Kempston Electronics ZX KBD2
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Kempston Electronics ZX KBD2
I got this today attached (badly, with much blu-tack) to a zeddy.
It is a very nice keyboard to use!
It is a very nice keyboard to use!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
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- Posts: 2256
- Joined: Sat Nov 26, 2016 2:42 am
Re: Kempston Electronics ZX KBD2
Given the height of the pins any idea how this was supposed to be attached? Just a few layer of thick double sided sticky tape?
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Re: Kempston Electronics ZX KBD2
Nice ! what is the purpose of the red key ? The tracks do not seem connected to anything on the back ? Are they ?
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- Posts: 2256
- Joined: Sat Nov 26, 2016 2:42 am
Re: Kempston Electronics ZX KBD2
Not sure about the red key!
Here is a close up.
Here is a close up.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
- 1024MAK
- Posts: 5527
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
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Re: Kempston Electronics ZX KBD2
I think the red key is unallocated. It looks like it’s connected to the unused pads where the eight way ribbon cable connects to the board. Hence it’s not part of the keyboard matrix.
It could be used as a reset button if wanted (although given its position, I’m not keen on that idea).
Mark
It could be used as a reset button if wanted (although given its position, I’m not keen on that idea).
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Amp
Standby alert 
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
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ZX81 Chip Pin-outs
ZX81 Video Transistor Amp


There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb

Spring approaching...
Re: Kempston Electronics ZX KBD2
I still have this keyboard somewhere and If I recall correctly it was attached with the thick double sided "sticky foam" similar to what Karl uses to attach the top layer of his "Clicky" keyboards.
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- Posts: 2256
- Joined: Sat Nov 26, 2016 2:42 am
Re: Kempston Electronics ZX KBD2
Thanks Moggy.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Re: Kempston Electronics ZX KBD2
I got one of my ZX 81's working today using this keyboard,
The red key doesn't seem to do anything, so far
I thought that it looked like the return/enter key.
The red key doesn't seem to do anything, so far

I thought that it looked like the return/enter key.
- 1024MAK
- Posts: 5527
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
- Contact:
Re: Kempston Electronics ZX KBD2
Um, surely you mean’New Line’ not return/enter….
About the red key, did you read my earlier post?
Mark
About the red key, did you read my earlier post?
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Amp
Standby alert 
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Spring approaching...
ZX81 Chip Pin-outs
ZX81 Video Transistor Amp


There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb

Spring approaching...