After years of inactivity I decided to release two old project, which I started to work on in 2010, publicly on my GitHub account. I have not produced any prototypes yet, so they are currently more a draft. Both projects use a flash EPROM to store the data in the cartridge. The first one is a simple Amstrad Plus / Amstrad GX4000 cartridge, which can be equipped with an original ACID protection chip or with a Xilinx XC9536 CPLD for ACID emulation (you can read more about the emulation here).
The second project is the design of a flash cartridge, which can be programmed on a PC via USB and used in a Amstrad Plus / Amstrad GX4000. You can read more about the design in the README.md.
Maybe someone with more time is interested to take over the projects, otherwise I will work on them every now and then…
Bryce finished another hardware project, this time for the Amstrad Plus series. It is a multi cartridge, which contains a 512 KB EPROM or Flash-ROM on which you can place 4 128 KB ROMs. You can use the DIP switches on the cartridge to select which of the four ROMs shall be used by the CPC. As always you can find more information about the cartridge and the board layout in the [[Multi Cartridge|Multi Cartridge]] article in the CPC Wiki. The project can be discussed here.
NOTE: You will still need a ACID protection chip in this cartridge.
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