Line trace output (CS type 3)

Figure 1 shows an example of line trace output for a 3705 communication controller with a type 3 communication scanner. This trace record shows the operating status of a line each time an NCP buffer is filled, instead of each time a character is transmitted.

The trace fields are explained after the figure. Most fields in this record are similar to the example for the type 2 scanner, but the type 3 scanner has some additional fields. To determine what document contains detailed descriptions of the additional fields in CS type 3 output, see Table 1.

Figure 1. Example of line trace output (CS type 3)

LINE LINE01 LRC(000,000) INBOUND ACTIVE RNTIME=1D
  STATUS SCF LCD PCF EPCF STAT1 STAT2 TIME ADDR CNTL IOBLXB DISP ICW CCBLV
          44  9   9   00    00   01    80   03   71    30    AA   11  1BB2
  TEXT C0B4

In addition to several fields shown in the line trace for CS type 2, the following fields appear in the line trace for CS type 3:

Field header	Field contents
EPCF	The extended primary control field. These bits extend the meaning of the PCF.
STAT1	Status byte 14 of the ICW.
STAT2	Status byte 15 of the ICW.
TIME	This hexadecimal value indicates, in tenths of a second, the time elapsed between level-2 interrupts as they occur on the line interface as data is received. Level-two interrupts are represented by the data. The value of this timer is reset to 0 every 25.5 seconds.
ADDR	The SDLC frame address field.
CNTL	The SDLC frame control field.
IOBLXB	The 1-byte command field from the IOB/LXB control block.
DISP	DISP is byte 0 from the communication scanner display register.
ICW	Byte 13 of the interface control word.
CCBLV	CBBLV is the address of the level 2 interruption processor routine, taken from field CCBL2 in the NCP CCB control block.
TEXT	The contents of the NCP buffer being transmitted in both hexadecimal and EBCDIC.