SECTION TWO 
 
THEORY OF OPERATION 
 
 
2.0 OVERVIEW 


The section discusses in general the components which make up the
Falcon system and how they interrelate with one another. This 
will give you a basic working knowledge of the system's
architecture necessary to repair most hardware failures which may
occur. Other sections are provided in this manual to aid in use
of diagnostics and troubleshooting techniques. The system is
divided into three main categories. Main system, Audio/Video
Subsystem, and I/O Subsystem. Each category will be covered
separately along with any other components that may lie outside
that section as it relates to that sections function within the
system. 
 

2.1 MAIN SYSTEM 


The main system architecture of the Falcon is comprised of the
following major components:

MC68040 Microprocessor @ 33MHz
512 Kbytes of system ROM
2 Mbytes of dual-purpose system RAM
MCU (Memory Control Unit)
	Memory Control
	Refresh Control
	Bus Timers
IOCU IC
	Interrupt Control
	Interrupt Mask and Current Status
	System Control
	Interrupt Generator
Real-Time Clock

2.1.1 MC68030 Microprocessor 
2.1.1.1 MC68030 Pin List and Signal Description
2.1.2 MC68882 Coprocessor 
2.1.2.1 MC68882 Pin List and Signal Description
2.1.3 ROM 
2.1.4 System RAM 
2.1.4.1 System Memory Map