diff --git a/src/asm/make.sh b/src/asm/make.sh
index 2f39996..863334a 100644
--- a/src/asm/make.sh
+++ b/src/asm/make.sh
@@ -1,30 +1,31 @@
-#!/bin/sh
-
-TARGET=$(basename $1 .c)
-TARGET_CPU=r3000
+TARGET=r3000
 ROM_WORDADDR_WIDTH=12
 RAM_WORDADDR_WIDTH=11
 
-echo Building $TARGET...
+AR=mips-elf-ar
+CC=mips-elf-gcc
+LD=mips-elf-ld
+OBJCOPY=mips-elf-objcopy
 
-mipsel-elf-as.exe -march=$TARGET_CPU startup.s -o startup.o
-mipsel-elf-as.exe -march=$TARGET_CPU init.s -o init.o
-mipsel-elf-as.exe -march=$TARGET_CPU kernel.s -o kernel.o
+CFLAGS=-march=$TARGET
 
-#mipsel-elf-gcc -O2 -march=$TARGET_CPU $TARGET.c -o $TARGET.s -L $LIBDIR
+libsys.a:
+	$(CC) $(CFLAGS) -c libsys/startup.s -o startup.o
+	$(CC) $(CFLAGS) -c libsys/init.s -o init.o
+	$(CC) $(CFLAGS) -c libsys/kernel.s -o kernel.o
+	$(CC) $(CFLAGS) -c libsys/utils.c -o utils.o
+	$(AR) -r libsys.a startup.o init.o kernel.o utils.o
 
-mipsel-elf-gcc -msoft-float -O2 -c utils.c -o utils.o
-mipsel-elf-gcc -msoft-float -O2 -c $TARGET.c -o $TARGET.o
-mipsel-elf-ld.exe -G 0 -M -T link.ld startup.o init.o kernel.o utils.o $TARGET.o -o $TARGET.elf -L /usr/local/mipsel-elf/lib -L /usr/local/lib/gcc/mipsel-elf/3.4.6 -lc -lgcc >$TARGET.map
-mipsel-elf-objdump.exe -d $TARGET.elf > $TARGET.dis
 
-mipsel-elf-objcopy.exe -j .stext -j .ktext -j .text $TARGET.elf -O binary $TARGET.ROM.bin
-mipsel-elf-objcopy.exe -j .data $TARGET.elf -O binary $TARGET.RAM.bin
+testbench.elf:
+	$(CC) $(CFLAGS) -c testbench.c -o testbench.o
+	$(LD) $(CFLAGS) -lsys -o $@
+	$(OBJCOPY) -j .stext -j .ktext -j .text $@ -O binary $@.ROM.bin
+	$(OBJCOPY) -j .data $@.elf -O binary $@.RAM.bin
 
-./romgen.exe $TARGET.ROM.bin $ROM_WORDADDR_WIDTH
-./ramgen.exe $TARGET.RAM.bin $RAM_WORDADDR_WIDTH
+romgen.exe $@.ROM.bin $ROM_WORDADDR_WIDTH
+ramgen.exe $@.RAM.bin $RAM_WORDADDR_WIDTH
 
 #xtclsh.exe $TARGET.RAM.tcl
 #xtclsh.exe $TARGET.ROM.tcl
 
-echo done.
\ No newline at end of file