ExpandedMode.c

extern volatile char DATAH, DATAL;

void main(void){
    /* Set bus clock to 24 MHz */
    /* Setup Dbug12 does*/
    asm(" sei;");
    CLKSEL &= ~0x80;
    PLLCTL |= 0x40;
    SYNR = 0x05;
    REFDV = 0x01;
    while ((CRGFLG & 0x08) == 0) ;
    CLKSEL |= 0x80;

    MODE = 0xA8 /* Normal Expanded Narrow mode, internal visibility */
    PEAR = 0x2C /* PIPOE, enable E-clock, LSTRB, R/W */
    MISC = 0x03 /* No clock stretching, turn of EEPROM, DBug12 @ 8000-FFFF*/
    EBICTL = 0x01;  /* Use E-clock to control external bus */
    EnableInterrupts;
    for(;;)
}

void write(char addr, char dataH, char dataL){

    PORTB = addr;
    PORTA = dataL; /*Only take lower paramter and pass*/
    PORTE_BIT2 = 0; /* R/W assert low for write*/

}

void read(char addr){
    PORTB = addr;
    PORTE_BIT2 = 1 /* R/W assert high for read*/
    DATAL = PORTA;

}