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2.2 The IBM 7171 ASCII Device Attachment Control Unit - Index of

2.2 The IBM 7171 ASCII Device Attachment Control Unit - Index of

2.2 The IBM 7171 ASCII Device Attachment Control Unit - Index of

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B.9.4 Local Reset and <strong>Control</strong> Functions<strong>The</strong>re are six key sequences that are completely processed within the <strong>IBM</strong> <strong>7171</strong>,and are not passed to the host. <strong>The</strong>se sequences provide a way <strong>of</strong> controlling andclearing the data transmission to and from the terminal:CTRL and gCTRL and rCTRL and tCTRL and xCTRL and sCTRL and qMaster ResetCharacter Error ResetKeyboard UnlockType-ahead PurgePacing StartPacing stopB.9.5 Installation HintsUse the EIA RS-232-C Interface in full duplex mode with 7 data bits, 1 stop bitand 1 parity bit testing on even parity (See Note).<strong>The</strong>re are two 10-position switches S 1 and S2 located on the rear side <strong>of</strong> the TelevideoTVI-950.SI selects the transmission rate (baud rate), S2 selects the setting for parity. SeeFigure B-15 on page B-23 for appropriate setting <strong>of</strong> the switches and selection <strong>of</strong>baud rates.Note: Line speed and parity selection must conform with the specifications definedin the <strong>IBM</strong> <strong>7171</strong> Ports Area <strong>of</strong> memory for the appropriate communication line.Refer to section 4.4.2, "Ports Area Layout" on page 4-21.B-22 <strong>IBM</strong> <strong>7171</strong> Reference Manual and Programming Guide

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