Posted By
Litwr
on 2013-07-30
15:55:38
|  Re: Z80 GUI: SymbOS
> I'll take programming the Motorola 6803 or 6809 over either of those.
They are very rare in the microcomputers. It's curious what were the systems based on these CPU?
> Z80 assembler isn't bad.
I only wrote that 6502 assembler is much easier. z80 is the obvious CISC but 6502 provides only base operations like RISC.
> Let me just say that the ARM and 6502 are *not* alike.
Let's see my points:
1. 6502, 6809, ARM don't waste cycles like i8080, z80
2. http://en.wikipedia.org/wiki/ARM_architecture#History - ARM was developed by 6502 men for 6502 replacement
SymbOS looks impossible for 4MHz z80 but 1.8MHz C+4 or 2MHz C128 should be faster!  Why they don't publish the sources? GEOS sources are still unpublished too. IMHO It is very odd. 
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