27C16B EPROM - compatible with 2716, and most 2316, 2516, and 6316. 24-pin 2KiB capacity (16K x 8) Suitable for replacing the EDIT ROM, Character Generator ROM, or any of the "lower" ROMs in a 2316-equipped PET 2001, where pin-20 CS is active-low. Not compatible with 6540-equipped PET 2001. Can program any custom image. Just ask at checkout or via email after ordering.