SS-50 64K RAM board – Retro Computing

SWTPC 6800 compatible 64K memory board

Is this board vintage? Frankly, no. It was designed in 2014 using a RAM chip that most definitely available in the era when SWTPC was selling their systems. The 74LS04 and the Molex connectors are vintage, but not much else is.

Features
This board was on the list of things to build, but the design was easy to visualize, and when someone contacted me about needing RAM boards for his system it just seemed like a good time to build the board.

Features include:

• Provides anywhere from 0K to 64K.
• The RAM can be enabled/disabled in 4K segments via 16 switches.
• Fully compatible with the SS-50 bus.
• Very low power.