Hi Cosmac experts, recently I got hands on a Cosmac 1802 Evaluation Kit Rev 2 (CDP18S020). There is a a "Cosmac CDP18S021 Micro Terminal" as well. I want to restore this kit and would be very happy to get hands on a user manual with schematics for this! Google did not bring up the desired result. In powering up the unit, the 1802 executes "Wait for DMA or IRQ (0x00)" permanently and thus the micro terminal stays black as well. There is a firmware ROM CDPR522 on the unit and all datasheets are available on the www. Only the chip labeled "RCA 640" within the micro terminal are mystic, but a schematic might help here, too. Any hints where to get the user manual or a copy of it? Best regards, Erik.