24 Oct
2005
24 Oct
'05
10:46 a.m.
On 10/23/2005 at 9:07 PM John Allain wrote:
My simple answer...
On a 200Mhz Pentium, SimH running VMS feels like a MicroVAX II
(close to a 750). At 700Mhz, it feels like a MicroVax 3500. Basically
a directly proportional increase.
Okay, then how fast would one suppose that a Transmeta VLIW implementation
would run (replace the "X86 Code Morphing" ROM with your own version of a
"VAX emulation" ROM)? Would it most likely run faster than an FPGA
implmentation? If so, why bother with the FPGA? Given that there was no
single VAX implemenation by DEC, how could this even offend the purists?
It would let one use a commodity product (I believe you can buy TM
motherboards) and more significantly, allow one to easily repair problems
in compatibility.
...just trying to suss out the advantages of using an FPGA version of a
relatively complex machine...
Cheers,
Chuck