[OpenBIOS] [PATCH] ppc: fix ESCC reg properties

[Mark Cave-Ayland]

On 04/02/16 21:55, Alyssa Milburn wrote:

> On Wed, Feb 03, 2016 at 09:58:50PM +0000, Mark Cave-Ayland wrote:
>> Note that currently we don't add the DBDMA properties at the end of the
>> reg property because QEMU doesn't yet support serial DBDMA, but perhaps
>> it is time to start turning on DBDMA logging to see if this is what's is
>> causing OT to get stuck.
>>
>> In fact, do we know if OT ever worked on MOL at all or did it provide
>> its own drivers?
> 
> In any case, MOL has a comment /* this hack keeps MacOS 9 happy */ just
> above the point where it enables serial DBDMA on ch-b, so that sounds
> like a rather big hint for us. I might go try this now..

Interesting. Does MOL implement full emulation or does it manage to
persuade OS 9 to not crash by fudging some properties? And thinking
about it, does MOL use OT for its networking emulation or does it use
its own drivers?


ATB,

Mark.