HP 300

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102

Boot Rom Functions

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Table of Contents6
Product Information12
Introduction12
Product Nuinbers and Terms12
Product Identification Terms12
Hardware Terminology13
Software Terminology14
Hardware Documentation Organization15
HP Series 200/300 Cornputer Test Tools Manual15
HP 9000 Series 300 Coinputer /Bus Expander Service Information Manual16
HP 9000 Series 300 Coinputers Configuration Reference Manual17
Series 300 Service Notes17
Series 300 Service Handbook18
HP 9000 Series 200/300/500 Site Preparation Manual19
Installation Notes20
Series 300 Installation Reference20
Product Number Conventions21
Series 300 Computer System Configurations23
Determining Computer System Numbers26
Determining Bundled System N Unlbers27
Specifications28
Physical28
Power Line Voltage and Frequency28
Backplane Power Available28
Environmental29
System Clock29
Shipping Information29
Service Support30
Repair Philosophy30
Supported Configurations30
Hewlett Packard Support30
Assembly Replacement32
Assembly Access Flow Chart32
Tools Required35
Safety Precaution35
Electro-Static Discharge Precautions36
Assembly Replacement Procedures37
Fuse38
HP-HIL Devices38
Video Boards39
Accessory Cards40
Power Supply40
Top Cover41
Front Panel42
Fans44
Fan Housing45
Motherboard46
I/O Card Cage46
Functional Description48
Power Supply48
General Description48
Input Section49
Rectification and Switching Control Circuits50
Power Supply Regulators51
Protection and Reset Circuits52
Power Distribution52
98561-66511 Processor Board54
General Description54
System Timer56
Central Processing Unit56
Ram56
HP-IB Interface57
Video Circuits58
Keyboard Electronics58
Boot Roms and Self-Test Leds58
Other Circuits58
Hp-Hil59
General Description59
Link Controller59
Interface Cables61
Device Controller62
98561-66512 Processor Board64
General Description64
Ram64
98561-66513 Processor Board66
General Description66
Ram67
98561-66519 Processor Board68
General Description68
Central Processing Unit69
Coprocessor69
Menlory Management Unit69
Cache Memory Sub-System69
Boot Roms and Self-Test Leds69
Motherboard70
General Description70
Backplane Board70
Video Boards71
General Description71
Video RAM73
Color Mapping73
Display Controller73
Frame Buffer Controller74
Video Outi)Ut74
Display RA11 Control74
Interrupt Structure74
ID/Font Rom75
Clocks and Timing75
Human Interface Card76
General Description76
Functional Description76
HP 98546 Display Compatibility Interface77
General Description77
Video Card78
Graphics Card79
Boot ROM Functions80
Introduction80
Power-Up Sequence80
Power-Up Algorithm80
Configure Mode Software Override85
Force Long Memory Test86
Continuous Self-Test86
50 Or 60 Hz CRT87
The Human Interface88
Output Devices88
Input Devices88
Remote Human Interface92
Self-Test94
Hardware Initialization Support94
Assembly Self-Test Support94
Tests Perforrned by the Boot RO95
Memory Tests102
Booting Operating Systems104
Boot System Selection104
Unattended Operation104
Attended Operation104
Boot System Priority Control108
Default Mass Storage Variable109
Supported Boot Configurations110
Booting from the SRM112
Troubleshooting114
Introduction114
The Troubleshooting Process114
Materials Required114
Test LED Displays114
Troubleshooting Procedures115
System Level115
Colnputer /Bus Expander Troubleshooting115
Inoperative Unit Procedure117
Live Unit Procedure118
Minimum Configuration118
Functional Unit Troubleshooting120
Intermediate Configuration120
Test Tools122
Overview122
Computer Tests122
System Functional Tests122
CS/80 Exercisers122
Package Contents123
Turn-On Self Test123
Self-Test Error Displays123
Failure Indications126
References132
How to Use this Chapter132
Service Information Locator132
Localized System Identification134
Related Documentation135
BASIC Operating System135
Pascal Operating Systems137
Hp-Ux138
Installation Manuals/Notes141

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