tag	line	file	source code
UART_SCR	1206	kernel/chr_drv/serial.c	scratch = inb(UART_SCR + port);
UART_SCR	1207	kernel/chr_drv/serial.c	outb_p(0xa5, UART_SCR + port);
UART_SCR	1208	kernel/chr_drv/serial.c	status1 = inb(UART_SCR + port);
UART_SCR	1209	kernel/chr_drv/serial.c	outb_p(0x5a, UART_SCR + port);
UART_SCR	1210	kernel/chr_drv/serial.c	status2 = inb(UART_SCR + port);
UART_SCR	1211	kernel/chr_drv/serial.c	outb_p(scratch, UART_SCR + port);