I have an old Real Color Displays RC880 LED sign.·
The CPU board no longer functions because the ROM chipped was damaged through improper insertion (meaning it got put in backwards
Getting it repaired by the manufacturer seems unlikely, as they haven't made these signs in nearly a decade.·
I'm left with two options; one is to rewrite the firmware for the CPU board (it uses a Z80), which would require figuring out how the CPU board is built.
Option two is the more likely of the options (and happens to be the relevant option for this forum) is to create a new CPU board with an SX.·
The actually LED display itself it fairly easy to control.·
There are 7 rows by 80 columns of LEDs.·
The rows are strobed and the columns are controlled by shift-registered daisy chained together.
So the question I'm asking would it be possible and reasonable to do that with the SX or would I be better off preserving the original CPU board?
Any input would be appreciated.