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Dove lOP Board
7.3 .4.1
Preambles and postambles
7-17
7.3.4.2
Sectors
7-18
8.
RS232C Controller
8.1
Hardware
8-1
8.1.1
Serial controller
8-1
8.1.1.1
Controller
8-2
8.1.1.2
Timer
8-4
8.1.2
Interfaces
8-6
8.1.2.1
System interface signals
8-6
8.1.2.2
8274 interface ports
8-7
8.1.2.3
Interface connectors
8-9
8.1.3
Serial channels
8-10
8.2 Theory of Operations
8-11
8.3 Programmer Interface: Registers
8-12
8.3.1
External registers
8-12
8.3.2
8274 serial controller registers
8-13
8.3.2.1
Write registers
8-13
8.3.2.2
Read registers
8-17
8.3.3
8254 timer registers
8-18
9.
Keyboard/Mouse Controller and Maintenance Panel
9.1 Hardware
9-1
9.2 Theory of Operations/Programmer Interface
9-2
9.2.1
Keyboard and mouse interface
9-2
9.2.2
Registers
9-3
9.2.2.1
Command registers
9-3
9.2.2.2
Status registers
9-5
9.2.3
Maintenance panel
9-6
9.2.3.1
Normal commands
9-7
9.2.3.2
Special commands
9-7
10.
Debugger Interface
10.1 Hardware
10-1
10.1.1
Interface connector
10-3
10.1.2
Programmable peripheral interface (PP[)
10-4
10.1.3
Line
drivers
10-4
Table of Contents
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