I have a S-100 based system that seems to mostly run, but I have some questions on the video card. It is a Polymorphic Systems card, but looks different from all the examples I could find on the internet Markings are: Polymorphic Systems (c) 1976 I.P.C VIDEO rev 0.0, with most chips aligned vertically The keyboard? port is a 14 pin DIP socket in the upper R.H. corner, next to a 8212 I/O chip. Between this and the VIDEO marking, there are some pads with heat damage that have the symbol for Zener diode across one of them. I have no idea what the component specs are for these pads. Also, 2 questions: does anyone have the DIP switch settings table for this card? 7 switches, currently set at 1 1 1 1 0 0 0 and (2) the 8212 interface makes me think that the keyboard is some sort of parallel interface, but the computer came with a DIP header connected to 3 wires (bonus question: this card has some jumper wires and a resistor soldered on the trace side of the PCB, is this official, or is this a hack? the joints look sort of "hacky" the resistor goes between +Vcc and pin 20 of the 6571AL, the jumpers are between some of the 74XXX gates on the L.H. side of the card [where the 7805 V.R. is]) found it at my church garage sale several years ago, so I can't "ask the owner" Scott Quinn