Ok lets say some things about it. Is a board for the third memory slot of A800.
My intention and its main operation, is to run SDX with RTC and to handle an external cartridge above of this like the standalone SDX cartridge. As usuall, without the need to modify your computer.
At the same time it must provide the lost 16K memory of the third memory slot.
This memory will be needed for the users that have only a simple Axlon memory board (for example 512k) in the middle slot. Will not needed for the owners of GPB, or those with some Axlon boards who provide also the rest of main memory.
The setup of this board will be available from a menu, like this in the GPB.
I'm also thinking about what I could do with the remaining 256KB of the flash rom, like putting some OSS tools in there, selectable via Patrick's menu.
We'll see..
Now as for the external cartridge, it will be work via an small adapter which will snap into the left cartridge slot of the A800. In this someone will be able to clip the external cartridge.
For the most skilled user who can disassemble his Atari, and place a small adapter on it without naturally solder cables etc., the profit will be to be able to use naturally, without adapters, the left cartridge of his Atari as is.
As I said these are my intentions, but I will know better after the sample pcbs arrive here and work with these.