Search found 68 matches

by britain4
Sun Dec 18, 2016 1:41 pm
Forum: Hardware
Topic: Pictures of my ZX81 fitted with a RECOM 5V Regulator
Replies: 23
Views: 4579

Re: Pictures of my ZX81 fitted with a RECOM 5V Regulator

Looks very neat and tidy, I might add those caps next time I open my ZX81 up!
by britain4
Sun Dec 18, 2016 1:40 pm
Forum: Hardware
Topic: ZX8-CCB vs ZXVid
Replies: 80
Views: 10151

Re: ZX8-CCB vs ZXVid

I'd advise patience on eBay. I picked up 5 "untested" ones from there for £40 lately and aside from having to trim down a couple of membrane tails they all work perfectly!

All but one of mine have socketed ULAs (the exception being the issue 3)
by britain4
Tue Dec 13, 2016 10:40 pm
Forum: Hardware
Topic: 8MHz Z80 on Sell My Retro
Replies: 21
Views: 2550

Re: 8MHz Z80 on Sell My Retro

Regulated 7.5v definitely makes a huge difference on my ZX80 compared to my Sinclair PSUs. Hard to say how much cooler the switching regulator in my ZX81 is. Maybe worth trying that as a first step towards a cool running system? I agree with Mark, having fitted switching regs to my ZX80 and 81's I ...
by britain4
Tue Dec 13, 2016 5:42 pm
Forum: Hardware
Topic: 8MHz Z80 on Sell My Retro
Replies: 21
Views: 2550

Re: 8MHz Z80 on Sell My Retro

Regulated 7.5v definitely makes a huge difference on my ZX80 compared to my Sinclair PSUs. Hard to say how much cooler the switching regulator in my ZX81 is. Maybe worth trying that as a first step towards a cool running system?
by britain4
Wed Dec 07, 2016 6:21 pm
Forum: Hardware
Topic: ZX8-CCB vs ZXVid
Replies: 80
Views: 10151

Re: ZX8-CCB vs ZXVid

I've fitted quite a few CCBs and they are great, including one to a ZX80. Brilliant things and it's possible to go (almost) totally solderless on the install if you are so inclined - I didn't want to modify my ZX80 I wrapped the 5v and video in wires around the existing ones going into the modulator...
by britain4
Mon Nov 28, 2016 9:52 am
Forum: Hardware
Topic: ZX8-CCB vs ZXVid
Replies: 80
Views: 10151

Re: ZX8-CCB vs ZXVid

I use this from Maplin's http://www.maplin.co.uk/p/60w-mains-lcd-solder-station-a55kj?cmpid=ppc&gclid=CjwKEAiAyO_BBRDOgM-K8MGWpmYSJACePQ9CPihUPL7HHS2Ffqe9RmH0hToAWSTROsipFBJb5c6CHBoCVfTw_wcB It's brilliant and you can use it with Hakko tips which are only a few quid for a pack of 10 on eBay. (Which ...
by britain4
Sun Nov 20, 2016 1:16 pm
Forum: Hardware
Topic: ZX80 Oddity with Replacement ROM
Replies: 55
Views: 6178

Re: ZX80 Oddity with Replacement ROM

sirmorris wrote:Glad to be of service :D
Indeed! I'll get the non-working ROM posted back to you this week (Rich has sent me the postal address)
by britain4
Sun Nov 20, 2016 12:42 am
Forum: Hardware
Topic: ZX80 Oddity with Replacement ROM
Replies: 55
Views: 6178

Re: ZX80 Oddity with Replacement ROM

There is a Dutch site that has "1000's" of files on offer(the URL escapes me for now), along with a few nasty little Trojans as well! I think I've found the site you mean, it's a very nice resource but due to the aforementioned Trojans I'm reluctant to post a link! Rich sent me both the non-working...
by britain4
Mon Nov 14, 2016 10:51 pm
Forum: Hardware
Topic: Hi-res issues with ZXpand
Replies: 16
Views: 1925

Re: Hi-res issues with ZXpand

Great news :D Just as a qualification of my question about the internal 16k expansion I'd like to say that if an internal RAM expansion doesn't disable itself when the ZXpand is connected then you'll have two RAM chips driving the bus. If the CS pin of your expansion uses the existing CS signal the...
by britain4
Sun Nov 13, 2016 7:32 pm
Forum: Hardware
Topic: Hi-res issues with ZXpand
Replies: 16
Views: 1925

Re: Hi-res issues with ZXpand

YUP LOAD"25ANNI";X Which loads file then disables the EPROM. A reset is needed to restore but I don't think that's the problem here. Cheers. That has actually worked! Yay! I've just read it in the manual today so an important lesson here - RTFM! This isn't something that bothers me as long as it's ...