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DM5806 датащи(PDF) 13 Page - List of Unclassifed Manufacturers |
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DM5806 датащи(HTML) 13 Page - List of Unclassifed Manufacturers |
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13 / 64 page ![]() 1-1 CHAPTER 1 BOARD SETTINGS The DM5806 board has jumper and switch settings you can change if necessary for your application. The board is factory- configured with the most often used settings. The factory settings are listed and shown on a diagram in the beginning of this chapter. Should you need to change these settings, use these easy-to-follow instructions before you install the board in your computer. Note that DIP switch S2 has been provided to bypass the Port C buffers and allow Mode 1 operation of the 8255. Also note that by installing resistor packs at four locations near the 8255 PPI and soldering jumpers in the desired locations in the associated pads, you can configure your digital I/O lines to be pulled up or pulled down. This procedure is explained at the end of this chapter. |
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