## RAM/ROM Card

The latest revision of the RAM/ROM card contains up to 64KB of RAM and 32KB of ROM. The mapping of RAM versus ROM can be controlled in software using a single 8-bit register.

### v1.0

* First custom PCB with support for 64KB RAM + 32KB ROM.
* Shadowing BANK1 is optional. Those ICs can be omitted.

### v0.1

* Initial hand-wired version with only 32KB RAM and 32KB ROM.


## Videos

Video covering the high-level design, pld developent, ordering, assembly and test of the v1.0 card:

[![HBC-56: New 96KB RAM/ROM card with runtime-controlled shadowing](https://img.visualrealmsoftware.com/youtube/thumb/CFTjE6XcWkM?v=2)](https://youtu.be/CFTjE6XcWkM "HBC-56: New 96KB RAM/ROM card with runtime-controlled shadowing")

## Thanks

Thanks to PCBWay for supporting this build.

[![PCBWay](/img/pcbway_sm.png)](https://www.pcbway.com/)
