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Photos Latest Purchases Thread: v2.0

Discussion in 'General' started by RTT, 29 Oct 2007.

  1. Byron C

    Byron C Multimodder

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    I don't have any monitors that accept a 15Khz sync signal, so I need something to take a 15Khz RGB video signal and turn it into something that a VGA monitor can understand :grin:.

    The aim is to turn this into a 'universal' SCART-to-VGA adapter/upscaler: plug in any retro system using a 15Khz RGB SCART connection (note: the RGB part is important, composite-only-over-SCART won't work) and get 31Khz VGA out the other end. I want to carry on using a CRT monitor, otherwise I'd have got something that spits out a digital signal, like the OSSC, and used an LCD. Apparently the replacement firmware for the GBS-8200 can 'pass-through' the original source resolution, which will be just freaking ace if it works - I know for a fact that my CRT supports resolutions as low as 320x200 because I've used that video mode on this monitor in the dim and distant past. Native 240p RGB from a retro system on a CRT display :rock:

    That is an excellent use of both your time and your money :thumb: :grin:.
     
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  2. jinq-sea

    jinq-sea 'write that down in your copy book' Super Moderator

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    Trinitron won't do 15kHz then? :(
     
  3. Byron C

    Byron C Multimodder

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    Doesn't seem to :(. I get an 'OUT OF RANGE' message when I try to use low or medium resolutions on my Atari STe via VGA... Bit of a kick in the nards though, that ST-to-VGA adapter was nearly £30 and it'll be kinda useless before long!

    TBH I have other retro systems I'd want to use this monitor with, so I think it's better in the long run to build a dedicated universal box. RGB via SCART is extremely common for PAL consoles/systems, and those that don't have it (<glares at Nintendo>) can be modded to support it. If I can feed SCART RGB in at one end and get VGA out the other and use the Sony CRT then I'm still happy :grin:. TBH it doesn't even have to be RGB via SCART - as long as the system in question uses separate RGB signals and can generate a composite sync signal then I can make it work.
     
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  4. jinq-sea

    jinq-sea 'write that down in your copy book' Super Moderator

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    If you need any help with this sort of stuff, @Byron C, just shout. I do a lot of it. I modified my NTSC N64 to output PAL, too - it was dead easy if a bit small to solder.

    Pretty much everything console-wise from the Genesis/Super Famicom will do 15kHz RGB so your adapter box will see you right. You can mod the NES, but it's a right PITA. Gamecube and Wii are all RGB capable out-of-the box. Anyway - shout if you want some help.

    I'm not that surprised the Trinitron won't do 15kHz - most monitors of that vintage don't (and won't do 24kHz either) - you'd need a tri-sync display like wot you might use with a Sharp X68000 to get down that low. Or an arcade tri-sync, which is what I use. To be honest, I just do most things via my PVM at 15kHz, but I would very much like a scandoubler for my A1200. Whilst it's great at 15kHz I would like a bit more resolution without the flicker...
     
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  5. Byron C

    Byron C Multimodder

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    Willdo, ta :thumb:.

    PVM - well jel :grin:. I ended up tossing away the BeoVision CRT TV I had; it had a dead flyback transformer and I couldn't find any replacements or a local company willing to repair it. The thing was massive anyway, it took up loads of room - the 210ES at least fits on my desk!

    The only systems I have right now are Atari STe, MegaDrive, Wii, PlayStation, and PS2 - all SCART-RGB capable. I am toying with the idea of getting an Amiga of some description - I'd like a 1200 ideally so I can get access to AGA graphics and better upgrade options, but they're getting a bit expensive these days. In any case, all classic Amigas can do RGB with csync via the monitor port.
     
  6. Dr. Coin

    Dr. Coin Multimodder

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    Help a friend a few years back replace the burnout CGA tube in an arcade with an LCD using that or a very similar board. Worked great but the OSD was in Chinese and we weren't able to make any adjustments.
     
  7. jinq-sea

    jinq-sea 'write that down in your copy book' Super Moderator

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    The PVM was a good get - it was cleared out from a hospital. I'm scared of the day the flyback dies. I've had it a good long while now - PVMs and BVMs have become silly money though sadly. I actually snagged an ex-broadcast 9" BVM fairly recently too direct from a broadcast company clearout, and it's complete in the flight case. It's destined for my bench as an arcade PCB repair monitor :) It also does YPbBr which is nice.

    Anyway, I digress. Those Gonbes scalers are pretty decent, and lots of folk I know use them to get 15kHz on an RGB monitor for testing etc. I'm curious about the replacement controller - I'll have a nose.

    Also, a 1200 is a winner. Mine has recently had an CF upgrade, AmigaOS 3.1.4, and I found my 68030 accelerator too. Awesome. It's overkill for Lemmings, but it's awesome for Worms Director's Cut! :)

    I'm allergic to LCDs in classic arcade cabs ;)
     
  8. MLyons

    MLyons 70% Dev, 30% Doge. DevDoge. Software Dev @ Corsair Lover of bit-tech Administrator Super Moderator Moderator

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    An IPS game boy colour. Link? Think I have a new mod on my hands
     
  9. liratheal

    liratheal Sharing is Caring

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  10. jinq-sea

    jinq-sea 'write that down in your copy book' Super Moderator

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    The McWill screens they carry are top notch. There's an Atari Lynx one now, too.
     
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  11. Byron C

    Byron C Multimodder

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    This little mod entirely replaces the on-board MCU with an external microcontroller running alternate firmware: https://github.com/ramapcsx2/gbs-control/. Basically... jumper the 're-flash' pins closed on the GBS-8200 and hook up a cheap Wemos D1 or NodeMCU ESP8266 microcontroller board to the serial pins. Lots

    They're getting very expensive these days...! I might be able to get away with an A500 in need of repair for around £100, but you can expect to pay anywhere between £200 and £500 for an A1200 in any condition...
     
    Last edited: 6 May 2020
  12. perplekks45

    perplekks45 LIKE AN ANIMAL!

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    Since DHL screwed up and my chairs got stuck in Brussels... Waiting for your review.
     
  13. liratheal

    liratheal Sharing is Caring

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    I would have gone for a mcwill - I have a mcwill usb doodad ordered, but to get one to Germany was almost as much as the unit itself from most places. That said, I did see a few video reviews of the ips screens and oh my. Tetris looked the bomb.
     
  14. bawjaws

    bawjaws Multimodder

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    Bloody hell. Almost tempting to sell mine at those sort of mad prices.
     
  15. Dr. Coin

    Dr. Coin Multimodder

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    His wife wasn't happy with the arcade purchase, he wasn't allowed to spend much to fix the unit and he happened to have a spare LCD that was the right size. Appeased the wife as the unplayable machine became functional.

    @Byron C, in post 4786273 your third quote is assigned to me but should be assigned to jinq-sea.
     
  16. Byron C

    Byron C Multimodder

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    Copypaste cockup :thumb:
     
  17. DeadP1xels

    DeadP1xels Social distancing since 92

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    Getting the home office a bit more office like, replacing my Oak dining room chair with a proper office chair and some lockable storage to stop small children getting things they're not allowed to!

    [​IMG] [​IMG]
     
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  18. yuusou

    yuusou Multimodder

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    Collecting parts for my first ever mod.
    [​IMG]
    [​IMG]
     
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  19. Byron C

    Byron C Multimodder

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    Nice! What you doing to it?
     
  20. yuusou

    yuusou Multimodder

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    Deskmini A300, something between 1050 and 1650 super (75W to 100W) on an m.2 to pcie riser, and if I can cram it in there, a laptop BD-ROM on top.
     
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