Contents
INTRODUCTION 4-3 Tracks
4-33
I/O
Devices
4-3 Files
4-33
The 5103 Printer
4-3
Records.
4-34
f~
The 5106 Auxiliary Tape
Unit
4-3 Tape Position Markers
4-37
Features
4-3 Tape
Motion
4-38
Serial
I/O
Adapter Feature
4-3
Forward Tape
Motion
4-38
Asynchronous Communications Feature 4-3 Reverse Tape
Motion
4-38
Katakana Feature .
4-4
Operations
4-38
Models
4-4
Mark
4-38
(
Functional Units
4-4
Find
4-39
Keyboard
4-4
Read
4-39
Display Adapter Card
4-4
Write
4-39
Controller
4-4
Rewind
4-39
Storage.
4-4
Backspace.
4-39
Base
I/O
Card .
4-4
Tape Adapter .
4-40
I/O
Cable Driver
4-4
Tape Adapter
I/O
Lines 4-41
Microprogramming
4-4
Error Checking
4-44
INTERNAL OPERATION
OF
THE 5100 .
4-5
DISPLAY.
4-45
5100 Internal Operation Diagram 4-6 Display Adapter .
4-45
5100 Data Flow and Parity Checking 4-7 Display Adapter Controls 4-46
Keyboard and Control Panel
4-9
TV
Monitor.
4-49
Switches and Controls
4-9
POWER
4-50
Lights.
4-10
AC Power Box
4-50
Keyboard Data Flow .
4-10 Power Supply
PC
Board
4-51
Keyboard Operation
4-10
DC
Power Distribution .
4-51
Keyboard Code Translation 4-10
Power Supply Protection
4-51
(
Key Functions 4-11 Referenced Voltage
4-51
Keyboard Error Checking
4-12
5100 OPERATIONS 4-52
Microprogramming 4-12 Power On Procedure, Initialization, and
CONTROLLER 4-15 Bring-up Diagnostic
4-52
5100 Controller Data Flow 4-15
I/O
Operation and Data Transfer
from
Keyboard
5100 Controller Description
4-16
to
Display and Printer
4-52
Storage Read Bus and Storage
Write
Bus
4-16
Data Bus In 4-16
Data Bus
Out
4-16
Storage Address Bus 4-16
Internal Controller Organization
4-16
Machine Cycles 4-17
Interrupts 4-17
Error Checking .
4-18
I/O
Data Flow Control 4-19
(
Read
Only Storage 4-19
Read/Write
Storage 4-23
Storage Data Flow 4-25
Storage Address Register 4-26
Storage
Read
Bus
4-26
Storage
Write
Bus
4-26
Storage Error Checking
4-26
Base
I/O
Card .
4-26
(~
I/O
Cable Driver Card
4-27
TAPE
4-28
Tape
Unit
Overview
4-28
Tape Data Flow
4-29
Tape Operations
4-29
Tape Drive Components . 4-29
(
Tape Cartridge .
4-31
Tape
Writing
and Formatting 4-32
Contents
4-1
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