IBM 5280 Distributed Data System - Index of

Global Configuration TableTne address of the giobai configuration tabie is at hexadecimal EA, EB in mainstorage. This table contains information about the printer for the printer microprocessor.There are two header bytes, followed by an 8-byte entry for each printerconfigured. Hexadecimal F F F F indicates the end of the table. The following is theformat of the 2 header bytes, and of the 8-byte entry.HexDisplacementLength inBytes (inHex)2DescriptionHeader Bytes:Byte 1The address of the printer lOB pointer(hexadecimal 0080).Byte 2BitsMeaning0-3 The number of entries in the configurationtable minus 1.4-7 The length of a table entry minus 1 (hex 7).8Printer Entry:Byte 1Bits0-23-45-7Bytes 2-3Byte 4Device subaddress.MeaningSystem use only.Printer port number.Printer station address.Displacement into the table to this entry(must be nonzero).Table length (hexadecimal 14).Byte 5Byte 6Byte 7Byte 8Printer error encoding type:AO = Bit encoding20 = Byte encodingMust be zero.Number of 128-byte blocks in printer buffer(hex 02).Must be zero.36