This is a photo of the 3 MB Video extension within my CBM Amiga 500 R5 V34 computer. 
See also the file "Few_of_my_own_Hacks".
The video card belongs official to an Amiga 3000. But it works also with an Amiga 500 computer. Even if you have only 0.5 MB of memory.
You have to install it below the Denise.
It works as a turbo-card and it will speed up the multi-tasking.
You have to surf to Amigis if you want such card for your Amiga.
See also URL: http://www.amigis.nl/  And select video....

Until here this readme.

With regards;  Jacqueline.