Re: SIMH CPU-idleing support

[Matt Thomas <matt%3am-software.com@localhost>]

On Nov 18, 2010, at 10:13 AM, Valeriy E. Ushakov wrote:
> Instead of whacking idle loop to look again like somthing that simh
> heuristic can detect, may be we can invent an "idle" instruction, that
> is side-effect free on real hw, but which simh can detect and treat as
> a request to sleep until next interrupt?

tstb $0
95 00

shouldn't be encountered in normal code and definitely not in the kernel.

Easy to detect and will only reset a few PSL flags.