Re: Accessing the C64 memory between 65xx chips operations.

SuperCPU works by having it's own faster ram, with the option of sending
updates to the 64k main ram so that vic2 can access it. Those updates
have to be sent at 1mhz and you have to avoid vic2.

You can specify what areas of memory are mirrored, if you mirror all of
ram then it can have a severe performance overhead.

Sharing multiple cpu's between 64k is kinda pointless, even if you end
up making it able to run two cpu's simultaneously then you're crippled
by the lack of memory to use that extra cpu power for.

On 19/04/2020 21:24, tokafondo wrote:
> Well, time then to learn how C64 'Turbo' accelerators with external CPUs did
> work, then.
>