Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-15

CHAPTER 2: INITIAL RESET

The above program is a basic initialization program for the

S1C62N82. The setting data are all initialized as shown in

Table 2.1.1 by executing this program. When using this

program, add setting items necessary for each specific

application. (Figure 2.2.1 is the flow chart for this program.)

Fig. 2.2.1

Flow chart of the initialization

program

Initialization

Reset

I (Interrupt flag)

D (Decimal adjustment flag)

Clear RAM

Set SP

Reset timer,

stopwatch timer

Enable timer interrupt

Enable input interrupt

Reset registers (X, Y, A, B)

flags (I, Z, D, C)

EI (enable interrupt)

Clear data RAM (00H to 08FH)

Clear segment RAM (90H to 0DFH)

Set stack pointer to 90H

Enable timer interrupt 2 Hz, 8 Hz, 32 Hz

Enable K03–K00 input port interrupt

To next process

Interrupt flag

Decimal adjustment flag