I just spent an enjoyable day at the local ham fest with my father - digging through boxes of other peoples junk. I'm a sucker for weird electronics, especially when it's in the free pile, and so I am now the proud owner of two Parallel to Serial interface boards and I'm left wondering what they originally came out of.
The boards are populated with some intriguing chips (which is why I nabbed them); assuming my quick googling is correct - an EF6809P (an 8-bit MC6809 CPU), an EF6850P ACIA, three EF6821P PIAs, and an AMD AM9128-20PC static RAM.
So obviously the chip complement seems to support the board label as some kind of a parallel to serial interface, but to what? Below are some snapshots to hopefully help identify the board.
So, anyone having any brain-waves?