![](/images/backgrounds/292724/hp-hp-ux-11i-v1-i-o-cards-reference-guide-15276372x1.png)
ZCOM Tables and Data Structures
Physical Terminal Tables
The IN bit indicates whether the terminal is considered as part of the current configuration. It is initialized by TTGEN and maintained by the driver. The EN and AC bits represent the current status of the terminal. They are initialized by TTGEN and maintained by the driver. They are reflected in the opposite sense by DS and IA on the interface card and in
PTFWST.
When the ZCOM subsystem starts up, the driver sets the AV bit if the terminal is successfully initialized.
PTFWST - Firmware terminal status
This word contains the TMSTAT and TMSTT2 bytes from the Mux (via $STDT buffer)
Figure | Firmware terminal status PTFWST |
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| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| DS | SP | IA | GP | DN | DC | GA | GM |
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DS - Terminal is disabled
SP - Terminal is on slow poll list
IA - Terminal is inactive (no poll)
GP - Terminal is group polled
DN - Terminal is down
DC - Terminal downcounter expired
GA - Group poll active
GM - Group poll master
The status in bits
PTTYPE - Terminal type (physical)
Protocol module terminal type. It is initially setup by TTGEN in the memory image file but is subsequently maintainable.
SCFG_LEN - Length of the special protocol configuration bytes.
This field contains the length of any protocol specific configuration data contained in the spec_cfg[] field.
SPEC_CFG - Special protocol configuration data
This field contains any protocol specific configuration data that might be needed. The details on its contents and how to configure this field is documented in the protocol manuals.
72 | Chapter 3 |