It has a 2732 EPROM labelled 8DE-1 a 6116 RAM and a NEC 8039H CPU.
The following ICs are labelled on the PCB: P1 = 74LS04 P2 = 74LS374 P3 = 74LS32 P4 = 74LS373 P5 = 6116 RAM P6 = 2003 P7 = 8039H CPU P8 = 2732 ROM (8DE-1) P9 = 7404 P10 = 74LS74 P11 = 8243 P12 = 2732 (NOT FITTED)
SW1 dipswitch (accessible on outside)
Image:DMP1_1.jpg|Printer
Image:DMP1_2.jpg|Printer with top open
Image:DMP1_3.jpg|Printer (backshowing centronics connector and DIP switches)
Image:DMP1_4.jpg|Printer (inside)
Image:DMP1_5.jpg|Printer PCB