builderpages:plasmo:simple80:assembly_simple80r1_2 [RetroBrew Computers Wiki]

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====== Pictorial Assembly Guide for Simple80 Rev1.2 ======

Blank board, component side

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Blank board, solder side

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=af1ae8&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65250425.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65250425.jpg?direct&600x582|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_simple80_simple80r1_assembly_dsc_65250425.jpg}}]]

Resistors are all 4.7K except R17

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Capacitors are 0.1uF except C4 (10uF tantalum) and C13 (100pF ceramic)

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=32bbd4&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65270425.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65270425.jpg?direct&600x546|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_simple80_simple80r1_assembly_dsc_65270425.jpg}}]]

Install IC sockets. The spacing between U1 and U4 is tight, so slide socket for U4 away from U1 to create more space for jumper blocks between U1 and U4.

[[https://www.retrobrewcomputers.org/lib/exe/fetch.php?tok=c32070&media=https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65280425.jpg|{{https://www.retrobrewcomputers.org/lib/plugins/ckgedit/fckeditor/userfiles/image/builderpages/plasmo/simple80/simple80r1_assembly/dsc_65280425.jpg?direct&600x603|www.retrobrewcomputers.org_lib_plugins_ckgedit_fckeditor_userfiles_image_builderpages_plasmo_simple80_simple80r1_assembly_dsc_65280425.jpg}}]]

Finish up except CF adapter

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Board will boot and sign on without CF adapter.  However, it will hang waiting for CF disk ready.

Inserting a 4.7K resistor between D7 and GND as indicated with red arrows will enable boot to complete.

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