Don -

That sounds like the "Earlier" V2 board.  The later run I had fabricated 
doesn't have any code, and also has jumper JP10 added.

1K resistor nets worked fine for me.

Unicorn Electronics carries the 7805 in TO-3 format.  You can also use 
LM309 or LM323 - both of which came in a TO-3 format.

Jameco carries the LM323K

Mouser carries the LM309K and LM323K, but sit down before you look at the 
price.

Don't order LM323K from China unless you like counterfeit IC's.

- Gary


On Saturday, November 22, 2014 8:52:17 PM UTC-5, Don Caprio wrote:
>
> I'm not sure which version of John's Z80 board I have. 
>
> Couple questions: 
>
> 1) Can the 1.1K Resistor nets be substituted with 1K ? 
> 2) Where in the world do I get the 7805 in the TO-3 package? Tried 
> mouser, Jameco, digi-key. 
> 3) How do I tell what version of the board I have? I see UL code: 
> E336755 GC-D1 94V-0  0512 
>
> Cheers! 
>
> -- 
> Don Caprio 
> [email protected] <javascript:> 
>
>

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