diff --git a/hash/hp9845b_rom.xml b/hash/hp9845b_rom.xml
index 371a50b2eb4..486175f032f 100644
--- a/hash/hp9845b_rom.xml
+++ b/hash/hp9845b_rom.xml
@@ -110,6 +110,29 @@
+
+ I/O (Rev B)
+ 198?
+ Hewlett-Packard
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
I/O PPU (Rev C)
198?
@@ -346,4 +369,16 @@
+
+ Mass storage (rev A)
+ 1983
+ Structured Software Systems
+
+
+
+
+
+
+
+