Fluke 9000A-Z80QT Instruction Manual page 23

3-7.
Bit Assignment
There are two troubleshooting functions which require the entry
to identify user—writable
toggle control.
When performing
for a binary
prompted
BUSAK or HALT. Table
and
respectively. To
1
any of the following four bit configurations
the status lines, bit number
writes
00
writes
01
writes BUSAK low and
10
writes both lines high
11
If any control
line cannot
with the message CTRL
that
line cannot
be
HALT line can
be
mainframe displays the message
line represented by bit number
is
that
a control line
in
English
When performing a BUS TEST and various other mainframe operations, the
9000 Series mainframe message CTL ERR
represents a binary number
x
represents the ability to drive a line, while a binary
A binary 0
inability to drive
a
numbers.
3-8. Address Space Assignment
The 280
is
capable
0
locations. The mainframe uses a consistent technique
65,536 I/
multiple memory and
order
In
to access one
hexadecimal
address in the range of 0000 to
0
locations, the user provides a hexadecimal address in the range of
l/
lFFFF.
For
convenience, these assignments are also summarized on the pod
decal
Lines
Control
-
control lines. These functions are write control and
programming either of these two
or
number
to identify the
that
shows
3—2
perform a write control
at the far right of the display.
0 is
m
both
lines low
high and
H—ALT
driven, the 9000 Series mainframe responds
be
ERR
xxxxxxxx
@
For
driven. example, if in the write
the
driven, but
CTRL ERR
(A 9100 series mainframe displays
0.
cannot
be
that
identifies which lines can
line. Table lists all control lines and
3-2
of
addressing up to 65,536 memory
[/0
locations.
of
the 65,536 memory locations, the user provides a
functions,
control
1ine(s)
these lines are assigned to bit numbers
operation on these two
in response to the prompt.
m
low
high
LOOP?, where x equals
control
BUSAK line
cannot,
00000001 LOOP?. The BUSAK
@
driven.)
xxxxxxxx-LOOP?
FFFF. order
In
ZBOQT
of
binary digits
data
the user
is
to
be written,
0
enter
lines,
with
As
if
abinary
I
operation, the
the Series
9000
a
message
can occur, where
or cannot driven.
be
represents the
1
their
respective bit
locations
and up to
of
addressing
to access one of the
to
10000