User`s guide

To display the configuration labels and symbols
• Select the "Symbols" field on the format specification menu and then
choose a label name from the "Label" pop-up. The logic analyzer will
display the symbols associated with the label.
The HP E2456A configuration software sets up symbol tables on the logic
analyzers. The tables contain alphanumeric symbols which identify data
patterns or ranges. Labels have been defined in the format specification
menu to make triggering on specific MC68306 cycles easier. The label base in
the symbols menu is set to hexadecimal to convserve space in the listing
menu.
Table 3
MC68306 STAT Label Bits
Bit Status
Signal
Description
0 R/~W This signal is high for read cycles and low for write
cycles.
1
2
~LDS
~UDS
These active-low signals are the lower and upper
data strobes for data bus control.
3 ~RESET If asserted externally, this signal resets the
microprocessor. When asserted internally, all
external system devices are reset without affecting
the internal state of the processor.
4
5
6
FC0
FC1
FC2
These three signals indicate the type of cycle the
microprocessor is executing.
7 ~BGACK For 3-wire bus arbitration, this signal is low when the
microprocessor has given ownership of the bus to
another device. In a 2-wire bus arbitration system,
this signal is always high.
Analyzing the Motorola MC68306
To display the configuration labels and symbols
MC68306 Preprocessor 2–5