User`s guide

Technical Information
A/2 MASTER USER’S GUIDE
The card should work in a non-Apricot computer, but this cannot
be guaranteed. In a non-Apricot computer the system is less secure.
Without an infrared sensor, KeyLOC cards cannot be used, and
without BIOS support the security system can be by-passed by
removing the Security Card. In these situations, you should enforce
physical security by locking the computer’s system unit and keeping
the keys in a safe, secure place.
The card is installed in the same way as any other ISA expansion
card (see the computer’s Owner’s Handbook for instructions). The card
may have up to four alternative connectors for an internal infrared
sensor cable. In an Apricot LS340 or LS550 computer, use the 3-pin
IR2 connector.
Remove the SIN label from the card and record the SIN in a safe,
secure place together with the serial number of the card and the
serial number of the computer in which the card is installed.
The card does not require any manual configuration, although if the
computer supports PCI cards you may have to declare ISA Legacy
Resource usage in the computer’s BIOS Setup utility. The Security
Card’s base memory address is D000h (although only the area
between D8000h-E0000h is actually used) and its only I/O port
address below 3FFh is 259h. It uses no interrupts or DMA
channels.
Enabling BIOS reprogramming
If the Security Card is fitted in an Apricot computer with LOC
Technology BIOS support, BIOS reprogramming must be enabled
in order to use the security system. The security system will display a
warning dialog if BIOS reprogramming is disabled.
BIOS reprogramming is usually controlled by a jumper on the
motherboard. See the computer’s Owner’s Handbook for details.
Upgrading the BIOS
When the computer is turned on, the Security Card checks the
motherboard BIOS. If it is an Apricot BIOS that currently lacks
LOC Technology support, but which can be upgraded, a dialog