HP 64751 User Manual page 234

Chapter 7: Using the Emulation Analyzer
Qualifying Trigger and Store Conditions
Trace Signal
Signals Name
0-31 A0-A31
32-47 D0-D15
64 BKG_L
65 FC0
66 FC1
FC2
67
68 R/*W
69 SIZ0
70 SIZ1
71 CS_BYTE_L
72 DS0_L
73 DS1_L
74 BERR_L
75 HALT_L
76 CODE_L
77 FLUSH_L
78 FC3
79 CS0_L
234
Emulation Analyzer Trace Signals
Signal
Description
Address Lines 0-31.
Data Lines 0-15.
Background Debug Mode (BDM) active. This signal is used to qualify
the analyzer clock for tracing only foreground or only background cycles.
Function Codes 0-2. These lines to the analyzer are derived from the
68340 processor's function code lines. The function code meanings are:
001 - User Data Space
010 - User Program Space
101 - Supervisor Data Space
110 - Supervisor Program Space
111 - CPU Space
Read/write signal.
Number of bytes remaining to be transferred.
Chip select byte/word signal.
Data size acknowledge. Note that the 68340 SIM can be programmed to
internally generate the DSACKx signals for external accesses; in this
case, the DSACKx values do not show up on these trace signals.
Bus error active.
Halt active.
Instruction execution active.
Instruction pipeline flush active.
Function code 3. This can be set by the 68340 DMA controller for
DMA transfers; however
Chip select 0 active.