The maximum ram it will take is 8mb and thats with just two out of four slots filled, it requires two 4mx8 simms to utilise the full 8megs I thought 4mx8 would equal 32mb? Or am I barking up completly the wrong tree ?
Those figures say something about the bit arangement of the used chips (we remember 8bit = 1 byte) so those 4mx8 would be 4MB Modules as opposed to 1mx8 wich would be 1 MB modules. You allways have to use pairs of those 8bit RAM modules, as the RAM-expansion on the GVP (and on the ZII Bus in general) is 16bit. So you could either use four 1MB Modules for a total of 4MB or two 4MB modules for the maximum adressable 8MB. I belive you have to tell the board by a jumper what kind of modules you installed.
As for acceleratorboards: decent ones are hard to find these days and if, they are quite expensive. Especially the mentioned GVP530,the best card for the A500 ever build (apart from the 040card from ProgressivePeripherals with a hand full of in existence) can easyly go above 100 EUR.
For a good overview of A500 accelerators look here
http://www.amiga-hardware.com/a500accel.htmlOr in general have a look at the BigBoook here
http://www.amiga-hardware.com/
