Remote Human Interface - HP 9000 Series 310 Service Information Manual

Remote Human Interface
Very early in the Power-Up Sequence, a search is made for one of the following interfaces with
its "remote" switch set:
• HP 98642 (4 port, multiplexed RS-232),
• HP 98626 RS-232 Interface Card
• HP 98644 RS- 232 Interface Card
The search starts at select code () and ends at select code 31 or when one of these remote cards
is found that passes self-test. If one is found, it becomes the Remote Human Interface. If the
Remote Human Interface is an HP 98642 card, the the terminal on port 1 will be used as the
console. All other ports are ignored by the Boot ROM.
NOTE
Note that the 98561-66511 processor board or 98561-66530 Human In-
terface Card with on-board RS-232 interface is treated as an HP 98644
RS-232 interface card by the Boot ROM.
To indicate that a remote human interface has been found (at, for example, select code 9), the
first line of the internal display, if present, will display:
Remote Interface at 9
After this point the internal display will not change until a system is booted. Any internal or
external keyboard, if present, will work just as it would if there were no remote console (see
previous section for details).
To use the remote interface, an 80 wide terminal with at least 24 lines that accepts the following
HP standard terminal escape sequences is required:
Terminal Escape Sequence
Escape H Escape J
Escape &aDDY
Escape &aDDC
Display Activity
Clear Screen and reset cursor
Move Cursor to Row D D
Move Cursor to Column D D
Boot Rom Functions
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