Rockwell Automation 6008-SI IBM PC I/O SCNNR 6008-SI - Manual (Page 22)

Chapter 3
Installation
3-4
Despite IBM recommendations to the contrary, some resident software
uses the system timer hardware interrupt, number 8, rather than the
follow-on described in the preceding paragraph. The scanner may work
erratically or may fail to work at all if such programs are active when a
scanner program is started.
I/O Ports
The scanner does not use any I/O ports.
RAM Address
DIP switches on the scanner board let you configure it to any starting
address in RAM, from 0400(hex) to FC00(hex), in increments of
4000(hex) = 16 K bytes. (The scanner cannot be configured to operate in
extended or expanded memory.) The scanner board occupies 1801(hex)
(6K+1) bytes beginning at the address you select. You are responsible for
selecting an address that starts at a free 6K+1 byte range.
The documentation for each of your add-on boards should tell you which
addresses (if any) it uses in system RAM. In addition, we can tell you
about the following common memory uses:
monochrome display memory: B000(hex)-B7FF(hex)
color/graphics display memory: B800(hex)-BFFF(hex)
Enhanced Graphics Adapter memory: C000(hex)-C3FF(hex) for the
BIOS, plus an area that could be as large as A000(hex)-BFFF(hex),
depending on the display mode
hard disk BIOS (on the PC XT, not the PC AT):
C800(hex)-CBFF(hex) for the first controller, CC00(hex)-CFFF(hex)
for the second controller if a second one is installed
cartridge ROM reserved area: E000(hex)-EFFF(hex) on some systems
ROM BIOS: F000(hex)-FFFF(hex)
Use the above information, and documentation from the manufacturers of
your add-on boards, to select an area of memory that is available for the
scanner. During the installation process you’ll set switches according to
the memory area you select.