Buffered VGA Adaptors for the Amiga 4000

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dandelion wrote:
Hi all..

I have noticed there are two types of VGA Adaptor, buffered and unbuffered. The official Commodore silver adaptors were buffered, whereas I believe other developers sold unbuffered devices - simply connecting the necessary pins together.

When reading the Eyetech website they sell such an unbuffered device - and they state - "Not A4000". I believe I have a similar unbuffered adaptor which works fine with my a1200 and PC monitor but my a4000 just doesn't want to play ball. So, before I flash out on an official one, is this the cause of my woes? Or was the extra buffering due to problems with VideoToasters and other add-ons?

Anyone know for certain?

Thanks in advance

A buffered Analogue signal?

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dandelion wrote:

A buffered analogue signal? Um..not sure what you mean. There exists to VGA Adaptor types for linking AA amigas to SVGA monitors, one buffered and one not. Not sure whether they are analogue or why that's important. Sorry :/

The only difference between the Amiga's video plug and a VGA plug are the position of the pins... I'm not sure what there is to buffer...

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dandelion wrote:
no - i'm not sure either. But there must have been a reason for Commodore to create one and for Eyetech to advertise their own adaptors as "not a4000".

Very strange... Check out here

Commodore VGA

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Framiga wrote:
@Bloodline

no those active adatptor doesn't buffer the RGB analogic signal, but adapt (trough an inverter/buffer IC) the H-V signals.

Ciao

 

I see, that makes sense :-)