Cyril Zorin
Fri, 18 Aug 2006 06:03:07 -0700
vidhrdw/model1.c is the equivalent of your graphics card, the V60 is the equivalent of your pentium whatever.Imagine looking at a windows graphics card driver and working out from the values it pokes to the hardware, what it's actually trying to make appear on the screen.
No no I understand that. What I was asking is whether or not the original V60 assembler code for, say, the graphics routines, was translated by hand, op by op, from ASM -> C.
The major problem with Virtua Racing is in the maths coprocessor, which is an undocumented TGP running custom software that has not been dumped. Emulating it is like being told to solve an equation using specific values for x, y & z, but not told what the equation is. The only clue is what the results are used for in the code. You can also display the values on screen in realtime to see what values are used and when.
Are there any efforts to get a dump? Is there anyone we know that could do this?
c) Is there any place where model1 operations/development is documented?src/drivers/model1.c src/vidhrdw/model1.c src/machine/model1.c
I was more looking for something that explains the overall "design" of the model1 graphics libraries and so on. That's fine.
IIRC Intel sued Nec over the V60 because of a license issue so the documentation is very hard to come by.
Has anyone tried contacting NEC and asking for the manual? This might sound crazy, but who knows.
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