can anyone tell me how to include inline assembler in c source code on
minix in ACK.

in the code currently used:

asm volatile ("outb %b0,%w1" : : "a" (4), "d" (0x3ce));

ACK gives error
: asm undefined
: volatile not expected

also how do you access low level registers, I want to access the vga

Any tips advice sample code would be much appreciated.