ebay Amiga 23 to 15-pin Video Adapter

Will it worlk with a A1200 with no 15 khz monitor ?
seller says it will.... can i play games in my A1200 in a standart monitor with this adaptador?


Amiga 23 to 15-pin Video Adapter (new)

This adaptor allows the connection of a 15 pin standard PC monitor (SVGA or Multisync monitors, and also TFT monitors) directly to the Amiga's RGB port.

Note: The adaptor does not perform scandoubling therefore you must select VGA compatible screenmodes or use a monitor which also can handle 15 khz horizontal frequency. If you don't have a such 15 khz monitor, you can use the adaptor only for the Amiga 1200 / 4000 !


http://cgi.ebay.co.uk/Amiga-Video-Ad...QQcmdZViewItem

You will be able to use Workbench with it, provided that you select something like Double PAL higres no filcker, or multiscan productivity. These use 30kHz which most VGA monitors will accept.

The regular PAL modes that games (and other programmes) use, are 15kHz and will only work on a 15kHz monitor, like a 1438 or a 1084 or a television. These will require an additional scandoubler to be used with a normal 30kHz VGA monitor.

hummm, ok, if so, i dont have interest on it.
If it could play 90% of the games it would be good.

That looks identical to the one that comes included with an A4000. It is just a port adaptor to convert the 23 pin Amiga monitor connector to a standard 15 pin VGA one as used by PC monitors.

Most multisync monitors such as the Microvitic 1438 required such an adaptor as they had a captive VGA connector on their cable.

For what you need, you will still need a monitor that is capable of displaying 15Hz modes.

Only a scan doubler/flicker fixer can actually increase the frequency to allow a VGA PC monitor to display the TV resolution 15Hz modes most Amiga games use. And external Amiga scan doublers are very rare and very expensive. The cheapest I've seen one for sale was £80 new from amigakit.com last year.

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And external Amiga scan doublers are very rare and very expensive. The cheapest I've seen one for sale was £80 new from amigakit.com last year.

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That's true, they are both hard to come by and expensive. Guess they are worth it though, if you are going to use the machine a lot.

Forget it....
i will stay playing on tv...
:( to expensive that one

That alternative is to get hold of an Amiga multisync monitor such as the Microvitec 1438 which will display both 15Hz game and 31Hz higher resolution modes so you can play games and using Workbench at a much higher resolution on the same monitor.

You should be able to find an Amiga Multisync monitor quite cheaply on ebay. An Amiga badged version of the same monitor also exists. Plus there are some other Commodore made multisync monitors such as the Commodore 1960.

Yes i can find them.... but send them to Portugal ..... that is a big problem....

I highly recomend the Philips CM8833 MkII (or equivalent), or a Trinitron TV for games.

The 1438 is still good for the 31kHz modes though.

I am yet to make an adaptor to connect the Amiga to my PC monitor. I tried to make one but I didn't do a very good job of making the PCB, so I might just buy one.

Or, I might get a scandoubler if I can afford one.

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Originally Posted by Stephen Coates

The 1438 is still good for the 31kHz modes though.

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Eh? I noticed your bolding there.... 31kHz? 31,000 cycles per second :blink:

What's that all about then? As far as I know, CRTs cannot refresh at such crazy high rates. Unless we've gotten mixed up somehow, I think you might be a little mistaken with your units there buddy.

Horizonal frequency, (like 15 for PAl and 30 for VGA) is measured in kHz

Vertical frequency (like 60 for a flickery picture and 100 for a non flickery picture) is measured in Hz.

These pages explain it in some detail:
http://en.wikipedia.org/wiki/Refresh_rate
http://en.wikipedia.org/wiki/Horizontal_scan_rate

Although you might want to read other pages as well for more information, due to the strange use of the word 'shuzam' in the Refresh Rate article. :D

And to verify that horizontal refresh rate is measured in kHz, my monitor's OSD states the horizonal rates it can do in kHz and the vertical rates it can do in Hz.

Aha! I get it. You learn something new every day. You know, it never even occurred to me, but thinking about it properly it does make sense. Is it in any way related to the v-sync and H-sync nobs that you sometimes see on old screens - or is that something different again?