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 GEOS sources are still unpublished too.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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