**High Resolution Photos of MPU302 boards**

{{https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=5bf106&media=https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:spx-mpu:adc_mpu_component_side.jpg?linkonly|Component side}} of a SPX-MPU

{{https://www.retrobrewcomputers.org/lib/exe/fetch.php?media=builderpages:plasmo:spx-mpu:front_annotated.jpg?linkonly|Annotated component}} side, The MSB/LSB of RAM, Flash are identified.  The 4 chip selects, nCS0-nCS3 and associated 330 ohm resistors are shown.