Heathkit ET-6800 CPU Trainer question

[Peter A Markavage]

IC 104  part #443-807  74LS42
IC 102  part #443-807  74LS42
IC 103  part #443-720  40097
IC 117  part #443-720  40097


On Sun, 15 Feb 2004 13:53:50 -0800 DataPro <Don at D8APRO.COM> writes:
> Wondering if anyone out there can help me on this one.  I have the
> ET-6800 and someone has pulled all of the IC's out of the board.  I
> don't have the manual for this one, but I do have the manual for the
> ET-3400.  I've figured out most of them (the 40 pin 6802 was easy)
> except for the following:
>
> IC 104
> IC 102
> IC 103
> IC 117
>
> These are all 16 pin sockets and could either be 74LS42's or CD40097
> hex buffers.  I have two of each left over.  The schematic is
> similar to the ET-3400, but not exactly.

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