IBM 5280 Distributed Data System - Index of

70 Positions Remaining in Current Record Buffer Normal Display High Inten- Microprocessor Savethe Field Position Attribute sity Display AreaAttribute2 2 3.4,7 3.4.7 278 EBCDIC for Address of Partition EBCDIC for EBCDIC for Micropro- Micropro- MainBlank Check Screen Format Control Verify Mis- Duplication cessor Save cessor Work Micropro-String Table match Mismatch Area Area cessor Lock-3.4.7 3.4.7 2 2 2 2 out 21. An application program can change this field at any time.2. An application program should not change this field.3. Normally, an application program will not change this field.4. An application program can change this field, but only when an ENTR command is not being processed.5. See field descriptions for restrictions.6. An application program can change this field, but only when an ENTR command is not being processed or whenEXTR processing is suspended, such as during external status processing (before a resume is issued).7. Initialized by the assembler.8. Initialized during IPL.9. Initialized by the program loader.HexDisplacementLength inBytes (inHex)Description00 108 System Status:Bitrs)Meaning0-1 11 = Main microprocessor sent a command to thekeyboard/display microprocessor: It cannotsend another until the keyboard/display microprocessorsets the bits to 00.01 = Keyboard/display microprocessor acceptedthe command; however, processing is not yetcomplete.00 = No .command pending.2 1 = Keyboard/display microprocessor is awaitingan operator response to a keyboard operation.The keyboard/display microprocessorsets this bit on if bit 4 of this byte is on andthe operation code is hexadecimal 09 (placekey-entered data in main storage).3 External status sensed; the keyboard/displaymicroprocessor sets this bit to 1 when itsenses an external status condition. Themain microprocessor clears the bit when itbegins processing the external status. Seealso bit 7 in this byte.4 Main microprocessor has requested a keyboard/displayoperation. The keyboard/display microprocessor clears the bit after itcompletes the operation.Main Storage Data Areas 59