I see now even less the need to extend the ISA.
Thomas
I understand the idea of in theory being able to run new applications on old hardware.
But to be honest I'm not sure how realistic this hope is.
Please read my points and explain your view on them.
As ou know the new cards are going to have a local RTG Graphic Video card included.
The CPU has very fast access to this memory.
We talk here about direct read /write access from CPU with several hundred MB/sec.
This means direct single pixel manipulation will be very very fast.
Compared to even the fastest AMIGA Zorro card we have here a speed up of 50 times or 100 times.
Yes the local memory access will be 50 or 100 times faster than you Memory Access over Zorro.
As soon new applications use this an runing on old 68060 system with RTG card is hopeless
as the speed difference between new and old system is over 10 times.
This means if you new game or application uses the new card.
Then the frate rate on old system would be so much slower - its will be come pointless.
I assume you see this too, right?
The new CPU is so much faster than we can now look at stuff like H264 playback which is totally senseless to try on old 68030.
So whether there is a new instruction used or not - does not make a difference the new video datatype will anyway not run on old slow 68030.
And also 68060 will be too slow in many cases.
Olaf did ask the a similar question. But you did not answer it yet.
He did ask you what happens if people use the SAGA chipset in their apps?
I agree with you Thomas that a "hello world" does not need any new instructions.
But a "killer app" which we all look forward too like modern webbrowser or good video player
these will anyway out-spec the old system - the whether the use new instructions or not makes no difference the old 68K CPU are simply to slow for them anyway.
Do you agree here or what is your point?
