Search found 154 matches

by Erm
Tue Jun 23, 2020 12:02 pm
Forum: ZX Spectrum Lounge
Topic: +2A ROMs 0 - 3 on 2x Eprom
Replies: 5
Views: 1220

Re: +2A ROMs 0 - 3 on 2x Eprom

Just to make sure, I'm going to compare the ROM code of my original A&B to verify the 0-3 order.
by Erm
Mon Jun 22, 2020 11:48 pm
Forum: ZX Spectrum Lounge
Topic: +2A ROMs 0 - 3 on 2x Eprom
Replies: 5
Views: 1220

Re: +2A ROMs 0 - 3 on 2x Eprom

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.
by Erm
Mon Jun 22, 2020 5:22 pm
Forum: ZX Spectrum Lounge
Topic: +2A ROMs 0 - 3 on 2x Eprom
Replies: 5
Views: 1220

+2A ROMs 0 - 3 on 2x Eprom

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...
by Erm
Sun Jun 14, 2020 11:59 am
Forum: Z88
Topic: Just got one.
Replies: 10
Views: 1920

Re: Just got one.

I did actually buy a 128k RAM pack the other day, awaiting arrival.
by Erm
Wed Jun 03, 2020 6:19 pm
Forum: Z88
Topic: Just got one.
Replies: 10
Views: 1920

Re: Just got one.

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 ...
by Erm
Wed Jun 03, 2020 12:24 pm
Forum: Z88
Topic: Just got one.
Replies: 10
Views: 1920

Re: Just got one.

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.
by Erm
Tue Jun 02, 2020 8:41 pm
Forum: Z88
Topic: Just got one.
Replies: 10
Views: 1920

Re: Just got one.

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...
by Erm
Tue Jun 02, 2020 7:33 pm
Forum: Z88
Topic: Just got one.
Replies: 10
Views: 1920

Just got one.

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...
by Erm
Sat May 30, 2020 11:29 pm
Forum: Hardware
Topic: ZX80 Jumper A - B or A - C, purpose?
Replies: 6
Views: 560

Re: ZX80 Jumper A - B or A - C, purpose?

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.
by Erm
Sat May 30, 2020 10:14 pm
Forum: Hardware
Topic: ZX80 Jumper A - B or A - C, purpose?
Replies: 6
Views: 560

Re: ZX80 Jumper A - B or A - C, purpose?

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...