Epson DM-M820, Technical Reference Manual

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Rev. I BIOS Functions 5-21
MR series Technical Reference Manual
IDE Primary
Master None
Auto
Manual Set the detection method for the connection device.
None:
The connection detection is not executed. It is treated as
disconnected software
Auto: Auto detection is executed. The information held by the device is
automatically applied.
Manual: The information set by the user is applied.
IDE Primary
Slave
IDE
Secondary
Master
IDE
Secondary
Slave
Access
Mode CHS
LBA
Large
Auto Set the access Method to the connected device. Note that when the device
detection method is set as “None” it cannot be changed.
CHS:
Access for the device is shortened with “Cylinder Head Sector
(Addressing) “having 1024 cylinders, 16 heads and 63 sectors.
LBA: Shortened with the Logical Block Addressing Method, the entire
memory area is divided into access units and those serial numbers
are used for accessing.
Large: This is the access method for extended CHS. When the number of
CHS cylinders exceeds the normal amount of 1024 cylinders, the
address is not accessible so the CHS is extended.
Auto: BIOS determines the optimum method based on the information
obtained by the device. The LBA method is normally used.
Capacity ----- This item indicates the memory capacity for the connection device. The
following differences occur, depending on the device detection method
used.
Auto:
The value calculated according to information obtained by the
device is displayed.
Manual: The value calculated according to information specified by the user
is displayed.
Cylinder ----- This item indicates the number of cylinders for the connection device. The
following differences occur, depending on the device detection method
used.
Auto:
The value obtained by the device is displayed.
Manual: The user can set the value within a range of 0-65,535 only when the
access method is set as “CHS”.
Head ----- This item indicates the number of heads for the connection device. The
following differences occur, depending on the device detection method
used.
Auto:
The value obtained by the device is displayed.
Manual: The user can set the value within a range of 0-255 only when the
access method is set as “CHS”.
Precomp ----- This item indicates the number of write compensation cylinders for the
connection device. The following differences will occur, depending on the
device detection method used.
Auto:
The value obtained by the device is displayed.
Manual: The user can set the value within a range of 0-65,535 only when the
access method is set as “CHS”. (When connecting a device for which
there is no particular value specified, a maximum value of 65,535 is
specified)
Item Options Notice