Floppy Disk Controller; Hardware Monitor - Eurotech Apollo User Manual

Floppy disk controller

The floppy disk controller (FDC) provides the interface between the host processor and
the floppy disk drives. It integrates the functions of:
•
Formatter/controller.
•
Digital data separator.
•
Write precompensation.
•
Data rate selection logic for an IBM XT/AT compatible FDC.
The true CMOS 765B core guarantees 100% IBM PC XT/AT compatibility in addition to
providing data overflow and underflow protection. The APOLLO allows for an interface to
a single slimline floppy drive using a 26-way flat flex cable. For connector details, see
page 50.

Hardware monitor

The APOLLO V1Ix board contains an SMBUS hardware monitor (HWM) that provides a
combination of voltage and thermal monitoring, a similar HWM is provided on the
APOLLO V2Ix board via a set of ISA mapped IO registers.
The table below summarizes the voltages and temperatures
The BIOS provides a Hardware Monitor screen (available from the Advanced menu in the
BIOS – see page 79). This shows system voltages, temperatures and fan speeds in real-
time. From this screen the PWM frequency and duty cycle for the CPU and system fans
can also be set.
Voltages
System voltage
CPU Core (0.7V – 1.7V)
+1.05V
+1.35V
+2.5V
+3.3V
+3.3V Standby
+5V
+12V
Temperatures
Component
CPU
Ambient
SuperIO
Issue G
Detailed hardware description
APOLLO V1Ix APOLLO V2Ix
APOLLO V1Ix APOLLO V2Ix
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