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Article #9276

Re: Possible loss of the Copper (was Re: AB3D II beats Quake....)

#9276
From: K. C. Lee
Date: Thu, 18 Apr 1996 09:29
45 lines
2811 bytes
Juergen Fischer (fischerj@Informatik.TU-Muenchen.DE) writes:
> : synced. (With PCI video cards, interrupt sharing is not a problem.)
> 
> Be honest people, which of your PCs+OS makes use of a vblank interrupt ?

But that doesn't mean the Amiga can't use it with a SVGA chip.  Even if it
is not ther, it would take $0.50 worth of parts to add one in.

> : And if the mouse is a hardware cursor (driver support) it won't flicker 
> : either.
> yes. not flicker.

There IS hardware support of a mouse cursor on any reasonably SVGA
accelerators.  Prices are around $99 (and possibly lower due to RAM prices
now)  The software doesn't use it doesn't mean the hardware is bad.  

Come to think of it because of years of bad software, the PC hardware has
evolved to a state where it actually off load the CPU to make things
run more smoothly.  Who else would make serial chips with 32-bytes or
64-bytes worth of FIFO ?  These things would make the Amiga fly.

> : >yes, and the Amiga one allows use of custom hardware => 50Hz.
> : >I also vote for API driven special hardware.
> :                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
> : This is EXACTLY what an accelerated SVGA video card is.
> 
> yes, even under DOS, using VESA, kind of small API.

What stop one from making good API drivers for it ?  Isn't that what the
CyberGfx and RTG is all about ?  We won't run VESA BIOS extension anyway. 
I wouldn't mind the VESA bus though as you can easily run it at 40MHz on
the Walker 030 bus with minimal logic.

The whole arguement boils down to "Just because good SVGA Accelerator are
not used to their fullest extend doesn't mean someone cannot do that in
the Amiga".  All the current 3rd party Amiga graphics cards uses these
chips.  They are FAST and runs well.  The only thing wrong with them is their
price.  That could be fixed and improved very easily with $20 worth of FPGA
on a daughter expansion on the Walker which could allow one to use VESA
bus base PC SVGA accelerator cards.

>    fischerj@øInformatik.TU-Muenchen.DE (Juergen "Rally" Fischer)   =:)

K. C. Lee
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Path: arc1-ca.pugleaf.net!FreeNet.Carleton.CA!de351
From: de351@FreeNet.Carleton.CA (K. C. Lee)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: Possible loss of the Copper (was Re: AB3D II beats Quake....)
Date: 18 Apr 1996 09:29:24 GMT
Organization: The National Capital FreeNet
Sender: de351@freenet6.carleton.ca (K. C. Lee)
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References: <4iu7hb$utt@coranto.ucs.mun.ca> <2726.6661T189T1181@mbox.vol.it> <4jmkma$4s0@valour.pem.cam.ac.uk> <4jsj9c$i7q@sunsystem5.informatik.tu-muenchen.de> <DpBp8G.7qK@novice.uwaterloo.ca> <4km1bv$irf@sunsystem5.informatik.tu-muenchen.de>
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