Subject: Re: grf_cl.c tested on A2000+Spectrum1MB
To: amiga-dev <amiga-dev@NetBSD.ORG>
From: Markus Illenseer <markus@TechFak.Uni-Bielefeld.DE>
List: amiga-dev
Date: 02/07/1995 13:07:49
On Feb 5, 10:50am, Michael L. Hitch wrote:
> > Spectrum memory
> > grf_cl: zap->size 2097152          <--- !!!! my Spectrum does not have 2MB
>   Does this mean that the Spectrum configures 2MB of memory space, even
> if it only has 1MB?  GVP strikes again!!

 No, we manually set the size to 2MB.

>   The README states that the Spectrum with 2MB is supported - it doesn't
> say anything about support the 1MB board.

 We didnt until now :-)

>   Zthreebus should have already mapped it - and the current kernel does
> away with separate ztwo/zthree bus configuration and should handle the
> mapping in a consistant manner.

 I hope so, this would simplify quite a lot...

>  It would be much better to make the driver work with either 1M or 2M
> dynamically.  If the 1MB board really indicates the memory space is 2M,
> perhaps the driver will have to test the memory to see if all 2M is
> present and adjust the size accordingly.

 Yep, I agree. As I stated before, he is the first with a 1MB Spectrum,
I strongly believe that same will happen for 1MB Piccolo, too.

Markus Illenseer