Sinclair ZX80 / ZX81 / Z88 Forums

Just to make sure, I'm going to compare the ROM code of my original A&B to verify the 0-3 order.

Yes, thanks Lardo, I know that there are two but they come as 4x 16k, so just wanting to confirm the correct order that they get burnt onto the chips.

Just to verify before I burn the ROMs.... the Spectrum +2A/+2B/+3 physically have 2x 32k ROM chips, usually referred to as A and B. I know that they consist of 4 banks of 16k ROM data. Am I right in thinking that ROM A contains 16k ROMs 0 and 1 (with 0 starting at the beginning and 1 in the 2nd half...

I did actually buy a 128k RAM pack the other day, awaiting arrival.

We hope to take over the mother-in-law's flat downstairs this year, after she either moves out or dies (whichever comes first - she's been wanting to move in with her new gentleman friend since last year, but keeps coming back to potter around). That'll eventually give me a nice big room that I can ...

I saw that too. But I have to control myself or I will end up with computer systems all over the house that are upgraded to full modern capabilities but still don't get used at all, ever! I snapped up the last Zxpand+ yesterday, I think that probably makes more sense for me at the moment.

Yes, you're a BBC micro man aren't you. The typing experience on them and the overall quality etc is very good, I must say. And the shortcuts with the square or the diamond key combos, quite a nice little system. I've just been looking at replacing the internal ROM, but it seems they are non standar...

It's all quiet on the Z88 front.... I got a Z88 recently in a small lot of computers (I was really only after the ZX80 but the price was good). It's a German model with German ROM (which means it has the German letters on the keyboard but everything software-wise is still in English) and it worked a...

1024MAK wrote: ↑

Sat May 30, 2020 11:08 pm

Take some good quality photos from various angles before you disconnect or remove it.

Mark

Certainly will.

I suppose it won't do any harm to remove the transistor and resistor (or disconnect but leave in place) so that I can at least see if it's fully working. I'll have to see how I feel about the inverted video - I've just got another Lambda as part of a lot and they are 'inverted' from new and it looks...