Q: control is a C&T 65550?

[Paul Mackerras]

Daniel Jacobowitz <drow at false.org> wrote:

> That's one of those if-i-had-more-time things - and more specifically,
> if I knew how to dump video regs under macos.  Is it trivial?

This is where I use xmon.  There is a macos version at (I think)
ftp://ftp.linuxppc.org/users/paulus/misc/xmon.bin.  From memory, the
control registers are at 0x90010000 and the RADACAL (ramdac/cursor
chip) registers are at 0xf301b000.

The other thing to do is to browse through the darwin sources from
apple and see if they have a control driver somewhere.

IIRC, the hardware cursor uses some extra bytes on each scan line and
some registers in the RADACAL.

Paul.

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