geekhack Projects > Making Stuff Together!
TMK NEC PC98 Keyboard Converter
nevin:
--- Quote from: Rayndalf on Tue, 08 December 2020, 20:50:59 ---Is this compatible with the PC9801-98 as well?
I have one and I'd love to get it up and running.
--- End quote ---
@Rayndalf interesting ergo board. what does the connector look like? model info off the back of the board?
@EpikalPuppy - check the info on github https://github.com/tmk/tmk_keyboard/tree/master/converter/pc98_usb
first two bits of info is the connector and the reference table to which pins they should go to on the microcontroller
@hasu - are there any pull-up resistors needed for the NEC-PC-98 converter (like some of your other converters)?
nevin:
BTW, nice job hasu, how long have you been working on this one?
- keep being awesome!
hasu:
Rayndalf,
It should work. I have the board too.
https://deskthority.net/viewtopic.php?f=62&t=5212
nevin, Thanks for your help as always.
--- Quote ---@hasu - are there any pull-up resistors needed for the NEC-PC-98 converter (like some of your other converters)?
--- End quote ---
Good qustion. I don't use them on this converter and it should work without them.
I think having pull-up resistors will be good probably or not harmful at least. To be honetst I don't know and didn't consider this closely on microcontroller UART.
So I'd recommend to make this converter without pull-up resistors until something bad happens.
--- Quote ---BTW, nice job hasu, how long have you been working on this one?
--- End quote ---
I made this converter for my PC9801-98 in 2013 and added support for a few pc98 keyboards I obtaioned so far.
I'm happy to improve firmware code when getting feedback from people.
EpikalPuppy:
--- Quote from: hasu on Tue, 08 December 2020, 20:22:22 ---I've never seen that keyboard, it is very interesting. Its plug is same 8P Mini-DIN as PC-9801 one. But its layout has no key specific to pc98 and it looks like more IBM PC.
I'm not sure this keyboard is for PC-9801 but it is still worth to try.
https://geekhack.org/index.php?topic=110093.0
Unfortunately I don't have time to guide you step by step for this converter :( I hope someone can help you.
As for HEX file, you basically need to build firmware from source code with 'make -f Makefile.32u4'. for Teensy.
But I can build its firmware for you if it is not easy. Let me know once your converter hardware is ready.
Check wiki for how to build firmware.
https://github.com/tmk/tmk_keyboard/wiki
--- End quote ---
Hey! I have my teensy 2.0 here with jumper wires on the needed pins. I think I figured out how the pinout corresponds with the 8 pin mini din, and I just need the HEX file now to test it!
nevin:
nice. thanks again as always hasu.
@EpikalPuppy - give me a min & i'll attach the default hex and we can make adjustments to the layout once you see what it's doing.
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