: MPC7400 microprocessors support the MPX bus architecture with a 64-bit data bus and a 32-bit address bus.
:So the data bus is 64 bit, does this not make the chip 64 bit? If not, please correct me.
Very well then, I will correct you
the 7400/G4 has a 32 ALU, which means that it is a 32 bit processor. Just like the Pentium onwards are 32 even though the external databus is 64 bit. The only thing worth looking at when determining that is the ALU, the "only" thing changing the external bus width does is improving I/O and memory speed (and making it more expensive:-)) Speaking of 64 bit, there was a 64 bit PPC called the 620 but that quickly vanished from Motorolas price lists. Otherwise, nearly all the CPU manufacturers have 64 bit CPUs, including Alpha, Mips, Sparc, IBM Power. The only major one that doesn't is Intel...
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: MPC7400 microprocessors support the MPX bus architecture with a 64-bit data bus and a 32-bit address bus.
:-))
:So the data bus is 64 bit, does this not make the chip 64 bit? If not, please correct me.
Very well then, I will correct you
the 7400/G4 has a 32 ALU, which means that it is a 32 bit processor. Just like the Pentium onwards are 32 even though the external databus is 64 bit. The only thing worth looking at when determining that is the ALU, the "only" thing changing the external bus width does is improving I/O and memory speed (and making it more expensive
Speaking of 64 bit, there was a 64 bit PPC called the 620 but that quickly vanished from Motorolas price lists. Otherwise, nearly all the CPU manufacturers have 64 bit CPUs, including Alpha, Mips, Sparc, IBM Power. The only major one that doesn't is Intel...