ROM/RAM board, with the original 6502 CPU*, and got a READY prompt no problem. Switching off the ROM, and rebooting also brought up the READY prompt, so the ROM was working. Switching off the RAM and I got a black screen. (* actually just looking at the photos, it's not the original CPU or 6522, both have been replaced at some point, as has the RS branded 7425 below, I'll add those to the list)
ROM/RAM board in place, that is all working nicely, I also fitted a user port piezo buzzer, which gives sound to games which support it such as Space Invaders and things like Down from Revival Studios.
If you want to support this blog, you can donate via Patreon or Paypal, or buy something from my store.