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TI 99/4A Eprom Cartridge
#1
Recently, I built a 8K eprom cartridge to use the >6000 space available at the cartridge slot.
This space can be used for multiple purposes. You can clone a rare Rom based cartridge or write your own.
This project uses a spare TI Invaders cartridge, though there are a few others that will work as well.
If a socket is used on the board, different cartridge roms can be exchanged on the board to change applications easily. There are also 4 Grom spaces available, these can also have sockets installed and will allow up to a possible 4 more titles on the menu along with the eprom at >6000
It appears groms have internal pre-assigned addresses so some will conflict with each other.
What's needed: a 2764 eprom(s) , a TI Invaders cartridge, optional sockets and either a eprom programmer, or a friend with one, along with soldering and desoldering skills and the necessary equipment to do it.
Dumps of Rom only cartridges are available online.

I created a PDF to help a fellow TI er build one, that I can make available here if possible. Otherwise, PM me and I'll send it to you.
* I did upload the pdf, it's attached to a message after this one.
Steve


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Messages In This Thread
TI 99/4A Eprom Cartridge - by sjt99 - 04-15-2014, 06:43 PM
RE: TI 99/4A Eprom Cartridge - by ksarul - 04-15-2014, 08:08 PM
RE: TI 99/4A Eprom Cartridge - by barryp - 04-15-2014, 09:15 PM
RE: TI 99/4A Eprom Cartridge - by sjt99 - 04-15-2014, 10:50 PM
RE: TI 99/4A Eprom Cartridge - by ksarul - 04-16-2014, 07:29 AM
RE: TI 99/4A Eprom Cartridge - by sjt99 - 04-16-2014, 11:34 PM
RE: TI 99/4A Eprom Cartridge - by barryp - 04-17-2014, 12:27 PM
RE: TI 99/4A Eprom Cartridge - by sjt99 - 04-17-2014, 02:21 PM
RE: TI 99/4A Eprom Cartridge - by astharot - 11-13-2014, 10:19 AM
RE: TI 99/4A Eprom Cartridge - by sjt99 - 11-13-2014, 10:56 AM
RE: TI 99/4A Eprom Cartridge - by astharot - 11-14-2014, 06:56 AM
RE: TI 99/4A Eprom Cartridge - by ksarul - 11-16-2014, 10:13 PM
RE: TI 99/4A Eprom Cartridge - by mahak - 08-24-2019, 06:58 AM
RE: TI 99/4A Eprom Cartridge - by surbhi786 - 09-05-2019, 06:34 AM
RE: TI 99/4A Eprom Cartridge - by surbhi786 - 09-05-2019, 06:35 AM

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