Circuit Description:
--------------------

PC parallel port (Standard 5 volt type only) to 3.3 Volt SPI device interface.
Primarily designed for SPILEP software to program SPI EEPROMs.


Power requirements:
-------------------

On board voltage regulator accepts wide range input 6 to 37V DC..


Parts List:
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Resistors:
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3 x 100 Ohm
1 x 200 Ohm
1 x 220 Ohm
1 x 330 Ohm
4 x 2.2 K 
5 x 4.7 K
2 x 10K

Capacitors:
-----------
3 x 100pf Ceramic
2 x 0.01uf Ceramic
1 x 0.1uf Ceramic
1 x 1uf Electrolytic

Diodes:
-------
1 x 1N5817 Schottky Diode

ICs:
----
1 x 74HC245 Buffer
1 x LM317T Vreg

Transistors:
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2 x BC548 General purpose NPN 
1 x BC558 General purpose PNP

Misc:
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1 x 20 Pin DIP IC socket for 74HC245
1 x 8 Pin DIP IC socket (preferably Turned Pin type)
