From: Jon M. Taylor <taylorj@ecs.csus.edu>
  To  : ggi-develop@eskimo.com
  Date: Sun, 2 Aug 1998 14:12:56 -0700 (PDT)

Re: Multiple boards.

On Sun, 2 Aug 1998, Jan Kneschke wrote:

> 
> On Sun, 2 Aug 1998, Brian Julin wrote:
> 
> > On Sun, 2 Aug 1998, Wolf Shaman wrote:
> > 
> > > Should a single driver handle all detected instances of that board?
> > 
> > This would be more efficient yes.  Would be nice too if the S3 driver
> > could be made into a core that can have code linked in from the more
> > primitive S3 based chipsets and handle them all together.
> 
> do you think about a core-driver for trio+vision+virge+(savage) ?? 
> or one core driver for every family ?? 

	I'd say one core driver for all S3 cards.

> the biggest parts of every driver are init and mode-setting. And both part
> are slightly different between vision and virge. 

	Slightly, but not enough to justify having a separate core 
driver, IMHO.

> virge and trio are quite
> similar. 

	They are virtually identical.

> since i have docs for vision, virge and trio and own a virge/gx and
> a vision986 i'll have a look when degas-kgi comes.
> 
> just some pre-information-catching:
> 
> are the following chipset-maintainer correct ??
> #define MAINTAINER      Jochen_Hoenicke
> #define DRIVER_NAME     "S3 86c928 chipset driver"
> #define MAINTAINER      Jon_Taylor
> #define DRIVER_NAME     "S3 86c765 (Trio64) chipset driver"
> #define MAINTAINER      Stefan_Mars				<< teunis ??
> #define DRIVER_NAME     "S3 ViRGE family chipset driver"
> #define MAINTAINER      Jan_Kneschke				<< YES :)
> #define DRIVER_NAME     "S3 86c964/86c968 chipset driver"
> #define MAINTAINER      ???
> #define DRIVER_NAME     "S3 86c864/86c868 chipset driver"
> 
> is the trio64v+ == trio64v2 ?? 

	Almost.  The V2 has a higher speed RAMDAC (170 MHz vs 135 Mhz), 
supports higer memory bandwidth and SDRAM, and has a slightly enhanced 
STREAMS processor (hardware double-buffering).  But they are identical 
otherwise.

> i've never seen a trio64v+ (for which i have the docs for), 

	They were common around '95, but they had a lot of bug problems 
and no one sells them anymore.

> but you can buy
> a trio64v2-card for 70DM everywhere ...

	S3 still sells the V2 as its low-end "business graphics" and 
laptop solution.

> has someone already had a look at the s3-savage3d ?? 

	Just the specs on the S3 website.  IIRC, the 2D part is a 
Trio64V2 with a faster RAMDAC.

Jon

---
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becoming one with God.'
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