IBM 5280 Distributed Data System - Index of

How to Start the Display IAlter FunctionDuring Power-on Checkout and IPL: Press the L key on any keyboard while thecursor is moving through the power-on checkout display.After Power-on Checkout and IPL: You must use keyboard 0; press the Cmd key,then the L key (the keyboard buzzes).After you have started the display/alter function, if you are using a proof keyboardor a dual display, press and hold the shift key and press the C key (the keyboardbuzzes). Release the shift key, then enter one of the following:01-Nonproof keyboard and dual display10-Proof keyboard and single display11-Proof keyboard and a dual displayA line of data is displayed on the bottom of the screen as follows:E2E8E2C9 ...Ge Main storage page number of data displayed, or an asterisk (*) if keyboard/display storage data pointer is displayed; set to 0 when the display/alter isstarted.GAddress of the first byte of data displayed. The address is set to 0000 when thedisplay/alter is first started.• Data: Displayed in eight 4-byte groups.Pointers Maintai~ed for Display IAlterThree pointers are maintained for the display/alter function. The pointers indicate:(1) the main storage address (the address of the data being displayed on the screen),(2) the base address, and (3) the keyboard/display storage address.How to Terminate Display IAlterTo terminate the display/alter function, press and hold the numeric shift key onthe data entry/proof keyboard or the upper shift key on the typewriter keyboardand press the E key. Then press the Error Reset key.304