The address must be wired using pull- up and pull- down resistors. There are 64K internal pull- up
resistors in the protocol chip, so only external pull- down resistors of 4.7K are required. The
Hardwire Address is read and loaded into the terminal at Power- On Reset, Hardware Reset, and
Software Reset.
The terminal address can be changed at any time through software by writing a new address to
the Basic Status Register, however, if any of the above resets occur, the Hardwire Address will
be re- loaded into the terminal. The software address can be locked out by setting Bit2 in
Configuration Register 1.
4.0.0
DATA STRUCTURE
4.1.0
ADDRESS MAP
The NHi- RT appears to the host as 16K words of memory divided into the following blocks:
ADDRESS RANGE
0 -- 30
31
32 -- 35
64 -- 16383
DESCRIPTION
INTERNAL REGISTERS
I/O TAG WORD
I/O SPACE
SHARED RAM
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