using Amiga monitor with a PC

boing_1000 · 09 December 2006, 21:26

Hi is it possible to have the Amiga monitor display signals from a PC via the RGB cables? Is there an adapter on amigakit?

dambuster · 09 December 2006, 21:51

If youre using A1200/A4000 ie AGA then by using DBL PAL/NTSC or VGA drivers in the Monitors draw plus this from amigakit.
http://amigakit.leamancomputing.com/...0cada76ca9725b
hope this helps

Jope · 09 December 2006, 22:13

You must create a custom display mode for your PC that has low enough refresh frequencies..

60Hz for vertical, 15,5kHz for horizontal. If you use windows, you can do this using Powerstrip or if you have an nVidia card, I hear that the support software has a tool for building those custom resolutions. For Linux it's just a simple matter of typing in a suitable modeline in your x server config.

The adapter is simple enough, www.hardwarebook.net has the pinouts you'll need.

Bios messages will not be visible, only once your OS's graphical interface has been loaded can you see anything on the Amiga monitor. You probably shouldn't even keep it switched on during the time that the computer is outputting a 31kHz signal - it might break the monitor.

I'm curious as to why you'd like to do this?

There is a site somewhere that has 15kHz bioses for some old graphics cards.. People used to build Mame cabinets like this.

SilentBob · 09 December 2006, 22:47

It's probably possible, as you can easily display PC graphics on a television set if your graphics card has the right output connectors.

srg86 · 09 December 2006, 23:24

Quote:

Originally Posted by boing_1000

Hi is it possible to have the Amiga monitor display signals from a PC via the RGB cables? Is there an adapter on amigakit?

If your Amiga monitor has a comporsite input you can use the any graphics card with TV out. I'm not sure about nvidia cards but I know that ATI cards TV out also works at BIOS level (BTW That is tricky but possible also with Matrox G400 as well).

Jope · 10 December 2006, 07:27

Let's keep at the problem at hand: RGB with TV frequencies from a PC adapter..

Some googling around:
http://www.ultimarc.com/avgainf.html (no DIY needed)

Here's some de luxe vga to tv circuits, I recommend these over a direct pin to pin connection, as the signal types are a bit different between VGA and TV.
http://www.tkk.fi/Misc/Electronics/circuits/vga2tv/
http://www.tkk.fi/Misc/Electronics/c...tv/cindex.html

09 December 2006, 21:26	#1
boing_1000 A1000 Addict Join Date: Jan 2006 Location: Eastern USA Age: 37 Posts: 567	using Amiga monitor with a PC Hi is it possible to have the Amiga monitor display signals from a PC via the RGB cables? Is there an adapter on amigakit?

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09 December 2006, 21:51	#2
dambuster Zone Friend Join Date: Nov 2006 Location: Dundee / Scotland Posts: 151	If youre using A1200/A4000 ie AGA then by using DBL PAL/NTSC or VGA drivers in the Monitors draw plus this from amigakit. http://amigakit.leamancomputing.com/...0cada76ca9725b hope this helps

09 December 2006, 22:13	#3
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	You must create a custom display mode for your PC that has low enough refresh frequencies.. 60Hz for vertical, 15,5kHz for horizontal. If you use windows, you can do this using Powerstrip or if you have an nVidia card, I hear that the support software has a tool for building those custom resolutions. For Linux it's just a simple matter of typing in a suitable modeline in your x server config. The adapter is simple enough, www.hardwarebook.net has the pinouts you'll need. Bios messages will not be visible, only once your OS's graphical interface has been loaded can you see anything on the Amiga monitor. You probably shouldn't even keep it switched on during the time that the computer is outputting a 31kHz signal - it might break the monitor. I'm curious as to why you'd like to do this? There is a site somewhere that has 15kHz bioses for some old graphics cards.. People used to build Mame cabinets like this.

09 December 2006, 22:47	#4
SilentBob Junior Member Join Date: Nov 2003 Location: Norway Age: 49 Posts: 246	It's probably possible, as you can easily display PC graphics on a television set if your graphics card has the right output connectors.

10 December 2006, 07:27	#6
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,861	Let's keep at the problem at hand: RGB with TV frequencies from a PC adapter.. Some googling around: http://www.ultimarc.com/avgainf.html (no DIY needed) Here's some de luxe vga to tv circuits, I recommend these over a direct pin to pin connection, as the signal types are a bit different between VGA and TV. http://www.tkk.fi/Misc/Electronics/circuits/vga2tv/ http://www.tkk.fi/Misc/Electronics/c...tv/cindex.html

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