The 32k sideport memory expansion card is available now on http://arcadeshopper.com
This satisfies requirements of many of the multicarts that lead into expansion ram or otherwise require it for execution, such as many of the games on the 6 Games carts from Gazoo, the 2Meg multi-cart from Gazoo, many of the games on the XB2.7 suite, and many of the .bin images for the FlashRom99.
For details about the board see http://ti994a.cwfk.net/32k.html And or watch this video that covers it pretty well:
This memory expansion is a standard 32k. It connects to the sideport of the 4A console or extension port from other sideport devices.
It provides the standard 32k expansion equivalent to the TI expansion card made by TI.
It has 1 jumper to configure the power source, either:
- (TI) the edgecard pin 1 power provided by the TI console
- (Ext) the external barrel jack.
If you are connecting directly to the sideport, then the (TI) setting should be right for you. If you have a speech synthesizer or other device connected to the sideport first, then you have some options. There are instructions on the website for modifying a speech synthesizer to pass power through on pin 1. This is also illustrated in Omega's video. Thanks Omega! The (Ext) setting can be used if you want to follow Shift838's instructions for providing nano-peb power from the speech synthesizer. The (Ext) setting just requires a tip positive +5v supply, such as you get with a USB to Type M cable adapter such as the following: https://smile.amazon...0?ie=UTF8&psc=1