Ventilation - Panasonic JB-3300 Technical Manual

Ventilation
This computer is provided with a fan for ventilation. Air enters through
intake vents at the top of the plasma display unit, and also at the bottom
of the display unit, and is forced out the side of the system unit by the
fan. The following diagram illustrates the ventilation mechanism.
Air Intake
Air Intake
Exhaust
Figure 4-2 Ventilation Diagram
Memory Configuration
Standard memory configuration for the computer is: 256K-bytes RAM,
32K-bytes video RAM, and 16K-bytes ROM. This minimum standard memory is
called the 256K-bytes system.
Memory can be increased to 512K bytes with optional 256K RAM chips
inserted in the IC sockets on the CPU board. This is called the
512K-bytes system.
Memory can be increased further to 640K bytes with an optional 128K RAM
board (for PC or XT) inserted into the option slot.
Fiaqure 4-3 shows the memory map of both the 256K-byte and 512K-byte
systems.
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