R800 information

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Van [D-Tail]

Ascended (8254)

afbeelding van [D-Tail]

24-09-2004, 18:44

ULA, as in "Unidade de Lógica Aritmética"? Tongue

Van ricbit

Champion (438)

afbeelding van ricbit

24-09-2004, 21:46

ULA, as in "Unidade de Lógica Aritmética"? Tongue

Oh my mistake. I still think in portuguese most of the time, sometimes it slip through. I'm going to fix it.

Van Sonic_aka_T

Enlighted (4130)

afbeelding van Sonic_aka_T

24-09-2004, 23:02

Don't forget to change CISC into RISC Tongue

Van ricbit

Champion (438)

afbeelding van ricbit

24-09-2004, 23:12

Don't forget to change CISC into RISC Tongue
Wikipedia is supposed to have impartial, objective information. If we can't agree if R800 is CISC or RISC, then the information is best left out.

Van [D-Tail]

Ascended (8254)

afbeelding van [D-Tail]

25-09-2004, 00:32

*CISC CISC CISC!*

*strikes the flag*

Tongue

Van anonymous

incognito ergo sum (116)

afbeelding van anonymous

25-09-2004, 14:25

Seriously, you people should do some investigation on the subject, in stead of picking a side and acting like a teenager.
If you do the research, there's only one conclusion possible. R800 is RISC, it's the design, the name and the fact that it was always presented as a RISC CPU.

Really, the R800 opcodes are far less complex than those of an ARM CPU (ARM means Advanced RISC Machine).
R800 has very few instructions, and a relatively large register set. Most of the instructions imply a load-store architecture. You can say "Block move commands aren't very RISCy", yet the ARM has them too, just like flags.

I haven't heared any argument that the R800 would not be RISC, other than that it's based on the Z80 architecture, which is a non-argument because of what I wrote above also applies to the Z80, except that its implementation shows very few RISC characteristics (except that it's NOT microcoded, just like most RISC chips).

Compare a Z80 to a 68000 and 80386, and you will know how COMPLEX CISC really is! Compare a Z80 to an ARM, H8/300 and Atmel AVR, and you will know that the Z80 architecture lends itself almost perfectly for a RISC implementation.

This message is my final say on this... If you do the research I'm telling about, and you still come to the conclusion the R800 is 'CISC' then there's no hope for you... seriously. :\

Van dhau

Paragon (1570)

afbeelding van dhau

25-09-2004, 20:19

6502 has very few instructions, shell we proclame Atari VCS the first RISC-architecture supercomputer?

Van Sonic_aka_T

Enlighted (4130)

afbeelding van Sonic_aka_T

25-09-2004, 21:37

Are you just that dumb, or are you trying to be funny?

Van [D-Tail]

Ascended (8254)

afbeelding van [D-Tail]

25-09-2004, 23:35

Notice the hidden 'Tongue', Tongue

Van sjoerd

Hero (602)

afbeelding van sjoerd

26-09-2004, 05:02

R800 is a CISC CPU. There is no hope for me Smile

GuyveR800: I know why you think the R800 is a RISC CPU, I have no problem with that, I just think you're wrong here; now is your chance to respect a different opinion.

The fact the R800 has an accumulator should be enough to not call it RISC.
I am willing to discuss things more seriously and in more depth, but that seems to be impossible Sad

Are you just that dumb, or are you trying to be funny?I'm just trying to be funny, but 6205 is a lot more RISC than Z80.

And I am not trying to lure people into fights or something. I just think R800 is CISC. Feel free to not react. No need for insults and such. Thanks. Having said that:

Sonic_aka_T: R800 is CISC!!! You know that Tongue

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