Page 1 of 1
spectrum 128 sinclair // amstrad ??
Posted: Thu Jan 18, 2024 4:50 pm
by jojo
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
Re: spectrum 128 sinclair // amstrad ??
Posted: Thu Jan 18, 2024 6:21 pm
by 1024MAK
jojo wrote: ↑Thu Jan 18, 2024 4:50 pm
Was the spectrum 128 ever manufactured by 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.
jojo wrote: ↑Thu Jan 18, 2024 4:50 pm
was there any difference between an investronica 128 and a sinclair 128 ?
Yes. Different PCBs and different ROM code.
jojo wrote: ↑Thu Jan 18, 2024 4:50 pm
is the rom for a investronica 128 available ?
I think so...
Mark
Re: spectrum 128 sinclair // amstrad ??
Posted: Thu Jan 18, 2024 8:39 pm
by jojo
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 ......