Oki Dr.63514, User Manual, Page: 47 / 101

Chapter 2. Functions
2-26
2.5.1 Trace Entries
Trace entries track the following data items.
Label Description Bits
ADRS Execution address 16
A Accumulator 4
RADR RAM address 12
RD RAM data 4
CGZ Flag register 3
MI Master interrupt enable flag 1
MD Melody request flag 1
CB Current bank register 4
EB Extra bank register 4
HL HL register 8
XY XY register 8
SP Stack pointer 5
RS Register stack pointer 4
XP External probe data 4
In addition to the above, the emulator also traces interrupt requests for post mortem analysis of
interrupts during real-time emulation.
2.5.2 Real-time Trace Control
Real-time tracing offers three operating modes and an option for limiting tracing to code memory
addresses with “1” in their trace enable bits.
Trace disabled
Free-running trace
With trace enable bits
Without trace enable bits
Trigger trace With trace enable bits
Without trace enable bits
(1) Trace disabled
No instructions are traced.
(2) Free-running trace
Instructions are traced for all code memory addresses—unless limited with the trace enable bit option.