PhilCs blog / the latest things hes broken(fixed)

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exxos
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Re: FMNs blog / the latest things hes briken(fixed)

Post by exxos » Thu Jun 27, 2019 9:15 pm

PhilC wrote:
Thu Jun 27, 2019 9:12 pm
I think I'd need to download 3 million windows 3.1 installation disks on 360k floppy first though right?
Thought there was a DOS version ? Or maybe it was in Qbasic...
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Re: FMNs blog / the latest things hes briken(fixed)

Post by PhilC » Thu Jun 27, 2019 9:17 pm

I'm going to dig out a copy of commander keene over the weekend.

It'd be pretty easy to make a modern version of this board now, 1 NEC V30, a CPLD and a few caps and diodes.
If it ain't broke, test it to Destruction.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by PhilC » Thu Aug 01, 2019 8:33 pm

Bit quiet on my blog lately thanks to real life getting in the way.

Thanks to exxos, been working on his VGA adaptor today. I did have two of the UBESwitch ones before and although they have more features I found them a little too fragile. I'd managed to break off the button on both and the headphone socket on another.

Granted, I was plugging it in and out quite frequently, so this didnt help.

Exxos has designed an adaptor that uses some through hole components and a simple jumper for mono / colour selection. This will make for a simpler, cheaper and more robust VGA adaptor.

Here's the nearly finished article, minus the headphone socket as I need to desolder one from an old radio on the shelf behind me.
20190801_193004.jpg
20190801_193004.jpg (113.64 KiB) Viewed 747 times
The other difference between the UBE version and this one is that exxos has done away with the 3 RGB adjustment pots, which were a bit of a pain to get right. Instead exxos has used 3 voltage dividers to control the monitor brightness, ghosting, etc.

My job today has been to try a few different variations for the voltage dividers and hopefully we are somewhere near now.

Have a look below, not too shabby on my old NEC if I do say so myself.
20190801_193054.jpg
20190801_193054.jpg (239.79 KiB) Viewed 747 times
If it ain't broke, test it to Destruction.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by exxos » Thu Aug 01, 2019 8:40 pm

:bravo: :coolpics:

Yeah the pots (now resistors) were set as high of brightness as I could get them before I got odd colour bleeding/ghosting issues. It was to much of a pain to adjust them anyway.
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by derkom » Thu Aug 01, 2019 8:41 pm

Looking very nice indeed! :dualthumbup:

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Re: FMNs blog / the latest things hes briken(fixed)

Post by PaulJ » Thu Aug 01, 2019 11:00 pm

New design looks good. The old one hide the floppy connector when it was used with a mega. Nice design!! :) :) :)

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Re: FMNs blog / the latest things hes briken(fixed)

Post by exxos » Fri Aug 02, 2019 10:07 pm

:bravo:


If I could actually find the bag of audio connectors I would send you one!
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by PhilC » Fri Aug 02, 2019 10:47 pm

exxos wrote:
Fri Aug 02, 2019 10:07 pm
:bravo:


If I could actually find the bag of audio connectors I would send you one!
Cool, thanks. Do you have a plan for a case yet? Btw, angled headers seem to work pretty well for the mono / colour jumper but might find a toggle switch that fits too.
If it ain't broke, test it to Destruction.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by exxos » Fri Aug 02, 2019 10:50 pm

PhilC wrote:
Fri Aug 02, 2019 10:47 pm
Cool, thanks. Do you have a plan for a case yet? Btw, angled headers seem to work pretty well for the mono / colour jumper but might find a toggle switch that fits too.
No plans to do a case. Not even finished the RTC case yet :)
4MB STFM 1.44 FD- VELOCE+ 020 STE - 4MB STE 32MHz - STFM 16MHz - STM - MEGA ST - Falcon 030 CT60 - Atari 2600 - Atari 7800 - Gigafile - SD Floppy Emulator - PeST - HxC - CosmosEx - Ultrasatan - various clutter

https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/last/storenew/ - All my hardware mods for sale - Please help support by making a purchase.

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Re: FMNs blog / the latest things hes briken(fixed)

Post by PhilC » Fri Aug 02, 2019 10:51 pm

Ok, might add it to my list. Pink to match your monitor?
If it ain't broke, test it to Destruction.

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