HelenOS sources

CLK_PORT4          97 kernel/arch/amd64/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0x36);
CLK_PORT4         110 kernel/arch/amd64/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0x30);
CLK_PORT4         120 kernel/arch/amd64/src/drivers/i8254.c 		pio_write_8(CLK_PORT4, 0xc2);
CLK_PORT4         128 kernel/arch/amd64/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
CLK_PORT4         135 kernel/arch/amd64/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
CLK_PORT4         141 kernel/arch/amd64/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
CLK_PORT4          97 kernel/arch/ia32/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0x36);
CLK_PORT4         110 kernel/arch/ia32/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0x30);
CLK_PORT4         120 kernel/arch/ia32/src/drivers/i8254.c 		pio_write_8(CLK_PORT4, 0xc2);
CLK_PORT4         128 kernel/arch/ia32/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
CLK_PORT4         135 kernel/arch/ia32/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
CLK_PORT4         141 kernel/arch/ia32/src/drivers/i8254.c 	pio_write_8(CLK_PORT4, 0xd2);
HelenOS homepage, sources at GitHub