A portable NES simulator for embedded processors.
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18-05-2018 PPU performance improvement
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Add buffers for individual sprites
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Clean code, remove unused macro switch, i.e. JEG_USE_DIRTY_MATRIX
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16-05-2018 Add more default roms
- Add two default roms
- ROM1: City Tanks
- ROM2: Road Fighter
- ROM3: Super Mario Bro
- ROM4: Contra (Need implementing new mapper)
- Add two default roms
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15-05-2018 Add support for STM32F746G-Discovery
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Add dedicated BSP folders for V2M-MPS2 and STM32F746G-Discovery
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Add dedicated macro switch to disable FILE-IO
Disable it so you can port and test the NES emulator with default City Tank rom
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07-05-2008 PPU improvement
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Seperate PPU into two versions, one for scanline based and one for partial-scanline based (while another part is pixel based)
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Apply compact dual pixels to background buffer
TODO: Fix debug mode
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Improve the readability
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05-05-2018 PPU improvement
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Add background buffer for name tables.
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Add Dirty Matrix to background buffer refreshing scheme. Only changed tile will be updated.
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Add debug mode to show background buffer.
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Gain > 10% performance improvement.
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03-05-2018 PPU refactory
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Improve the PPU performance and readabiligy.
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Add dedicated jeg_cfg.h for configuration purpose.
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Improve the display quality - solve the blinking-sprite issue.
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20-04-2018 Support both LiteNES and JEG
You can switching two emulator in MDK projects:
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V2M-MPS2-jeg for JEG
PPU looks good, but 6502 emulation part need to be rewritten. PPU performance could also be improved.
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V2M-MPS2-LiteNES.
The performance has been improved. The PPU looks buggy and I decide to not use it any more.
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Download the latest version of jeg from https://github.com/semiversus/jeg and unzip all the files under EmbeddedNES\mps2_template\example\jeg folder.
A MDK (https://www.keil.com/demo/eval/arm.htm) project has been provided:
./mps2_template/example/build/mdk
No real hardware is required but you need a professional license (which you can request an 7-days evaluation professional license) to run the Fast Model.
After you open the project with MDK:
* Compile it
and
* Press the Debug button.
A Cortex-M7 Fast Model (a.k.a FVP) will be launched. If you don't see anything happened, please make sure "Models Cortex-M Debugger" is selected in the debugger settings by checking following path:
Menu Project->Options for Target->Debug
All the configuration and settings of FVP should be included in this project. If you find nothing, please let me know.
If you are lucky enough to have a MPS2+ board, then you can debug it on the real hardware. (Currently, it is extremely slow, I am working on it...)
Enjoy.