Is the Vampire 500 compatible with the DKB Megachip EXTERNAL LINK As in is it physically compatible (both will physically fit) and the Megachip will still function when the Vampire 500 is installed (the system will have 2MB chip memory).

When you are using the DIGITAL-VIDEO video output of the Vampire 500, does it use chip memory for the screens or only the memory on the Vampire board? I guess the real question is if it really matters how much chip memory the machine has once you only use the RTG of the Vampire. If I only have 512K chip memory, will that impose any limitations on the number, resolution or bit depth of screens that can be used?

Thanks for your help!

  The megachip cannot fit on the A500 as the Vampire rests over the agnus socket, you would need a cpu adapter tp relocate the v500 further back in order to fit it. The V500 will use fastmem for DIGITAL-VIDEO so you have little chipmem used.  Best solutions are either Rev6a 1mb chipmem hack or an A500+ which has 1mb chipmem already and can be expanded to 2mb chipmem

  The A2000 can also have the megachip installed if you use the a2000 adapter to relocate the V500.

I used pin strips in the 68000 socket, easy .

On the Amiga, "chip" memory is accessible by the custom chips (not just the CPU).

Classic Amigas have from 512K to 2MB of chip memory.

So the Vampire's DIGITAL-VIDEO is driven from the Vampire's memory.

Stupid question as hell!!! Amiga has Chip memory and Fast memory. I suppose Megachip expands Chip memory up to 2MB. It is common value in last models classic Amigas (even A600 can be easy expanded to 2MB Chip).

Isn't it so that once the Vampire is installed and runs in the amiga, only memory onboard the Vampire is used? Being dependent on memory that is around 200 times slower than the rest of the accelleratorboard sounds outright pants-on-head retarded.

I'm not Apollo team, but i'll try to answer your question.

Short - Yes and No, it depends on the function you're trying to access.  The Chip memory does not necessarily limit CPU speed of the Vampire.

The Vampire is not a complete replacement for the Amiga chips, it's an augmentation.  Vampire provides a much faster CPU, 'fast memory', and enhanced functionality that goes beyond the stock chipset (without replacing it).  Like any other accelerator, the AmigaOS (and software applications) determine whether to use the chip memory or 'fast memory' depending on the need.

For example - Paula, Amiga's soundchip (and other things) can only access 'chip memory', so if you want to play music out the amiga's audio out, you *must* use the address that relates to chip memory.

If you're running a calculation of some kind that is fully CPU dependent, then the CPU can use whatever RAM it has access to since the CPU can access addresses much higher than (the up to) 2MB that the chipset is limited to.

Now, last thing i'll say is if you're outputting via the Vampire DIGITAL-VIDEO to a 1920x1080 desktop, you're going to be hitting Vampire RAM for the desktop because the Vampire emulates a 'RTG' (retargetable graphics) as a driver that the OS uses to write to the new addresses provided by the vampire (as opposed to the usual Amiga video out). 

EXTERNAL LINK 
Good primer on Chip vs Fast RAM.

And I like it LIKE THAT just fiine :DD!

I understand what you think, but I have to say I think it's totally bat-shit crazy if what you claim is in fact true on the Vampire accelleratorboards. Not readressing chipram to a chunk (of say 2, 4, 6, 8 megabytes of RAM) on the onboard Vampire and instead relying on the 512k to 2megs for all things customchips sounds weird.  Unless, of course, you have pulled these facts straight out of the air. Which is why I'd rather have a statement with facts from a team member instead of some feelings and guess-work from the choir.
With all due respect. I'm part of this choir, or I wouldn't have spent time on the forum.

Curious.