Intermec 6100 Reference Guide

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For warm booting, the 6100 Computer must be booted before and still have powĆ

er applied to it from either batteries or a charger.  To warm boot, press the reset

switch.  This reinitializes the hardware and software.  POST procedures are reĆ

executed and ROM DOS restarts.
See Figure 1Ć1, Location of Reset Button and PC Card Drives on page 1Ć17, in the

Getting Started section, for the location of the reset button.
If a RAM drive is formatted, the data on that drive is still there, unchanged by

the reset cycle.  The rest of memory is reconstructed as part of the tests perĆ

formed.  For example, the extended memory (which was not allocated to the

RAM drive) is reset when extended memory is tested.  The amount of extended

memory reported does not include memory allocated to the RAM drive.  If all exĆ

tended memory is allocated to the RAM drive, the clicking associated with the

extended memory test is not heard and 0K of extended memory is reported.

A Master Mode boot is the process of booting from a PC Card rebooting and reĆ

flashing with a functioning version of flash, to replace the information in flash

memory (reflashing), for a PEN*KEY 6000 Series handĆheld computer that does

not have a functioning version.
A Master Mode boot cycle differs from a standard boot cycle in that the BIOS

code copied to shadow RAM comes from a PC Card instead of from flash memory.

In addition, drive B: is temporarily used as the default drive.  In that way,

CONFIG.SYS and AUTOEXEC.BAT are executed from the PC Card instead of

any startup files in flash memory or on the RAM drive.
The Master Mode boot process also affects the drive B: support provided by the

ROM BIOS.  Since drive B: now refers to the same data as the ROM drive (D:),

drive B: is writeĆprotected by the BIOS.

The 6100 Computer always boots to DOS from ROM, (that is, it never loads

IO.SYS and MSDOS.SYS from a boot drive).  CONFIG.SYS and

AUTOEXEC.BAT files are read from the default drive whenever the files are

present.  The default drive used to load these startup files is controlled by a

CMOS variable.  Two bits of this variable define a drive that could possibly be

used as the default drive.  One bit determines whether a Master Mode boot is

performed.  If the Master Mode boot bit is set, the other two bits are ignored and

the default drive is B:.  If the Master Mode bit is not set, the other two bits

define a drive that could possibly be used as the default drive.
Before a default drive is selected, a driveĆready test is performed.  If media is

present and the drive is ready, it becomes the default drive.  Note that this test

applies only to drives A: and B:, since they are the only drives associated with

removable media.  When the default boot drive is not ready, the ROM drive is

selected as the default drive.  To obtain the ROM DOS bootĆup menu, press and

release the [Suspend/Resume] key after resetting the unit.
Use the Start from" menu to override the CMOS setting by manually selecting

the drive that is the default drive.  This menu is available even during a Master

Mode boot.  The drive selected at the Start from" menu is still tested to ensure

that it is ready before that drive is selected as the default drive.  If the selected

drive is not ready, the flash drive (D:) is used instead of the selected drive.  See

Setup for PC Development in the Getting Started section for more information on

the Start from" menu.