Firmware of the Commodore 1526 printer with Finnish character set. It contains a string "COMMODORE MODEL MPS-802 PRINTER - REV 07B". This 2564 EPROM chip was installed on a 24/28 pin ROM/EPROM pinout adapter and the label has the text:
Firmware of the Commodore 4023 IEEE-488 printer. Except for the interface this printer seems to be the same as the 1526/MPS 802. The 2764 EPROM containing the firmware is labeled: 4023 /P 360-02 This EPROM is installed on a 24/28 pin ROM/EPROM adaptor.