TI 99 - Hardware Identification needed

[jens-eike]

I used the board to make a GRAM-device (like GRAM-Kracker) with battery backup and logic for bank switching the >6000 ROM XB-style.

The two stacked NEC D43256 are the GRAM, two 6264 (below the leaked battery) are the ROM (when write protected).

[Hans23]

Hey, I was given a collection of homebrew TI hardware that smells 1980ies DIY all over and that I don't really want to keep.  If anyone's interested in these things, they're free if you pay postage.  Here's what I have:

 

 

Some EPROM card - The EPROM contains unknown-ti-rom.BIN.

 

 

Some I/O interface?

 

 

Looks like an EPROM programmer for the cartridge port.

 

 

A H.Martin module with 32K SRAM fitted - There is a stack of the 8K RAMs to the right.

 

 

Edited March 13, 2021 by Hans23
Identified the RAM board

[RickyDean]

1 hour ago, Hans23 said:

Hey, I was given a collection of homebrew TI hardware that smells 1980ies DIY all over and that I don't really want to keep.  If anyone's interested in these things, they're free if you pay postage.  Here's what I have:

 

 

Some EPROM card - The EPROM contains unknown-ti-rom.BIN.

 

 

Some I/O interface?

 

 

Looks like an EPROM programmer for the cartridge port.

 

 

A H.Martin module with 32K SRAM fitted - There is a stack of the 8K RAMs to the right.

 

 

I'll take them, you already have my info, and I can pay with paypal. If they have not been spoken for thst is.

[Hans23]

2 minutes ago, RickyDean said:

I'll take them, you already have my info, and I can pay with paypal. If they have not been spoken for thst is.

You got them.  I'll get in touch directly.

[+Ksarul]

That weird I/O interface thing looks like it might be a RAM tester of some kind, based on the horde of LEDs at the top of the card. . .

 

The EPROM programmer looks like it might be one from either the TI Revue or 99-Journal. ISTR that both of them published plans for Eprommers. . .with layouts. I think there might have been one in CK too.