> Am 18.05.2025 um 15:59 schrieb E. C. Masloch via Freedos-devel
> <freedos-devel@lists.sourceforge.net>:
>
> However, the code you quoted is missing a check whether the returned AL
> register is zero. If it is (indicating the call is supported) and you do run
> a HLT afterwards regardless, then every call to the idle routine could idle
> for twice the time it should. This could worsen response times.
The current code looks like this:
if (!no_multiplex_int) {
r.w.ax = 0x1680;
intr(0x2f, &r);
no_multiplex_int = r.h.al;
}
else {
cpu_hlt();
}
So this now falls back to HLT only if a previous INT2F call failed, like Jerome
does in his code.
Bernd
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