[syslinux] proper way to sleep
Erwan Velu
erwan at seanodes.com
Tue Aug 21 10:55:16 PDT 2007
Miguel wrote:
> This is not spam about sleep aids :)
>
> Q: Is there a 'standard' way to sleep for a specified number of BIOS ticks
> (or seconds) in a com32 program?
>
> I grepped through the com32 library source and didn't find anything for
> 'sleep' or 'tick'.
>
> If not, you may want to consider adding:
> void syslinux_sleep(int seconds);
> void syslinux_sleep_bios_ticks(int ticks);
>
>
I had the same problem in my com32 modules.. It could be nice to add a
sleep(unsigned int msec) function.
Can't we use such code ?
unsigned char sleep(unsigned int msec)
{
unsigned long micro = 1000*msec;
com32sys_t inreg,outreg;
REG_AH(inreg) = 0x86;
REG_CX(inreg) = (micro >> 16);
REG_DX(inreg) = (micro & 0xFFFF);
__intcall(0x15,&inreg,&outreg);
return REG_AH(outreg);
}
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