Search found 11 matches

by soviet9922
Sat Nov 02, 2019 2:13 am
Forum: Hardware
Topic: Simple Video Mod for 210ULA
Replies: 19
Views: 19166

Re: Simple Video Mod for 210ULA

great mod work amazing in my zx81 thanks !!!
:D :D :D
by soviet9922
Sat Apr 07, 2018 4:35 pm
Forum: Hardware
Topic: TI99/4A KEYBOARD ADAPTATION
Replies: 41
Views: 20741

Re: TI99/4A KEYBOARD ADAPTATION

the picture is from another board the edge connector in the case of the kit that is sold in sell my retro they are just a couple of rows of pins.
Image
by soviet9922
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...
by soviet9922
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 :D.
by soviet9922
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...
by soviet9922
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.
by soviet9922
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...
by soviet9922
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 ...
by soviet9922
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
by soviet9922
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 :D, but i am confuse now on what pins on the keyboard should go to what rows and columns on the zx81.