Z80 processor
-
- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Z80 processor
Hi all
I have a zeddy with a dead Z80 processor. Given that pokemon is having a well earned holiday from Sell My Retro anyone know a reliable source of Z80s for the zeddy?
Thanks!
I have a zeddy with a dead Z80 processor. Given that pokemon is having a well earned holiday from Sell My Retro anyone know a reliable source of Z80s for the zeddy?
Thanks!
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: Z80 processor
Very reliable is reichelt.de who ship worldwide.
Also worldwide shipping is eBay seller
https://www.m.ebay.de/sch/i.html?sid=gc ... rue&_pgn=1
Who has good prices and is also very reliable.
And last but not least:if we are talking about a single item I would send you a Z80 free of charge.
Kind regards Paul
Also worldwide shipping is eBay seller
https://www.m.ebay.de/sch/i.html?sid=gc ... rue&_pgn=1
Who has good prices and is also very reliable.
And last but not least:if we are talking about a single item I would send you a Z80 free of charge.
Kind regards Paul
In theory, there is no difference between theory and practice. But, in practice, there is.
-
- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Z80 processor
Thanks Paul.
I need several as I have been borrowing Z80s out of my ZX81s to fix the ones I have refurbished. I have had three dead on arrival zeddies this year and all three had broken Z80s. All the ULAs were fine.
Lardo
I need several as I have been borrowing Z80s out of my ZX81s to fix the ones I have refurbished. I have had three dead on arrival zeddies this year and all three had broken Z80s. All the ULAs were fine.
Lardo
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: 5171
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Z80 processor
Zilog still make the CMOS versions. They are stocked by Farnell and RS.
You will also find Z80 CPUs on eBay. Both new old stock 2.5MHz Z80 NMOS through to “20MHz” “CMOS” ones. Just keep in mind that some are remarked (being marked as a higher speed than what they were originally labelled as, or being NMOS and not CMOS) but despite this, they should be okay for use in Sinclair computers.
Mark
You will also find Z80 CPUs on eBay. Both new old stock 2.5MHz Z80 NMOS through to “20MHz” “CMOS” ones. Just keep in mind that some are remarked (being marked as a higher speed than what they were originally labelled as, or being NMOS and not CMOS) but despite this, they should be okay for use in Sinclair computers.
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
Looking forward to summer being good this year.
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
Looking forward to summer being good this year.
-
- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Z80 processor
Thanks Mark. Would a Spectrum Z80 work ok?
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: Z80 processor
Not necessarily. Spectrums are quite tolerant. But if the spectrum Z80 is fine then yes, it's going to work.
Kind regards Paul
In theory, there is no difference between theory and practice. But, in practice, there is.
- 1024MAK
- Posts: 5171
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Z80 processor
Yeah, the ZX Spectrum (all versions) and the ZX80 / ZX81 / TS1000 / TS1500 etc. all use a Z80 rated at 4MHz (the original Zilog NMOS type number was ‘Z80A’). As far as I know, all of these machines were only ever fitted with 4MHz NMOS Z80 chips.
So yes, a Z80 from a ZX Spectrum should work.
I just want to clarify something I said in my earlier post. The first Z80 CPUs were only rated at 2.5MHz. Officially these are not fast enough to work in Sinclair computers.
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
Looking forward to summer being good this year.
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
Looking forward to summer being good this year.
Re: Z80 processor
Don't forget TS2068. That computer also has its Z80.
-
- Posts: 2191
- Joined: Sat Nov 26, 2016 2:42 am
Re: Z80 processor
I ended up getting a couple from here
https://www.retroleum.co.uk/zx-spectrum-chips
Ideal if you only need one or two - no minimum order value surcharges.
https://www.retroleum.co.uk/zx-spectrum-chips
Ideal if you only need one or two - no minimum order value surcharges.
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