not sure whether this has been already posted somewhere on applefritter yet but a quick search did not find anything. So, this might be good news for some of you.
There is an interesting development made in Germany (project started in 2020) which is called "Retro Chip Tester (RCT)". What makes this thing so special - it is able to test a huge number of different SRAM, DRAM, PLA´s, GAL`s, ROM´s, PROM`s and even EPROMs from the 70´s and 80´s. It can even test, read and dump (!) the very first EPROM (1702) from Intel. The database is currently about >3300 chips and is still growing with every Firmware Upgrade you can pull from their website. An handy offline Database helps to find the appropriate item in the Software.
After seeing the presentation at "Adrians Digital Basement" Channel on Youtube I was very excited and convinced to get it for myself asap :-)
I got in touch with the developer Stephan which is a very nice guy and ordered the required boards (including the pre- programmed ATmega2560 already soldered on) for the basic configuration. They meanwhile arrived and so far I can tell the quality of these boards are pretty good. Everything is labelled clearly and the layout looks nice to me. What impressed me most is the well written documentation. It´s available in german and english and helps with the order of the parts, the assembling , the programming and how to operate the final product.
I am now waiting for the parts and cannot wait for assemble everything. The whole thing without programmer is about 100€ or a bit more depending where you buy from and what options you chose.
I was thinking to post this here in the forum because just recently an original Apple-1 has been repaired with the great help of the RCT.
My plan is to fix an original Commodore Floppy Drive 4040 next by using the RCT.
PS: I am not getting funded by the developer for this post in any way - I just want to share my enthusiasm and believe for some of you it will be a great help for troubleshooting old retro computers especially the Apple-1 (originals and clones) ....