Tal:
>I found this circuit and I have some questions, please help if you can:
>
>1. Can you identify the nameless ic on the left side of the pic?

Looks like a quad NAND gate - maybe a 4011 or similar.

>2. As you see in the circuit the pic is 16c54, but the Hex file that came
>along with the circuit regards to 16f84. are they the same pin outs / code?

Pinouts are the same. Code should be very similar. (RAM addresses,etc)
David...

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