[B2-devel] Video in 24-bit addressing mode

[Simon F. <sg...@ar...>]

Hi.

I'm trying to use Basilisk II to emulate a Mac Classic - I want to emulate
a Mac running in 24-bit mode. My attempts to make it work using unpatched
source didn't work. I'm not sure how it's intended to work, but I saw:

const uint32 MacFrameBaseMac = 0xa0000000;

in cpu_emulation.h. In 24-bit mode this aliases with 0x000000, and on the
Classic the framebuffer is expected to live at 0x3fa700.

Given this, I'm not sure how the display is expected to work in Basilisk II
for a Classic or other 24-bit mode Macs. I've created a patch to make the
Classic framebuffer work (and it boots up 6.0.8 ok). However, I wanted to
check if I've missed something silly, and if there's just a flag I should
be specifying to make it work. If not, what's the appropriate way to
suggest a patch?

Thanks,
Simon.