Eurotech Apollo - Floppy Disk Controller; Hardware Monitor

Detailed hardware description
Issue G 111
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 APOLLO V1Ix APOLLO V2Ix
CPU Core (0.7V – 1.7V)
9 9
+1.05V
9 8
+1.35V
9 8
+2.5V
9 9
+3.3V
9 9
+3.3V Standby
9 9
+5V
9 9
+12V
9 9
Temperatures
Component APOLLO V1Ix APOLLO V2Ix
CPU
9 9
Ambient
9 9
SuperIO
9 9