W&W 32K RAMBOX re-initialization ROM

[Diego Diaz]

Hi Jürgen, Peter,

The access to the ERAMCO RSU-2 128K Rambox is documented in this article from 2008... (Tempus fugit).

Also there is an ERAMCO RSU-2 256K Rambox using 10x62256 RAM chips. I have not seen this documented anywhere, so it may be just a prototype.

I have only seen one such unit, wich I repaired back in 2017. Coincitentally I have received it again for service and OS restore this very morning.

The access to the 8x32K banks in this unit is also SW driven, but works in a very different way from its 128K counterpart.

I haven't yet got my notes about the details, and certainly I can't remember the procedures from the top of my head after 7+ years.

If the owner allows me, I'd gladly share what I found in case there is some interest on the subject.

Best wishes from Spain.

Diego.

PS: @Jürgen, Finally, I managed to recover the 41CY I was working on last week.