diff --git a/assembly/applications/brief/hello_world.asm b/assembly/applications/brief/hello_world.asm
index 0333cfb..4e6e764 100644
--- a/assembly/applications/brief/hello_world.asm
+++ b/assembly/applications/brief/hello_world.asm
@@ -1,5 +1,5 @@
 org 0xA000
-include '../../bios/abi-generated.asm'
+include '../../os/abi-generated.asm'
 
 STRING: DB "Hello",0
 ld bc, STRING
diff --git a/assembly/dev-headers/monitor.asm b/assembly/dev-headers/monitor.asm
index 538af8f..9c25421 100644
--- a/assembly/dev-headers/monitor.asm
+++ b/assembly/dev-headers/monitor.asm
@@ -1,2 +1,2 @@
 org 0xA000  ; Set starting position to ram
-include '../bios/main.asm'
\ No newline at end of file
+include '../os/main.asm'
\ No newline at end of file
diff --git a/assembly/bios/Makefile b/assembly/os/Makefile
similarity index 98%
rename from assembly/bios/Makefile
rename to assembly/os/Makefile
index 37410d8..abccb39 100644
--- a/assembly/bios/Makefile
+++ b/assembly/os/Makefile
@@ -1,4 +1,4 @@
-bios:
+os:
 	@echo "Building PAT80 rom..."
 	@z80asm -i main.asm -o rom.bin || (exit 1)
 	@echo "Generating label lookup table..."
diff --git a/assembly/bios/README.md b/assembly/os/README.md
similarity index 100%
rename from assembly/bios/README.md
rename to assembly/os/README.md
diff --git a/assembly/bios/abi-generated.asm b/assembly/os/abi-generated.asm
similarity index 100%
rename from assembly/bios/abi-generated.asm
rename to assembly/os/abi-generated.asm
diff --git a/assembly/bios/drivers/arduino_terminal.asm b/assembly/os/drivers/arduino_terminal.asm
similarity index 100%
rename from assembly/bios/drivers/arduino_terminal.asm
rename to assembly/os/drivers/arduino_terminal.asm
diff --git a/assembly/bios/drivers/hd44780.asm b/assembly/os/drivers/hd44780.asm
similarity index 100%
rename from assembly/bios/drivers/hd44780.asm
rename to assembly/os/drivers/hd44780.asm
diff --git a/assembly/bios/drivers/keyboard.asm b/assembly/os/drivers/keyboard.asm
similarity index 100%
rename from assembly/bios/drivers/keyboard.asm
rename to assembly/os/drivers/keyboard.asm
diff --git a/assembly/bios/drivers/sn76489.asm b/assembly/os/drivers/sn76489.asm
similarity index 100%
rename from assembly/bios/drivers/sn76489.asm
rename to assembly/os/drivers/sn76489.asm
diff --git a/assembly/bios/drivers/vgax.asm b/assembly/os/drivers/vgax.asm
similarity index 100%
rename from assembly/bios/drivers/vgax.asm
rename to assembly/os/drivers/vgax.asm
diff --git a/assembly/bios/libs/strings.asm b/assembly/os/libs/strings.asm
similarity index 100%
rename from assembly/bios/libs/strings.asm
rename to assembly/os/libs/strings.asm
diff --git a/assembly/bios/libs/time.asm b/assembly/os/libs/time.asm
similarity index 100%
rename from assembly/bios/libs/time.asm
rename to assembly/os/libs/time.asm
diff --git a/assembly/bios/main-dev.asm b/assembly/os/main-dev.asm
similarity index 100%
rename from assembly/bios/main-dev.asm
rename to assembly/os/main-dev.asm
diff --git a/assembly/bios/main.asm b/assembly/os/main.asm
similarity index 100%
rename from assembly/bios/main.asm
rename to assembly/os/main.asm
diff --git a/assembly/bios/monitor.asm b/assembly/os/monitor.asm
similarity index 100%
rename from assembly/bios/monitor.asm
rename to assembly/os/monitor.asm
diff --git a/assembly/bios/tests/sndtest.asm b/assembly/os/tests/sndtest.asm
similarity index 100%
rename from assembly/bios/tests/sndtest.asm
rename to assembly/os/tests/sndtest.asm