/ $Header: $ .unixorder / outb (), as per the System V DDI/DKI: / void outb (int _port, uchar_t _data); / / The header file <kernel/x86io.h> contains the prototype. / $Log: $ / .text .globl outb port = 4 data = 8 outb: movl port(%esp), %edx / port movl data(%esp), %eax / data outb (%dx) ret