MiSTer FPGA Forum

Hi everyone, Now I'm revisiting this, I'm looking at how the Arkanoid implementation in MiSTer bypasses the need for the 68705. My current understanding is that the ROMs are patched by the '.mra' files (negating decryption functions of 68705 and supplying the level lookup table) and the spinner is latched directly to the z80. Is this understanding ...

I would also like to see an authentic PC-10 implementation supporting dual-screen output and the ability to actually select between 10 games via the menu. This top screen may seem like it is doing nothing but what you've missed is a huge area of nostalgia for PC-10; this top screen is active even without crediting the machine. You could interact wi...

Hey jotego, thanks for the reply. Makes total sense to include all that information in the docs folder. I really should have spent more time going over the implementation rather than giving it just a cursory glance; my apologies. When I get the time I'll go through the MCU FPGA code in the bubble bobble core properly. My secondary objective is to b...

I think he's confused because no core is running hybrid arm/fpga as of right now. Hey zakk4223, I guess I am confused as I'm having a hard time understanding how the FPGA is supposed to understand the C++? It's not an HDL so how is it interpreted? Surely that's executing on the ARM side? I'd love to be wrong though; is there some sort of pre-compi...

Hey Jotego, having the 68705 implemented in C++ running on the ARM side works fine for MiSTer on the DE10-nano, and is likely good-enough for most people to simply enjoy playing the game, but I really want to pursue a pure HDL implementation for FPGA. I'd like the option to create a physical replacement for failing 68705s on real hardware (once a s...

Hi all, In order to properly implement games like Arkanoid, Arkanoid Tournament, Bubble Bobble and Elevator Action, there will need to be an HDL implementation of the 68705 MCU. I've been researching the history of this MCU in MAME, the trouble people had in dumping the EPROM data from them, and what the difference between Arkanoid and Arkanoid Tou...