Jupiter ACE memory map can be found there: http://k1.spdns.de/Vintage/Sinclair/80/ ... memory.txt
Please note that the 8K ROM is full. You can use larger EPROM chip but the address deciding is simplified and you will not gain much. The new address decoder is needed.
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dessony : have a look into the Jupiter's memory map. It looks like a Swiss cheese :lol: due to a partial address decoding. Any user memory extension can sit between 0x4000h and 0xFFFF addresses. So, the easiest way to extend the user memory from 1K to 17K (+16K) is employing any 16K RAMpack for ZX8...
I've been thinking about re-designing the PCB completely and make Jupiter in the ZX Speccy format, using newer components like 6116 SRAM chips instead of 2114, but this is a long shot.
So sorry, I would not publish Gerbers or source files for the main PCB on any public website. I am not going to order another batch of these boards in near future, because I am busy with a few bits and bobs for my Jupiter. I should publish on there detailed photos how I made the keyboard useful. I h...
The keyboard overlay that I printed on a self adhesive vinyl sheet and than sticked to the 1.0mm PCB overlay. I can share the Gerber files for it and you can order a small batch of them by yourself if you wish.