Epson S1C62 Family (1)When execution of the trace instruction (T,U) is prolonged, (2)When the run is halted and restarted, 2.3.12Starting the printer, #BA,100, #"CTRL"+"P

ICE CONTROL SOFTWARE ICS62XX

2.3.12Starting the printer

The printer is controlled by the operating system. The printer can be started and stopped by entering "CTRL"+"P" key even while the ICS62XX system is running.

#BA,100

#"CTRL"+"P" T	. . . The monitor display following the "CTRL"+"P" key input is printed.
PC=300 IR=FFF	. . . SP=010
:
:	. . . Stops the printer
#"CTRL"+"P"

2.3.13Limitations during emulation

When running emulations with the ICE and evaluation board connected, the evaluation board CPU is normally stopped, as described in Section 2.3.1, "Operating features" (set up mode).

In the set up mode, the evaluation board CPU and peripherals are stopped, and inappropriate operations cannot be initiated. Until the set up mode is canceled and the target program is executed, the evaluation board CPU executes instructions provided by the command program of the ICE. The command program continues to operate when the emulation is completed and returns to the set up mode.

CPU operation

(Evaluation board)

	About 30 step	About 30 step
Prepare mode	Execute the emulation	Prepare mode
	(Running the target program)
(CPU halt)

Fig. 2.3.13.1 Evaluation board CPU operation

You should be aware that when the command program takes over, the timers and counters are enabled and started from initial settings. Also, the watchdog timer is cleared immediately prior to the ICE switching to emulation mode while under command program control.

Accordingly, the following points should be noted when using the ICE.

(1)When execution of the trace instruction (T,U) is prolonged

Evaluation board timer values can be renewed while the command program is operative.

(2)When the run is halted and restarted

The watchdog timer is cleared by the ICE before and after the emulation, thus the watchdog timer is not continuous. The target program operates in real time when the run time is sufficiently long.

The command program runs approximately 30 steps before and after an emulation. When operating at 32 kHz clock speed, these steps require 6 msec + 6 msec = 12 msec. While at a clock speed of 455 kHz, the command program steps before and after emulation require 400 µsec + 400 µsec = 800 µsec.

When the dump data command (#DD) is invoked, the I/O area interrupt condition flag is read but not cleared.

S1C62 FAMILY	EPSON	VIII-17
DEVELOPMENT TOOL REFERENCE MANUAL