Can't say I ever seen one before.
VERY VERY LATE EDIT!
Someone has kindly pointed out (privately bless him, I'm in your debt sir) that not only has this been mentioned before but I'm the forgetful Klutz that made the post!!
Rare ZX81 ROM chip?
Rare ZX81 ROM chip?
A very early zeddy for sale on ebay sporting a ROM chip made by American company SS-Solid State Inc. and not the usual NEC,Motorola, SGS or Mostek devices.
Can't say I ever seen one before.
VERY VERY LATE EDIT!
Someone has kindly pointed out (privately bless him, I'm in your debt sir) that not only has this been mentioned before but I'm the forgetful Klutz that made the post!!
Can't say I ever seen one before.
VERY VERY LATE EDIT!
Someone has kindly pointed out (privately bless him, I'm in your debt sir) that not only has this been mentioned before but I'm the forgetful Klutz that made the post!!
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Last edited by Moggy on Fri Mar 17, 2023 11:43 am, edited 1 time in total.
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Lardo Boffin
- Posts: 1965
- Joined: Sat Nov 26, 2016 2:42 am
Re: Rare ZX81 ROM chip?
Bugged ROM as well.
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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1024MAK
- Posts: 4552
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Rare ZX81 ROM chip?
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
We have now entered the Spring system. Standby alert! Summer approaching
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
We have now entered the Spring system. Standby alert! Summer approaching
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb.
Re: Rare ZX81 ROM chip?
Hmmm it may seem that elsewhere is also applicable. Time I bid this forum adieu I think before I become regarded as a bigger joke than I already am. 
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Lardo Boffin
- Posts: 1965
- Joined: Sat Nov 26, 2016 2:42 am
Re: Rare ZX81 ROM chip?
None of us has a perfect memory!
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