Search found 148 matches

by -B-
Sat Dec 14, 2019 2:34 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Excellent stuff!
by -B-
Mon Dec 02, 2019 6:24 pm
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

Excellent work =D> again!
by -B-
Fri Nov 29, 2019 11:35 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

IanB wrote:
Fri Nov 29, 2019 11:12 pm
Do you know what pixel clock frequency the QL uses? (It seems to be 10Mhz from online info)
Also how many clock cycles are there in a video line? (This should be around 640 but may vary 1 or 2 either way)
This might help...
ZX8301.pdf
(376.68 KiB) Downloaded 12 times

Neil.
by -B-
Fri Nov 29, 2019 7:10 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

I have a couple but I’m not in the UK.
I will be for Christmas though, so if you’d like me to lend you one....

Neil.
by -B-
Fri Nov 29, 2019 11:47 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Have you tried the QL yet, with its famous overscan in monitor mode?
by -B-
Wed Nov 27, 2019 5:09 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Excellent work =D>
by -B-
Wed Nov 20, 2019 12:12 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Amazing!!! =D>
by -B-
Mon Nov 11, 2019 9:44 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

That's very neat, I assume it works OK? (I was concerned that the extra heat inside the PI case might make the threshold adjustments a bit unstable.) It's not actually finished, I got to the stage where I needed to programme the CPLD but my Xilinx platform is not recognised by my laptop. I will hav...
by -B-
Thu Nov 07, 2019 8:14 am
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Ah, you beat me to it. I am using your ZX81 circuit with the old version of the board...

C68870FE-F204-4B94-BD40-EFF99C47AB52.jpeg
Neil.
by -B-
Wed Nov 06, 2019 6:48 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Excellent! I like the look of that. Especially since my Xilinx programmer doesn’t work any more.
by -B-
Fri Oct 18, 2019 9:46 pm
Forum: hardware
Topic: RGB to HDMI using a Pi Zero and a small CPLD
Replies: 818
Views: 46906

Re: RGB to HDMI using a Pi Zero and a small CPLD

Nice work =D>
by -B-
Tue Oct 08, 2019 7:27 am
Forum: hardware
Topic: Proposed: "The Ultimate Electron Upgrade"
Replies: 520
Views: 36988

Re: Proposed: "The Ultimate Electron Upgrade"

I'm also interested, I have a bog standard Elk waiting.

Neil
by -B-
Fri Sep 27, 2019 9:03 am
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

I use a Philips screwdriver for the 3mm holes and one of these for the 4mm and deburring. By hand, not with a drill.

89ACABCB-1898-4141-BD02-7599530C2C94.jpeg
by -B-
Thu Sep 26, 2019 8:52 pm
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

Here’s some quick measurements of my box.

7364B32C-1F71-4AAD-97BD-9D24CC30A46F.jpeg
D36183E0-329D-4BB4-819A-0E1E04C73CA5.jpeg
by -B-
Thu Sep 26, 2019 8:02 am
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

.... or someone could measure their box when they get home from work tonight and post the results here?
(I am volunteering).

Neil.
by -B-
Wed Sep 25, 2019 3:08 pm
Forum: acorn atom and system
Topic: A slightly dog-eared Atom
Replies: 30
Views: 1103

Re: A slightly dog-eared Atom

Good work fella!
by -B-
Fri Sep 06, 2019 8:58 pm
Forum: acorn atom and system
Topic: AtomSID
Replies: 36
Views: 3047

Re: AtomSID

Nice work fella
by -B-
Thu Sep 05, 2019 10:37 am
Forum: introduce yourself
Topic: 10 PRINT "Hello Stardot"
Replies: 17
Views: 571

Re: 10 PRINT "Hello Stardot"

Well hello, fancy seeing you here!
by -B-
Fri Aug 16, 2019 2:03 pm
Forum: software: new games
Topic: Electron AGD
Replies: 7
Views: 865

Re: Electron AGD

Excellent news. I look forward to some AGD releases for the Elk.

