Cartridge board for ATARI 65XE/130XE/800XE/800XL 8-bit computers based on SST39SF040 CMOS multi-purpose Flash memory chip.

The project does not use programmable logic chips such as GAL-chips.

Only conventional logic chips are used, such as 74LS00N, 74LS74N and 74LS374N.

This is a S/XEGS type cartridge that allows you to store and run dozens of games.

The ROM files for the cartridge are created from the XEX files using the CreaXin1 utility, and then merged using the XEGS Merger to combine four files into one, forming a total of 512 kb of ROM memory.

In the process of manufacturing a cartridge, microchips of Russian production can be used, such as ЭКР1533ИР23, К555ТМ2, К555ЛА3 etc.

The cartridge body consists of two 3D-printed parts. The parts connect to each other without the use of screws or glue.

The following DIP chips are required to build a cartridge:

- SST39SF040 DIP32 (1pcs)

- 74LS374N (or ЭКР1533ИР23) DIP20 (1pcs)

- 74LS74N (or К555ТМ2) DIP14 (1pcs)

- 74LS00N (or К555ЛА3) DIP14 (1pcs)

And the following SMD 1206 parts are required to build a cartridge:

- 100 nF capacitors (3 pcs)

- 6.8 uF capacitor (1 pcs)

- 11 kOhm resistors (6 pcs)

- 3.3 kOhm resistor (1 pcs)

Optional: Round Hole IC Socket Connector DIP32 (1pcs) for SST39SF040.

And you need the ability to program the SST39SF040 Flash ROM, of course. Some sort of programmer like TL866II, or something else.

To make a cartridge body, you need the ability to print models on a 3D printer. The model of the cartridge case and its cover is attached.