Re: A look at the C-One (Commodore One) reconfigurable computer

["Prodatron / SymbiosiS" <mika@falkag.com>]

> Actually, more like 1.5-2x as fast as a 1 MHz 6502.
Hm, I don't know. I just have some values like this:
Data transfer to/from the IDE-Interface: CPC: 162KB/s, C64: 60KB/s
Floppy speed: CPC: 20KB/s, I don't know the speed on C64, but I heard
something about 9KB/s, when you use tricks.

> But it does support diskdrives - real ones.
That are good news! I didn't know it. Hope I can organize one soon to
try it.

> It has twic­e the memory bandwidth for video, but it
> lacks sprites and hw scro­ll, and the video addressing
> is a bit wonky.
The lack of hardware sprites was one of the biggest disadvantages of
the CPC, I totally agree. Maybe that was the main reason, why many
games were better on C64 than on CPC.
CPC was also able to do HW scrolling, but not many games used it. The
video addressing was a little bit complicated, but you are still able
to do very fast screen output on CPC when you know how, so that doesn't
cost any performance at the end.

> Calling the Z80 a more ­modern design than the 6502
> is also a bit of a stretch - the 6502 c­ame out in
> 1975, and the Z80 in 1976, but was a clone of the
> 8080 which­ came out in 1974.
Well, the Z80 had many improvements comparing to the 8080.
And as a spoiled Z80 programmer I am in a shock, when I see 6502
assembler ;-) It's a little bit different, if you have 3x8Bit Registers
at all (6502) to work with, or 18x8Bit Registers (Z80), from which you
can use 16 as 8x16Bit Registers. Ok, the Z80 doesn't have a zeropage.
Regards,
Prodatron