240p Famicom Cart
What is "240p test suite"
A homebrew software suite for video game consoles developed to help in the evaluation of upscalers, upscan converters, line doublers and of course TV processing of 240p video. The Wii, Dreamcast and GameCube versions have modes for 480i, 288p, 576i and 480p evaluation as well.
It consists of tests designed with the processing of 240p signals in mind, although when possible it includes other video modes and specific tests for them. These have been tested with video processors on real hardware and a variety of displays, including CRTs, PVMs, BVMs and Arcade monitors via RGB.
How to make a Famicom or NES Cart
Download the latest zip from https://sourceforge.net/projects/testsuite240p/files/NES/
The process for building the NES / Famicom cart is quite well documented into the file making-carts.md that is inside the ZIP file.
Basically a UNROM donor (here Dragon Quest II) is needed and the easiest is to use a 27c512 eprom. It would also work with 32 pins eproms but more re-wiring is needed in that case.
The steps are:
- Remove header of the ROM and then flash the eprom.
- Remove the PRG ROM
- Bend up pin 22 and connect it to GND.