Re: Theorizing how to replace a VIC-II by hardware.

From: Segher Boessenkool <*segher_at_kernel.crashing.org*> Date: Wed, 29 Jul 2020 12:38:55 -0500 Message-ID: <20200729173855.GG17447_at_gate.crashing.org> · segher_at_kernel.crashing.org

On Wed, Jul 29, 2020 at 04:56:28PM +0100, smf wrote:
> On 24/07/2020 19:56, tokafondo wrote:
> >- What do you think?
> 
> You missed the lightpen interrupt, while this isn't particularly useful
> on modern screens, because of the way the inputs work it can also be
> triggered from the keyboard or joystick.
> 
> You also don't mention sprite collisions, which can also trigger an
> interrupt.

Those (and sprite priorities) are hardest to implement in software, fwiw
(at good speed; they aren't actually *hard*, the processing in the actual
chips is pretty small and simple -- but it works per bit, not good for
software).

Segher