## TMS9918 Display Card

This TMS9918 display card is based on a [popular circuit](https://cdn.hackaday.io/files/5789247676576/9918-SRAM.pdf) to use SRAM with the TMS9918.

There are a couple of changes however:

* The 74LS574 (U5) I have replaced with a 74245 bus tranceiver.
* I'm not using the delay circuit. I do have it as an option, however haven't needed it.

## Emulator

The emulator includes full support for this TMS9918 card using my [vrEmuTms9918 emulator library](https://github.com/visrealm/vrEmuTms9918).

### v1.0

* First custom PCB

### v0.1

* Initial hand-wired version


## Videos

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

[![HBC-56: New TMS9918A graphics card](https://img.visualrealmsoftware.com/youtube/thumb/oR_TiEgSD2k?v=2)](https://youtu.be/oR_TiEgSD2k "HBC-56: New TMS9918A graphics card")

## Thanks

Thanks to PCBWay for supporting this build.

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