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==== Table of Contents ====

[[#protoboard_iii|ProtoBoard III]]

[[#version|Version]]

[[#files|Files]]

====== ProtoBoard III ======

The ProtoBoard III is an 160x100mm EBC bus prototyping board that feature a generous through hole prototyping area and the typical bus buffering and address decoding required to implement an I/O peripheral.

Features:

Flexible 6-bit I/O address range selection

Pin headers for buffered address, data and control signals.

ECB bus pinout area for access to other ECB signals.

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The board may be constructed with either the 74LS682 (preferred), 74LS684, or 74LS688 chip. The last two require a strip of 22K bussed resistors; the first does not.

Note that the footprint for the second ECB connector is for access to ECB signal lines and is not suitable for connect to another ECB board through a female vertical connector.

====== Version ======

The current version is 17-10-05

Gerbers are here : [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_protoboard_17-10-05_mfg.zip|:boards:ecb:protoboard_iii:ecb_protoboard_17-10-05_mfg.zip]]

Kicad file are here : [[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_protoboard_with_io_decode_-_17-10-05.zip|:boards:ecb:protoboard_iii:ecb_protoboard_with_io_decode_-_17-10-05.zip]]

Please note errata for previous version [[boards:ecb:protoboard_iii:errata|here.]]

Respin consideration: Add +5VDC barrel jack connector, add mounting holes, add warning for installing ECB connect on ECB2.

====== Files ======

^Name                                                                                                                                                           ^Size ^Date       ^
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_proto_1606_17.pdf|Board Description]]                                   |770Kb|12-Mar-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_protoboard_iii_1606_sch.pdf|ProtoBoard III schematic]]                  |219Kb|21-Oct-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:protoboard_iii_parts_list.pdf|ProtoBoard III parts list]]                   |18Kb |12-Mar-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:protoboard_iii_parts_-_jameco.csv|Jameco Part numbers]]                     |1kb  |18-Feb-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_protoboard_1606_17_jpg.zip|Photos from Kicad]]                          |5.4Mb|02-Feb-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:ecb_prototype_iii_1606_17_kicad.zip|Kicad 4.4.0 project files]]             |625Kb|02-Feb-2017|
|[[https://retrobrewcomputers.org/lib/exe/fetch.php?media=boards:ecb:protoboard_iii:update_2017-10-04_board_1606_to_1710.pdf|ProtoBoard III errata - mandatory]]|24Kb |04-Oct-2017|

This board is licensed for hobbyist use only.

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