great mod work amazing in my zx81 thanks !!!
Search found 11 matches
- Sat Nov 02, 2019 2:13 am
- Forum: Hardware
- Topic: Simple Video Mod for 210ULA
- Replies: 19
- Views: 19166
- Sat Apr 07, 2018 4:35 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
- Wed Apr 04, 2018 11:17 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
That is a lot of work it could be simpler that the adapter just have some pins for each zx keyboard signal and then you can do your own wiring at your own need. I i have a couple of zx spectrum russian clones in need of a good home, and borked ti99s are not that rare and quite cheap they do ideal ca...
- Mon Apr 02, 2018 5:37 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
You are going to do a conversion kit ?, how it works ?, will wait for it .
- Sun Apr 01, 2018 10:10 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Thanks for all the help i was able to work it out and have the keyboard working on my spectrum :). Now i have a 128k spectrum board that i love to get it in a ti99 case have another ti that is non working for the transplant. This keyboard is much more nice to type that the previous one also and this...
- Wed Mar 14, 2018 6:00 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Thanks for the diagrams this last one is really help full going to give it a shot tonight.
- Mon Feb 19, 2018 11:42 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Thanks for the reply, on my previous post i attached a picture of my modified keyboard. The matrix seem to be identical to the first post. I have cut the traces and do the rewiring as indicated in the start of the tread, verified all cut traces and connections using my multi-meter. Here are some pic...
- Mon Feb 19, 2018 5:35 am
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Thanks for the schematics i have build the keyboard modification like the pictures this is my keyboard: https://preview.ibb.co/gse4Y7/IMG_20180216_011139.jpg looking at the schematic tried to understand how the pinout should be, i also added zxspectrum pin names because i plan to use it also on the ...
- Fri Feb 09, 2018 4:35 am
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Thanks that could be great, because i'm confused on how need to be connected to the zx81
- Thu Feb 08, 2018 2:53 pm
- Forum: Hardware
- Topic: TI99/4A KEYBOARD ADAPTATION
- Replies: 41
- Views: 20741
Re: TI99/4A KEYBOARD ADAPTATION
Have done the mod to a ti99/4 keyboard like the picture , but i am confuse now on what pins on the keyboard should go to what rows and columns on the zx81.