Competition: what was the first RISC-microprocessor?

[doccybrown]

Who made it and when was it introduced?
Do you guys have an idea?

[doccybrown]

Ok I'll give some hints:
It has a very nice gold plated package!
The company that produced it that time does
not exist anymore but other derivated RISC-processors
are still produced by another company.

[Tegranphos]

801 from IBM??? And it was never commercialized

[Tegranphos]

ok, if not exist then are Acorn computers, and ARM microprocessor who not comercialized. the ARM2 from 198x (x =5?) are the first comercial RISC processor

[doccybrown]

[gshv]

Signetics 8x300 had very simple instruction set with only 16 instructions. If I'm not mistaken, the processor had 8 general registers and all instructions were 16-bit wide. There is a datasheet for this CPU in Signetics manual, printed in 1976, so it was released before 1980.

Gennadiy

[Tegranphos]

OK, I search and found:

The 801 was never commercialized, but a derivative single-chip implementation, the Research/Office Products Microprocessor (ROMP) was used in IBM's first production RISC system, the PC RT (introduced, like the first PA-RISC system, in January 1986)

http://www.aallison.com/history.htm


My bad english and this web mean that the first RISC, if 801 is discard, are HP PA-RISC

[Neon_WA]

[gshv]

[CPUShack]

8X300 is a RISC type device, though its usually heralded as the first DSP, as it had little support for memory operations.

[doccybrown]

No hit yet, I will give some more hints.
It is older than the 8X300 and it loves to crunch numbers

[UMMR]

[doccybrown]

The 8X300 was the first microprocessor that
had both a reduced instruction set and
a Harvard-architecture. But it was not the very first
microprocessor that had a reduced instruction set.

[alexander]

hello
General Instruments PIC1650 from 1977.

[kosmokrator]

lol.....i think i suspect...where u going this threat ....
but.....im silent