Intel 386 Manual do Utilizador descarregar pdf (Página 197)

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Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL

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/* clear lowest two bits of pwrcon */

pwrcon = pwrcon & 0xfc;

/* Set mode to powerdown */

_SetEXRegByte(PWRCON, pwrcon | PWDWN);

/* call HALT instruction to execute POWERDOWN mode */

_asm {

HLT

}

}/* Enter_Powerdown_Mode */

/*****************************************************************************

Mode_Setting_To_Active:

Description:

This function returns the 386EX to Active mode. Thus, the next

HALT instruction will not invoke the Idle or Powerdown Mode.

Parameters:

None

Returns:

None

Assumptions:

None

Syntax:

Mode_Setting_To_Active();

Real/Protected Mode:

No changes required.

******************************************************************************/

void Mode_Setting_To_Active(void)

{

BYTE pwrcon = 0x00;

pwrcon = _GetEXRegByte(PWRCON);

/* clear lowest two bits of pwrcon */

pwrcon = pwrcon & 0xfc;

/* Set mode to active */

_SetEXRegByte(PWRCON, pwrcon | ACTIVE);

}/*Mode_Setting_To_Active*/

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