Talk:HP FOCUS

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First 32-bit chip?

I'm not sure that this was the first 32-bit single-chip CPU — the NS320xx article claims otherwise. --StuartBrady (Talk) 21:21, 3 September 2006 (UTC)[reply]

See NS320xx this one was available as NS32016 in the late 1970s but had a 16-bit external databus ... The NS32032 was the 32 Bit variant, but arrived in 1984.

The Focus arrived 1982 and had a 32-bit interconnect between CPU/MMU and CPU/IOP.

There is an other difference: the Focus CPU was a RISC CPU. —Preceding unsigned comment added by User:Nmoas (talk • contribs)

Fair enough. (Although, actually, stack architecture != RISC.) --StuartBrady (Talk) 11:24, 4 September 2006 (UTC)[reply]

(Although, actually, stack architecture != RISC.) Why not? There is no "stack" limit for Risc CPU's, some/many are stack architectures and implement push and pop commands for saving multible registers and to de/in-crease the stack pointer. —Preceding unsigned comment added by Nmoas (talk • contribs)

Well, one of the defining characteristics of RISC is a large general purpose register file. You could argue that register windows are sort of like a stack, but that would be missing the point. Really, it's not RISC. --StuartBrady (Talk) 15:28, 4 September 2006 (UTC)[reply]