ADDS VT220 Converter
Posted: 19 May 2019, 02:25
Hi All,
I finally got around looking more into this keyboard and making the converter integrated into the keyboard.
So this keyboard has the option to run either in AT mode or polling mode. Polling mode I'm guessing is the ADDS protocol and I will have to dive into this protocol in a later stage.
The way to select the different mode is like the other ADDS board that I converted where you have to have the correct jumpers in place in order for it to use that protocol.
Jumpers:
I have noticed that the keyboard in AT mode really doesn't have all the correct codes set for all of the keys outside of the alpha keys and some of the modifiers.
Additionally, the backspace key and some of the function keys needed to be remapped.
Here is the pinout of the keyboard for anyone else that is trying to convert this keyboard. I will update the Wiki with this information as well.
Pins:
I have the keyboard so that F13 is ESC right now but I might make layers in the future so that the keyboard actually outputs what it was suppose to do base on the sticker card at the top.
Remap:
Thanks for having a look.
I finally got around looking more into this keyboard and making the converter integrated into the keyboard.
Spoiler:
The way to select the different mode is like the other ADDS board that I converted where you have to have the correct jumpers in place in order for it to use that protocol.
Jumpers:
Spoiler:
Additionally, the backspace key and some of the function keys needed to be remapped.
Here is the pinout of the keyboard for anyone else that is trying to convert this keyboard. I will update the Wiki with this information as well.
Code: Select all
Pins Function
1 VCC
2 GND
3 DATA
4 CHAS GND
5 CLOCK
6 N/A
Spoiler:
Remap:
Code: Select all
remapblock
EXTRA_F1 BACKSPACE
F19 LALT
F22 COMMA
INTERNATIONAL_1 PERIOD
F12 F11
F13 F12
PAD_EQUALS ESC
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