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Mounted its part in the STM32 and installed the bootloader. Now I can load the FW IDE Arduino with USB. But that was the easy part….
I soldered other components in order to test a first test softcore that implements in HW SOC with a CPU 6809, ROM with BASIC interpreter, 2KB of RAM, VDU da 80 column, PS / 2 keyboard controller…
and this is the result:
It works! 🙂
The next step will be to assemble also on board socket for SD (to emulate an HD) e la da 512KB RAM…
I tested another softcore which also uses the external RAM and SD. The softcore implements a SOC with Z80, 64KB RAM, VDU Color, PS / 2 keyboard, 16HD emulation of SD, CP / M operating system 2.2:
Now I can move on to assemble a second PCB this time using a socket for micro SD, to prove it can also “configuration”…
For those interested I have created a page on hackaday.io with more details.
Verified even a second card this time using a micro-SD:
In the coming days I will publish full details for the realization (including layout and Gerber files) on its page hackaday.io..
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