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Finalgrom99 for the TI99/4A
Retrocomputing

The PCB now has Gold fingers.

Here we have the excellent FinalGrom99 designed by Ralph Benzinger. This Cartridge will allow you to load rom images from an sd card. This comes in a custom 3d printed case. This does not come with an sd card, you will have to privide that yourself.

It can come in various colours, at pressent i have Red, Light Blue, Black , Grey, Biege, White, Orange, Semi Translucent Green and Semi Translucent Blue.

Please note there maybe some minor imperfections in the prints.

Take note of the side slot as the FinalGrom99 does not work on Qi machines.

A QI machine is identified by the silver grounding fingers on the expansion slot where a none QI machine has brass coloured grounding fingers.

If no colour is stated you will recieve a FinalGrom99 in a Black case.

This is for the FinalGrom99 and case only.

Thanks for looking.

This sale is for the Finalgrom99 only. You will have to provide your own sd card and images.

Links to code and documentation

Documentation (endlos99.github.io)

Design Files (github.com)

Shipping policy

No information available.

finalgrom99

Sold by 8bit-Tronics

$67.78

No tax for United States [change]
Stock available: 5

The seller

8bit-Tronics

8bit-Tronics logo

KINGS LYNN, Norfolk, UK
0 orders since Aug 19, 2026
Modern devices for retro computers