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dioscuri.module.rtc
Class CMOS

java.lang.Object
 extended by dioscuri.module.rtc.CMOS

public class CMOS
extends java.lang.Object

Implementation of the CMOS memory

Notes: - register information is taken from CMOS Reference by Padgett Peterson, 2001. See: http://moon.inf.uji.es/docs/interr/CMOS/CMOS.HTM

Field Summary
protected static int AMI_EXTEND_MEM_HIGH
protected static int AMI_EXTEND_MEM_LOW
protected static int ATA_POLICY_0_1
protected static int ATA_POLICY_2_3
protected static int AWARD_HD1_USERDEF
protected static int CHECKSUM_HIGH_BYTE
protected static int CHECKSUM_LOW_BYTE
protected static int ELTORITO_BOOT
protected static int ELTORITO_BOOT2
protected static int FLOPPYDRIVE_TYPE
protected static int IBM_BASE_MEM_HIGH
protected static int IBM_BASE_MEM_LOW
protected static int IBM_EQUIPMENT
protected static int IBM_EXTEND_HD1
protected static int IBM_EXTEND_HD2
protected static int IBM_EXTEND_MEM_HIGH
protected static int IBM_EXTEND_MEM_LOW
protected static int IBM_EXTEND_MEM2_HIGH
protected static int IBM_EXTEND_MEM2_LOW
protected static int IBM_HD_DATA
protected static int IBM_PS2_HD1_DATA
protected static int IBM_PS2_HD2_DATA
protected static int IBM_PS2_RTC_CENTURY
protected static int IBM_RTC_CENTURY
protected byte[] ram
protected static int RTC_DATEOFMONTH
protected static int RTC_DAYOFWEEK
protected static int RTC_HOUR_ALARM
protected static int RTC_HOURS
protected static int RTC_MINUTE_ALARM
protected static int RTC_MINUTES
protected static int RTC_MONTH
protected static int RTC_SECOND_ALARM
protected static int RTC_SECONDS
protected static int RTC_YEAR
protected static int SHUTDOWN_STATUS
protected static int STATUS_REGISTER_A
protected static int STATUS_REGISTER_B
protected static int STATUS_REGISTER_C
protected static int STATUS_REGISTER_D
Constructor Summary
CMOS()
Class constructor
Method Summary
protected int bcdToDec(byte bcdValue)
Performs a conversion of bcd value into decimal.
protected byte decToBcd(int decimalValue)
Performs a conversion of decimal value into Binary Code Decimal (BCD).
protected java.lang.String getClockValue()
Returns string of decimal representation of time and date
protected void reset(boolean systemTime)
protected void setClockValue(int seconds)
Updates the clock values
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ram

protected byte[] ram

RTC_SECONDS

protected static final int RTC_SECONDS
See Also:
Constant Field Values

RTC_SECOND_ALARM

protected static final int RTC_SECOND_ALARM
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Constant Field Values

RTC_MINUTES

protected static final int RTC_MINUTES
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Constant Field Values

RTC_MINUTE_ALARM

protected static final int RTC_MINUTE_ALARM
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Constant Field Values

RTC_HOURS

protected static final int RTC_HOURS
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Constant Field Values

RTC_HOUR_ALARM

protected static final int RTC_HOUR_ALARM
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Constant Field Values

RTC_DAYOFWEEK

protected static final int RTC_DAYOFWEEK
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Constant Field Values

RTC_DATEOFMONTH

protected static final int RTC_DATEOFMONTH
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Constant Field Values

RTC_MONTH

protected static final int RTC_MONTH
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Constant Field Values

RTC_YEAR

protected static final int RTC_YEAR
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Constant Field Values

STATUS_REGISTER_A

protected static final int STATUS_REGISTER_A
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Constant Field Values

STATUS_REGISTER_B

protected static final int STATUS_REGISTER_B
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Constant Field Values

STATUS_REGISTER_C

protected static final int STATUS_REGISTER_C
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Constant Field Values

