The MOOH memory & SPI board
Posted: Thu Sep 14, 2017 10:13 pm
As soon as I had the Spinx-512 board working correctly, I started on the successor but due to the VCF and everything that followed, the development was stalled for a year, with mainly just some PCB routing left. The last weeks I have picked up on it and here we go:
The MOOH - a 512 KB memory extension + SPI interface cartridge board. Sounds a lot like the Spinx-512, no? So what's different?
- a ROM socket - for booting without DriveWire or MPI
- the "nx32" banking scheme is ditched (no compatibility with spinx-512 or the +32K board), instead:
- a DAT (dynamic address translator, or MMU) pretty much compatible with the one in the CoCo3!
The 65SPI-based 4-port SPI interface (and SD card socket) remains the same
It was easy to tweak the FUZIX dragon-nx32 port to run on this board (with the same 32KB banking) but of course the main target is the long-time wet dream of running NitrOS-9 Level 2 on the Dragon!
The MOOH - a 512 KB memory extension + SPI interface cartridge board. Sounds a lot like the Spinx-512, no? So what's different?
- a ROM socket - for booting without DriveWire or MPI
- the "nx32" banking scheme is ditched (no compatibility with spinx-512 or the +32K board), instead:
- a DAT (dynamic address translator, or MMU) pretty much compatible with the one in the CoCo3!
The 65SPI-based 4-port SPI interface (and SD card socket) remains the same
It was easy to tweak the FUZIX dragon-nx32 port to run on this board (with the same 32KB banking) but of course the main target is the long-time wet dream of running NitrOS-9 Level 2 on the Dragon!