X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=blobdiff_plain;f=src%2FMakefile.build;h=b73320579ecc342f0b28b0f8bc78bb3ea513de3b;hp=ceb34121b6aeb5557097ad941f8119156c8ad323;hb=f1f2dc8de9e336d83383692d4478bb14a3dafc11;hpb=94d17ee9287aec1c4c9ee37ca02615e8293a5f3a

diff --git a/src/Makefile.build b/src/Makefile.build
index ceb3412..b733205 100644
--- a/src/Makefile.build
+++ b/src/Makefile.build
@@ -23,7 +23,8 @@ threads_SRC += threads/malloc.c		# Subpage allocator.
 threads_SRC += threads/start.S		# Startup code.
 
 # Device driver code.
-devices_SRC  = devices/timer.c		# Timer device.
+devices_SRC  = devices/pit.c		# Programmable interrupt timer chip.
+devices_SRC += devices/timer.c		# Periodic timer device.
 devices_SRC += devices/kbd.c		# Keyboard device.
 devices_SRC += devices/vga.c		# Video device.
 devices_SRC += devices/serial.c		# Serial port device.
@@ -32,6 +33,7 @@ devices_SRC += devices/input.c		# Serial and keyboard input.
 devices_SRC += devices/intq.c		# Interrupt queue.
 devices_SRC += devices/rtc.c		# Real-time clock.
 devices_SRC += devices/shutdown.c	# Reboot and power off.
+devices_SRC += devices/speaker.c	# PC speaker.
 
 # Library code shared between kernel and user programs.
 lib_SRC  = lib/debug.c			# Debug helpers.