Re: Multithreading OS for the C64

[M.Ruigrok@inter.nl.net (Maarten Ruigrok)]

fs1@aixterm2.urz.uni-heidelberg.de (Andre Fachat) wrote:


>This is the announcement of "OS/A65", a 6502 CPU operating system
>I wrote some time ago and which I now put on the Web. It is
>copyrighted under the GNU public license.
>Some of its features are:
> - preemptive multitasking/multithreading
how did you make it pre-emptive when the 6502 processor itself has no way to
check for boundaries or anything (so called trap errors coming from the
processor itself (in pc systems btw)). In what way can the operating system take
back and control software running under it?. Maybe someone from microsoft could
implement it in their own products ;-).

greetinx,
Maarten Ruigrok