TI CC-40, TI-74 and TI-95 save and load programs, how?

[robve]

I wonder what alternatives folks use to save and load programs and data from their TI CC-40, TI-74 BasiCalc, and TI-95 ProCalc.

After searching the HP forums I found only one post on using a TI-95 with the TI CI-7 cassette interface with updated TIIF2 software:

https://www.hpmuseum.org/forum/thread-18050.html
http://pengels.bplaced.net/index.php/tiif

The original TI CI-7 cassette interface is impossible to find these days. And as we all know, TI failed to deliver the TI WaferTape. The CIduino7 project emulates the CI-7 to support sending and receiving TI-74/95 programs to/from a Linux machine:

https://github.com/molleraj/ti95interface

The HEXTIr project supports SD cards for the TI CC-40 and TI-74 (and TI-95?) by emulating an external drive connected to the TI hexbus:

https://github.com/go4retro/HEXTIr
https://forum.vcfed.org/index.php?thread...ive.61305/

Unless I missed some other great projects, HEXTIr seems to be the best solution to store and retrieve programs. I wish there was a batch of HEXTIr (or siimilar) devices with hexbus compatible connectors for sale. What comes to mind is a device similar to the TRS-80 model T TPDD-2 backpack drive that Jeff_Birt improved and manufactures. Sure, a DYI comes to mind, but collecting parts, soldering, connecting, testing, and 3D printing is time consuming and may set you back more compared to producing a batch, if someone is willing to give that a go (I don't have the resources and skills to do all this for a batch.)

- Rob

[Klaus Overhage]

This was the place to buy a SD-Drive for the CC-40. With an little adapter it work with the TI-74 and with extra Software with the TI-95.
https://www.arcadeshopper.com/wp/store/#...y=27454942
I have already built such drives and adapters myself.