That's the first step. After you have to deal with the fact : is it more important to have a dedicated controler that could be tricky to use, or general processing unit less specialised but more versatil so easier to programm ?
For example, you could use the coprocesseur interface of the LEON to add some specific instruction. If a 32 cpu is to big, 8 bits one could do the job. Some ASM programm still exist for it. 2006/8/3, Timothy Miller <[EMAIL PROTECTED]>:
On 8/3/06, Nicolas Boulay <[EMAIL PROTECTED]> wrote: > Such a cpu is tiny compare to the reste of the GPU in terme of space. > It offer great flexibility and provide means to correct some hardware > bug and adding some feature that could be very complexe and slow in > pure hardware. > I'm thinking about returning to the nanocontroller idea for VGA (and saying so-what to the massive latency for VGA reads). Some VGA stuff could possibly require specialized assist hardware, but the majority of it could be done in software. This controller could run double-duty for a number of other purposes. We would give this processor access to graphics memory and some user I/O signals, at least. VGA accesses would cause interrupts. We could also give it access to the GPU and the DMA contoller.
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