IBM 5280 Distributed Data System - Index of

Byte Bit Meaning if 13 Autu-dup/skip enable bit must be maintained by the applicationprogram. While this bit is 1, the 5280 automatically processesfields defined as auto-skip (AS) or auto-dup (AD). When thisbit is 0, these fields are treated as manual fields. When this bitis 1, a field defined as main storage store (MS) is stored; otherwise,it is not stored.4 Auto-enter enable bit must be maintained by the applicationprogram. When the bit is 1, the 5280 automatically performs arecord advance when the operator enters the last manual positionof a record format. If bit is 0, the 5280 puts the keyboardin the awaiting record advance state after the operator entersthe last position of the record.5 Alternate record advance bit must be maintained by the applicationprogram. If this bit is 1, when the operator presses theRec Adv key the 5280 ignores all remaining fields and formatspecifications. If this bit equals 0, the 5280 processes the remainingfields and format specifications.6 Rerun/display enable bit must be maintained by the applicationprogram. This bit is 1 and the 5280 is processing in rerun mode,display is enabled.7 An application program must not change this bit.FUNCTIONS NORMALLY HANDLED BY THE 5280The following function descriptions detail how each function is initiated and howthe 5280 processes the function. The function descriptions pertain to all modes ofentry unless a mode is specifically mentioned. Most functions are processed differentlyfor verify mode; the descriptions for verify mode follow the generaldescriptions of each function.Alpha Shift FunctionThe alphabetic shift function is initiated when the operator presses the Alpha key.The Alpha key is on the data entry and proof keyboards, and is valid at all times.While the Alpha key is pressed, the lower character on the key top is selected forany data key.Character Advance FunctionThe character advance function is initiated when the operator presses the ~(Character Advance) key, and is valid only while an ENTR command is beingprocessed.320