Search found 18 matches

by alexh
Wed Jul 08, 2020 7:03 am
Forum: 8 BIT CORNER
Topic: Amstrad CPC 6128 Plus Display Issues
Replies: 5
Views: 93

Re: Amstrad CPC 6128 Plus Display Issues

My passive cable worked fine with my Phillips CM8833 but had ghosting and sync issues with my Panasonic Plasma. I bought an active cable and it was fixed. To be fair the cable is a different length so the ghosting might be the cable length. Or it might have been wired with more grounds than the pass...
by alexh
Wed Jul 08, 2020 6:49 am
Forum: 8 BIT CORNER
Topic: Amstrad CPC 6128 Plus Display Issues
Replies: 5
Views: 93

Re: Amstrad CPC 6128 Plus Display Issues

https://coolnovelties.co.uk/coolnovelties/amstrad-video-cables/258-amstrad-cpc-464-6128-active-rgb-scart-cable.html The problem is there is no power voltage pin on the CPC 6128 plus video port. Just RGBS and most passive cables make the RGB Blanking voltage using a capacitor. Replacing this with a b...
by alexh
Tue Jul 07, 2020 11:58 pm
Forum: 8 BIT CORNER
Topic: Amstrad CPC 6128 Plus Display Issues
Replies: 5
Views: 93

Re: Amstrad CPC 6128 Plus Display Issues

I had to drive the RGB Blanking signal from a separate 5v power supply to make mine work well. Sometimes described in CPC circles as an active SCART cable

https://www.ebay.co.uk/itm/251970455548
by alexh
Tue Jul 07, 2020 7:34 pm
Forum: CHAT FORUM
Topic: Describe Your lock down for one week using a single black and white image..
Replies: 12
Views: 560

Re: Describe Your lock down for one week using a single black and white image..

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by alexh
Tue Jul 07, 2020 3:23 pm
Forum: INTRODUCE YOURSELF
Topic: Yo dudes
Replies: 9
Views: 169

Re: Yo dudes

It depends what you mean by spammer ;-)
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by alexh
Tue Jul 07, 2020 2:24 pm
Forum: INTRODUCE YOURSELF
Topic: Yo dudes
Replies: 9
Views: 169

Re: Yo dudes

I only just started posting, your first posts are moderated so I thought that an introduction was required
by alexh
Tue Jul 07, 2020 11:52 am
Forum: ELECTRONICS
Topic: Google SkyWater IC-manufacturing project
Replies: 7
Views: 147

Re: Google SkyWater IC-manufacturing project

The catch is the design must be open source. But that doesn't stop a TG68k variant. Get started!
by alexh
Tue Jul 07, 2020 10:47 am
Forum: ELECTRONICS
Topic: Google SkyWater IC-manufacturing project
Replies: 7
Views: 147

Re: Google SkyWater IC-manufacturing project

Interesting. Apollo team should definitely get in there if this is true.
by alexh
Tue Jul 07, 2020 10:40 am
Forum: INTRODUCE YOURSELF
Topic: Yo dudes
Replies: 9
Views: 169

Yo dudes

Hi, My name is Alex and I am a hardware retroholic. (And a stealth member of the board for years) Ok now that is over, my first computer was an Acorn electron in 1982, I was very disappointed at first because I wanted a Sinclair Spectrum 48k. Over the years my main computer chronology was : Spectrum...
by alexh
Tue Jul 07, 2020 10:04 am
Forum: TF360
Topic: 68060 sources
Replies: 53
Views: 5578

Re: 68060 sources

With modern FPGAs [snip] we get clock frequency for free. So you don't need complexity to get performance, we just brute force it with clocks I don't think this is true. These designs are running at similar clock speeds (40MHz) but have better performance. The speed achieved not so much by raw cloc...

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