Xerox 96MX - Manual (Page 440)

OFFLINE SPECIFICATIONS
D-10 XEROX DOCUPRINT 96/DOCUPRINT 96MX LPS PDL REFERENCE
Sample layout of data (Interpress)
Figure D-5 represents the layout of data on tape for a simple print
request of one copy of the accompanying Interpress master.
Figure D-5. PKT HDR (Packet Header)
The dashed delimiters in the diagram above represent the
boundaries within the logical blocks. The solid delimiters represent
any required physical block padding and the inter record gap.
Tables D-2 through D-12 explain the diagram further.
Table D-2. PKT HDRa (Address logical block header
Hexadecimal
value
Meaning
FFFF Checksum (Don’t Check = FFFF hexadecimal)
0001 Protocol version # = 0.1 (zero in high byte; 1 in low
byte)
1002 Connection control (last packet of this data stream
type = 10 hexadecimal, in high byte); data stream
type in (logical address = 2, in low byte)
0014 Length of packet + data, in bytes
0000
0005
0000
0000
Source socket (zero = unknown)
Destination socket (socket # for Courier = 5)
Reserved for future use