Counting Extended Ram

[deus_the_programmer]

hi i want to show the full amount of extended ram in my computer system.
this is the code i have got so far, but it does not show the correct amout on my system,i have 80mb and it shows it as: -61.


int get_system_memory(void)
{
int base;
int ext;
base = nvread(0x15) | (nvread(0x16) << ;
ext = nvread(0x17) | (nvread(0x18) << ;
cprintf("\n\r%d Base Memory, %d Extended Memory", base, ext);
return 0;
}

the base memory count shows 640k (which is fine, it's just the extended amout that is broken.)


PLEASE help me correct this code.

ed.