STATUS_REGISTER_D

protected static final int STATUS_REGISTER_D
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Constant Field Values

SHUTDOWN_STATUS

protected static final int SHUTDOWN_STATUS
See Also:
Constant Field Values

FLOPPYDRIVE_TYPE

protected static final int FLOPPYDRIVE_TYPE
See Also:
Constant Field Values

IBM_PS2_HD1_DATA

protected static final int IBM_PS2_HD1_DATA
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Constant Field Values

IBM_HD_DATA

protected static final int IBM_HD_DATA
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Constant Field Values

IBM_PS2_HD2_DATA

protected static final int IBM_PS2_HD2_DATA
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Constant Field Values

IBM_EQUIPMENT

protected static final int IBM_EQUIPMENT
See Also:
Constant Field Values

IBM_BASE_MEM_LOW

protected static final int IBM_BASE_MEM_LOW
See Also:
Constant Field Values

IBM_BASE_MEM_HIGH

protected static final int IBM_BASE_MEM_HIGH
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Constant Field Values

IBM_EXTEND_MEM_LOW

protected static final int IBM_EXTEND_MEM_LOW
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Constant Field Values

IBM_EXTEND_MEM_HIGH

protected static final int IBM_EXTEND_MEM_HIGH
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Constant Field Values

IBM_EXTEND_HD1

protected static final int IBM_EXTEND_HD1
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Constant Field Values

IBM_EXTEND_HD2

protected static final int IBM_EXTEND_HD2
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Constant Field Values

AWARD_HD1_USERDEF

protected static final int AWARD_HD1_USERDEF
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Constant Field Values

CHECKSUM_HIGH_BYTE

protected static final int CHECKSUM_HIGH_BYTE
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Constant Field Values

CHECKSUM_LOW_BYTE

protected static final int CHECKSUM_LOW_BYTE
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Constant Field Values

IBM_EXTEND_MEM2_LOW

protected static final int IBM_EXTEND_MEM2_LOW
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Constant Field Values

IBM_EXTEND_MEM2_HIGH

protected static final int IBM_EXTEND_MEM2_HIGH
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Constant Field Values

IBM_RTC_CENTURY

protected static final int IBM_RTC_CENTURY
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Constant Field Values

AMI_EXTEND_MEM_LOW

protected static final int AMI_EXTEND_MEM_LOW
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Constant Field Values

AMI_EXTEND_MEM_HIGH

protected static final int AMI_EXTEND_MEM_HIGH
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Constant Field Values

IBM_PS2_RTC_CENTURY

protected static final int IBM_PS2_RTC_CENTURY
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Constant Field Values

ELTORITO_BOOT

protected static final int ELTORITO_BOOT
See Also:
Constant Field Values

ATA_POLICY_0_1

protected static final int ATA_POLICY_0_1
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Constant Field Values

ATA_POLICY_2_3

protected static final int ATA_POLICY_2_3
See Also:
Constant Field Values

ELTORITO_BOOT2

protected static final int ELTORITO_BOOT2
See Also:
Constant Field Values
Constructor Detail

CMOS

public CMOS()
Class constructor

Method Detail

reset

protected void reset(boolean systemTime)
Parameters:
systemTime -

decToBcd

protected byte decToBcd(int decimalValue)
Performs a conversion of decimal value into Binary Code Decimal (BCD). Note: results only in a one-byte-value. Large unsigned integers (> 255) will be cut off. Example of conversion: int 22 will result in 0x22 (or 0010.0010).

Parameters:
decimalValue -
Returns:
byte containing the BCD value of decimal

bcdToDec

protected int bcdToDec(byte bcdValue)
Performs a conversion of bcd value into decimal. Example of conversion: 0x22 (or 0010.0010) will result in int 22.

Parameters:
bcdValue -
Returns:
int containing the decimal value of bcd

getClockValue

protected java.lang.String getClockValue()
Returns string of decimal representation of time and date

Returns:
String

setClockValue

protected void setClockValue(int seconds)
Updates the clock values

Parameters:
seconds - Number of seconds to update the clock
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