1-9
FMT 3000 Hardware Reference Manual - Introduction
Functional Description
As seen in
on page 1-6, the unit is comprised of the following
functional sections:
t
The CPU area (CPU, memory, chipset, internal bus),
t
Communications port control (COM1-4 and LPT1 for the integral LCD display
interface),
t
PC/104 expansion interface,
t
Bar code section (which also interfaces COM3),
t
Keyboard control, PC Card (PCIMCA) interfaces,
t
Ethernet control and interface,
t
Power supply, speaker, and digital I/O option section.
These functional areas are described below.
CPU
The CPU is a low power 486-DX2 capable of running at 33 MHz with external bus
components and at 66 MHz internally. Being low power, the CPU clock can also be slowed
to reduce power consumption through internal power management functions. The CPU has
an internal write-through cache and math coprocessor to further enhance performance.
The CPU chipset has power management features that reduce or eliminate the need for
external hardware controls or software programming to monitor and control system power
usage. The chipset also has other I/O lines to enable or disable COM ports, LCD backlight,
the on-board speaker, the Ethernet adapter and other system components.
There are 4 volume levels that the speakers may be set to (LOW, MED, HIGH, Very High).
The volume level is set via “INT 2F interrupt” functionality described in Chapter 9, Custom
Function Reference,
of the FMT 3000 Software Manual.
Memory
The unit includes 1 MB of DRAM on-board. The on-board memory can be increased by
installing additional memory in the 72-pin SIMM expansion connector located on the unit’s
main board. The total system memory can be expanded from 1MB to 17MB (all possible
combinations are: 1, 2, 3, 5, 9, and 17MB total depending on whether a 1, 2, 4, 8 or 16MB
SIMM is added). The SIMM must be 70nSec or faster and operate in FPM (Fast Page Mode).