Connecting a USB keyboard to One Chip MSX

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By zett

Hero (608)

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25-10-2018, 22:59

hmmm https://www.adafruit.com/product/1736 is a nice small keyboard hopefull it works on the sx-1

By hamlet

Scribe (3628)

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25-10-2018, 23:19

This one looks very nice! Good choice, hope it works with the SX-1.
I'm more lucky with older USB keyboards. They need to talk the PS/2 protocol or you need to buy a (expensive) active USB to PS/2 converter. But, you have to test it. None of my modern USB keyboards work with the Zemmix Neo or the SX-1. Even some older PS/2 keyboards (those that need to much ampere) work proper. For example a Model M from 1991 does not work, but a Cherry USB from 2001 do. No need for that cheap USB-PS/2 converter, they are useless. You will need a active one. I bought this model, which made me happy.

By Louthrax

Prophet (2406)

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10-05-2020, 14:28

Bumping on the subject, I'm currently looking for a wireless keyboard that I could connect to my Zemmix Neo.

Has any of you guys managed to do this ? If yes, how did you do that (USB or PS2 keyboard, adpater... ?).

I've ordered a Logitech wireless PS2 keyboard, not sure yet if that will work. I also looked for Startech PS22USB adapters mentionned by Grauw in his first post, but they seem totally unavailable today.

I do not care too much about key ghosting or latency (I'm using joysticks for games), but that's a keyboard I'd like to use in my living room from the sofa (2 meters away from the OCM), and cables have a hard time with my dogs running in the way and getting their legs into it Smile

By bsittler

Master (243)

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12-05-2021, 08:29

I use the Adder adapter with a Logitech MX Keys (US layout) in 2.4 GHz wireless mode with the USB dongle plugged into the Adder adapter and it works well. I didn't try the Nemesis test though I just tested and all four diagonal chords work correctly even while firing using the space bar in Nemesis. The "game space button" (option/start) works fine in conjunction with the diagonal chords too of course

I also previously used this small and cheap USB/PS/2 hybrid keyboard but the layout is a bit too cramped for me and many of the special OCM toggles required an awkward extra chord to reach the fn layer. However it did work just fine, and if your hands are compact and you don't anticipate using the OCM special combos (slot mode cycling, volume adjustment, turbo adjustment) often it might be great

By AxelStone

Prophet (3030)

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12-05-2021, 12:06

For me, in the end, the best solution is to connect a normal and cheap basic PS2 keyboard. The only key combination that can produce problems with ghosting is the Konami combo (cursors + space), but using the trick of Windows Key there is no problem. Any other combination used by other companies (Microcabin with C + X, Compile with shift + Z, etc) is not going to give ghosting problems. And of course, if the game allows you to define keys, you can define lots of combinations without ghosting problems.

By bsittler

Master (243)

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14-05-2021, 06:44

Did anyone succeed in using MSXVR as a keyboard for OCM? I tried using the Adder adapter but nothing happened. Same MSXVR works fine as a keyboard for the Mac though

By hamlet

Scribe (3628)

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14-05-2021, 17:39

bsittler wrote:

Did anyone succeed in using MSXVR as a keyboard for OCM? I tried using the Adder adapter but nothing happened. Same MSXVR works fine as a keyboard for the Mac though

Neither the OCM, Zemmix, the whole 8bits4ever assortment nor the Minime or the SM-X does work with the MSXVR keyboard mode.
Tested all of them this afternoon (was great fun to try all the machines). I used the same Adder as you mentioned (which works very well with other keyboard, even Apple and old Model1 types) without success.
Fortunaly my Leopold does. Wink

By st1mpy

Paladin (805)

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14-05-2021, 21:05

Personally I prefer a simpler keyboard design than the msxvr, with less keys and more retro. I've seen some examples of connecting Nintendo Famicom keyboard for Family Basic to msx or pc, and that looks nice. That plus Famicom Disk system to msx Quick Disk converter would be a nice setup.

By bsittler

Master (243)

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15-05-2021, 07:08

Hah! I have that Nintendo keyboard somewhere but it doesn't get much use. The layout is missing some keys (Tab!) and while you could probably repurpose F6-F8 the keys also make a strange sound and don't feel very nice, both because of what switch they use I think. At least they got the right cursor layout! Also Family BASIC is a good reminder of just how awesome MSX-BASIC is, though the demo program is cute at least

Also the complete lack of interoperability with the Disk System is a bit mind-boggling. Cassettes are a pain

By hamlet

Scribe (3628)

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15-05-2021, 08:41

The greatest keyboard of all (or the good ol') times:

The Coleco Adam keyboard using a USB adapter.
I also own a Famicom one, but I doubt it is worth the effort to build a adapter for this. Feels cheap build quality.

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