Neil.
by -B-
Wed Aug 14, 2019 7:03 pm
Forum: acorn atom and system
Topic: AtomSID
Replies: 36
Views: 3047

Re: AtomSID

oss003 wrote:
Wed Aug 14, 2019 6:47 pm
This Rob Hubbard SID file is the ultimate SID tune ...... download/file.php?id=8067
That is amazing. I wish I had used that on my video!
by -B-
Wed Aug 14, 2019 5:44 pm
Forum: acorn atom and system
Topic: AtomSID
Replies: 36
Views: 3047

Re: AtomSID

I finally got around to finishing the AtomSID board that Kees gave me at the Dutch Atomic Techsat in June. I have modified it slightly. I am usung a SwinSID so it runs off 5v making the step-up voltage area of the board redundant, so I cut it off, removed some tracks, made some links, moved some com...
by -B-
Fri Aug 09, 2019 9:04 pm
Forum: acorn atom and system
Topic: Disc Pack and Micro Gotek problems
Replies: 5
Views: 418

Re: Disc Pack and Micro Gotek problems

Thanks but I already checked the wiring of the encoder and the switch is working. So I’m thinking it’s either the card setup or actually something wrong with the micro Gotek itself. I was surprised when it turned up in a Jiffy bag. I could try it on a different system and try and rule out the card o...
by -B-
Fri Aug 09, 2019 11:43 am
Forum: acorn atom and system
Topic: Disc Pack and Micro Gotek problems
Replies: 5
Views: 418

Re: Disc Pack and Micro Gotek problems

The little PCB that the encoder sits on is simply for linking the encoder's pins to a 4 pin header. If that helps.
by -B-
Fri Aug 09, 2019 11:29 am
Forum: acorn atom and system
Topic: Disc Pack and Micro Gotek problems
Replies: 5
Views: 418

Disc Pack and Micro Gotek problems

Hi All, I have bought a Micro Gotek by Zaxon from SellMyRetro: https://www.sellmyretro.com/offer/details/micro-gotek-32413 I have dropped a few of Kees' .dsk files on it from the AGD packs for testing but I am not having much luck with it. The connection and jumper details are here http://www.eightb...
by -B-
Fri Aug 02, 2019 11:00 am
Forum: introduce yourself
Topic: Hello Acorn fans!
Replies: 14
Views: 574

Re: Hello Acorn fans!

Welcome! This is a fantastic forum for info and help.

Your story of abandoning modern gaming and collecting classic 8-bit systems will sound familiar to many here. Although some, like me, may not have tried modern gaming at all. I'm more into the hardware side of things anyway.
by -B-
Wed Jul 03, 2019 11:07 pm
Forum: acorn atom and system
Topic: AtomSID
Replies: 36
Views: 3047

Re: AtomSID

anightin wrote:
Mon Jul 01, 2019 4:20 pm
@Neil did you manage to source a board?
I received one of Kees’ PCBs while at the Dutch Atomic Techsat a few weeks ago.
I’ve almost finished it but I’m on holiday at the moment so everything is on hold and no retro computing of any kind is getting done.

Neil
by -B-
Tue Jun 25, 2019 4:10 pm
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

I paid 33cents each for mine from Reichelt and it was pot luck whether I received, ST, Philips, Fairchild or Samsung.

I received Fairchilds both times and they work fine.

Neil.
by -B-
Mon Jun 24, 2019 8:16 am
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

It is the one I got and the pcb fits. You need to cut two bits of plastic inside but I think the original one needs that as well. Including the five mounting points, I might add. So it seems to be identical. And I got it from earlier in the thread, so someone already mentioned it there. Excellent! ...
by -B-
Sun Jun 23, 2019 6:13 pm
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

That looks very close. If anyone goes for that, please show us the end result.

Neil.
by -B-
Sun Jun 23, 2019 12:01 pm
Forum: acorn atom and system
Topic: Atom Video to HDMI Adapter
Replies: 236
Views: 10879

Re: Atom Video to HDMI Adapter

Tried to order the case but the companies I found thus far charge 15...20 GBP for shipping to NL. Thats 3..4 times the costs of the box. So will look for a "Continental replacement". I saw the same so I ordered from eBay and paid about 2-3 times the value including postage. Not ideal but better tha...