Login
Back to forumSee the full topicGo to last reply

Posted By

Litwr
on 2014-08-27
03:34:58
 Re: Z80 GUI: SymbOS

@JamesD My latest Xlife project shows 1:2.6-2.7 z80:6502 speed ratio. Xlife works with up to 40 KB of data at every its cycle.
@MMS SymbOS is updated at 2014 but for the MSX only. The web browser looks fantastic - much better than one for c64. I've played with CPC6128 SymbOS. It is the great work with the astonishing interface (the disk directories are supported!) but it missed GeoWrite, GeoCalc, ... I can also add that 128 KB RAM allows to launch only several simple SymbOS applications.
EDIT. There are the final results produced by Xlife-8 speed tests.
Commodore +4 at the normal screen mode is close to Amstrad CPC6128 with 3.6 MHz
Commodore +4 at the screen blank mode is close to Amstrad CPC6128 with 5.4 MHz
Commodore +4 at normal NTSC screen blank mode is close to Amstrad CPC6128 with 6.7 MHz
Commodore 64 at normal screen mode is close to Amstrad CPC6128 with 3 MHz
Commodore 128 at 2 MHz mode with 80 columns screen is close to Amstrad CPC6128 with 6.3 MHz
The standard z80 frequency at Amstrad CPC6128 is 4 MHz. So if we will count z80 wait states we give 3.15:1 6502:z80 speed ratio.




Back to top


Copyright © Plus/4 World Team, 2001-2024