diff --git a/README.md b/README.md
index 4c00af9..d2a5dde 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-##6502
+## 6502
 # Main Board
 - Power
 - Interrupts
@@ -7,4 +7,7 @@
 - Clock
 
 # Clock Board
-# Arduino Interface
\ No newline at end of file
+# Arduino Interface
+
+## Bus Ideas
+- 74HC245, also possible for GPU buffer switching
diff --git a/datasheets/74HC_HCT245.pdf b/datasheets/74HC_HCT245.pdf
new file mode 100644
index 0000000..1be421d
Binary files /dev/null and b/datasheets/74HC_HCT245.pdf differ