Was the spectrum 128 ever manufactured by amstrad ?
was there any difference between an investronica 128 and a sinclair 128 ?
is the rom for a investronica 128 available ?
keen to know
spectrum 128 sinclair // amstrad ??
spectrum 128 sinclair // amstrad ??
Zx81-16k exp.- Spectrum 48 - Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo-Velleman interface system-Currah microspeech -Ql - 512k exp.- Ql printer - Cst floppy interf.- Double 3.5 floppy- Minerva - Qimi-and much more .
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Re: spectrum 128 sinclair // amstrad ??
As I understand it, after Amstrad bought the computer business from Sinclair, until the +2 (grey) was ready for sale, Amstrad continued buying the machines from the actual manufacturing company that made the ZX Spectrum 128. Some can be found with parts that have Amstrad part numbers.
Yes. Different PCBs and different ROM code.
I think so...
Mark
ZX81 Variations
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Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer 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 later in the year.
Re: spectrum 128 sinclair // amstrad ??
Hi Mark ,
i found some schematics marked as investronica , and one spanish rom image .
i assume the video output is the same for both versions , but only a real schematic would reveal that i fear.
= pin-out of the rgb connectors differ !!
i will try to make an eprom to see if it does work ......
i found some schematics marked as investronica , and one spanish rom image .
i assume the video output is the same for both versions , but only a real schematic would reveal that i fear.
= pin-out of the rgb connectors differ !!
i will try to make an eprom to see if it does work ......
Zx81-16k exp.- Spectrum 48 - Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo-Velleman interface system-Currah microspeech -Ql - 512k exp.- Ql printer - Cst floppy interf.- Double 3.5 floppy- Minerva - Qimi-and much more .