fpga_splash_donkeykong.jpeg (3031752, 2022-09-05)
docs\fpga_splash_mario.jpeg (3303037, 2022-09-05)
nes (0, 2022-09-05)
nes\BUILD (16678, 2022-09-05)
nes\cpu6502 (0, 2022-09-05)
nes\cpu6502\ALU.v (3095, 2022-09-05)
nes\cpu6502\ALUFullAdder.v (335, 2022-09-05)
nes\cpu6502\AddressBusRegister.v (689, 2022-09-05)
nes\cpu6502\Cpu6502.v (9345, 2022-09-05)
nes\cpu6502\DL.v (572, 2022-09-05)
nes\cpu6502\DOR.v (963, 2022-09-05)
nes\cpu6502\Decoder.v (67065, 2022-09-05)
nes\cpu6502\IR.v (1045, 2022-09-05)
nes\cpu6502\PCH.v (1342, 2022-09-05)
nes\cpu6502\PCL.v (1488, 2022-09-05)
nes\cpu6502\ProcessorStatus.v (3212, 2022-09-05)
nes\cpu6502\ProcessorStatusFlags.hpp (332, 2022-09-05)
nes\cpu6502\Register.v (931, 2022-09-05)
nes\cpu6502\Routing.v (3178, 2022-09-05)
nes\cpu6502\TCU.v (562, 2022-09-05)
nes\cpu6502\assembler (0, 2022-09-05)
nes\cpu6502\assembler\Address.cpp (661, 2022-09-05)
nes\cpu6502\assembler\Address.hpp (909, 2022-09-05)
nes\cpu6502\assembler\AddressingMode.hpp (630, 2022-09-05)
nes\cpu6502\assembler\Assembler.cpp (5168, 2022-09-05)
nes\cpu6502\assembler\Assembler.hpp (1662, 2022-09-05)
nes\cpu6502\assembler\Byte.cpp (309, 2022-09-05)
nes\cpu6502\assembler\Byte.hpp (449, 2022-09-05)
... ...

# verilog-nes ## **< WORK IN PROGRESS >** Building a [Nintendo Entertainment System](https://en.wikipedia.org/wiki/Nintendo_Entertainment_System) in Verilog. Aim: to play the original NES [Super Mario Bros](https://en.wikipedia.org/wiki/Super_Mario_Bros.) ROM. ## Current Status - Implemented - 6502 CPU working and passing tests (for official opcodes) - OAM DMA working - PPU background layer - Emulation - Verilator emulation running in C++ with [PixelGameEngine](https://github.com/OneLoneCoder/olcPixelGameEngine) renderer from [OneLoneCoder](https://www.onelonecoder.com) - Super Mario Bros - now able to reach splash screen - FPGA - NES Running on ARTY A7 hardware - Arduino based interface for uploading ROMs and debugging the NES design - Super Mario Bros - now able to reach splash screen  | | | | |-|-|-| |  |  | | # Dependencies - Bazel v5.0.0 ```bash brew install bazel ``` - MacOS # C++ Debugging Bazel builds on MacOS - Add '--spawn_strategy=local' and '--config debug' to bazel command line, to make sure symbols are correctly included in your build - When debugging in VSCode with a C++ config, you can see symbol values - Breakpoints can be set in source files via VSCode - When lldb stops execution at a breakpoint, VSCode is not currently able to load the correct source file - further investigation required # 6502 cpu ## Build Unit Tests > bazel build //nes:test-cpu6502 --incompatible_require_linker_input_cc_api=false ## Run Unit Tests > ./bazel-bin/nes/test-cpu6502 # NES PPU (Picture Processing Unit) ## Build Unit Tests > bazel build //nes:test-ppu --incompatible_require_linker_input_cc_api=false ## Run Unit Tests > ./bazel-bin/nes/test-ppu # NES CPU + PPU ## Build Unit Tests > bazel build //nes:test-nes --incompatible_require_linker_input_cc_api=false ## Run Unit Tests > ./bazel-bin/nes/test-nes # VGA Output Emulator Currently supported on MacOSX. Implemented with the [OneLoneCoder Pixel Game Engine](https://github.com/OneLoneCoder/olcPixelGameEngine). Test the VGA output module. ## Build > bazel build //nes:emulator-vga --incompatible_require_linker_input_cc_api=false --config release ## Run > ./bazel-bin/nes/emulator-vga # 6502 Emulator Currently supported on MacOSX. Implemented with the [OneLoneCoder Pixel Game Engine](https://github.com/OneLoneCoder/olcPixelGameEngine). ## Build > bazel build //nes:emulator-cpu --incompatible_require_linker_input_cc_api=false --config release ## Run > ./bazel-bin/nes/emulator-cpu ## Keyboard Controls | Key | Action | | ------------: | ------------- | | Z | Reset Simulation | | R | Switch between single step and run mode | | SPACE | Step through a single Opcode (in single step mode) | # NES Emulator Currently supported on MacOSX. Implemented with the [OneLoneCoder Pixel Game Engine](https://github.com/OneLoneCoder/olcPixelGameEngine). ## Build > bazel build //nes:emulator-nes --incompatible_require_linker_input_cc_api=false --config release ## Run > ./bazel-bin/nes/emulator-nes # Debugger CPU Debugger interface for interacting with CPU6502, intended for use with SPI comms. ## Build > bazel build //nes:test-debugger-cpu --incompatible_require_linker_input_cc_api=false ## Run > ./bazel-bin/nes/test-debugger-cpu # Debugger NES Debugger interface for interacting with NES, intended for use with SPI comms. ## Build > bazel build //nes:test-debugger-nes --incompatible_require_linker_input_cc_api=false ## Run > ./bazel-bin/nes/test-debugger-nes # Games Information from .nes rom headers dumped with scripts/parse_ines.py - Super Mario World ``` PRG ROM 2 x 16 KB units CHR ROM 1 x 8 KB units mirroring: horizontal has batter backed prg rom: False has trainer: False ignore mirroring control: False mapper number: 0 ``` - Super Mario World 2 ``` PRG ROM 8 x 16 KB units CHR ROM 16 x 8 KB units mirroring: vertical has batter backed prg rom: False has trainer: False ignore mirroring control: False mapper number: 4 ``` - Super Mario World 3 ``` PRG ROM 16 x 16 KB units CHR ROM 16 x 8 KB units mirroring: vertical has batter backed prg rom: False has trainer: False ignore mirroring control: False mapper number: 4 ``` - Kirby's Adventure ''' PRG ROM 32 x 16 KB units CHR ROM 32 x 8 KB units mirroring: vertical has batter backed prg rom: True has trainer: False ignore mirroring control: False mapper number: 4 ''' # Mappers - Mapper number: 0 = [NROM](https://wiki.nesdev.com/w/index.php/NROM) - Mapper number: 4 = [MMC3](https://wiki.nesdev.com/w/index.php/MMC3) # Disassembly - [Super Mario Disassembly](https://gist.github.com/1wErt3r/4048722) - useful for stepping through code - NOTE: infinite loop at 0x8057 appears to be label "EndlessLoop" - perhaps we can step through code from 'start' to see what needs to be emulated so far

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