Epson Endeavor User's Guide Page 155
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Appendix A
Specifications
CPU and Memory
32-bit CPU
4SX/25:
Intel
i486SX, 25
MHz
microprocessor; can be replaced with
optional 487SX/25 or ODP486-25
OverDrive processor
4DX/33: Intel i486DX, 33 MHz
microprocessor; can be replaced with
optional ODP486-33 OverDrive processor
4DX2/50: Intel i486DX2,50 MHz
microprocessor
System speed
High and low speeds available; high speed
is CPU-dependent (25 MHz, 33 MHz, or
50 MHz), low speed is simulated 8 MHz
speed; speed selection through keyboard
command; 0 wait state memory access at
high speed
Memory
ROM
4MB RAM standard on a SIMM;
expandable using lMB, 4MB, or 16MB
SIMMs to 32MB (maximum); SIMMs must
be 36-bit, fast-page mode type with 70ns
(or faster) access speed
128KB system BIOS, video BIOS, and
SETUP code located in EPROM on main
system board
Specifications A-l
- User’s Guide 1
- Important Safety Instructions 5
- Contents 9
- VGA Utilities 14
- Optional Equipment 14
- Over Drive Processor 15
- Math Coprocessor 15
- AIternate VGA lnterface 15
- How to Use This Manual 16
- Chapter 1 17
- Turning On the Computer 18
- Using Your Computer 19
- Del to start SETUP 20
- Turning Off the Computer 21
- Using Disks and Disk Drives 21
- How Disks Store Data 22
- Types of Diskette Drives 23
- 1.44MB. 720KB 24
- Write-protecting Diskettes 28
- Formatting Diskettes 33
- Backup Copies 33
- Hard Disk Drive 34
- Backing up the hard disk 35
- Caring for your 35
- Special Keys on the Keyboard 36
- Stopping a Command or Program 37
- Resetting the Computer 38
- Password 39
- Changing the Processor Speed 40
- Chapter 2 44
- How to Use This Chapter 45
- Removing the Cover 47
- Changing the Jumper Settings 49
- Two pin jumpers 50
- Setting the Jumpers 52
- Memory Modules (SIMMs) 54
- Inserting SIMMs 56
- Removing SIMMS 58
- Removing an Option Curd 63
- Replacing the 65
- New Processor Chip 66
- Installing the Memory Chips 67
- Using a Display Adapter 71
- Replacing the Cover 72
- Post-installation Procedures 73
- Chapter 3 74
- Where to Go Next 77
- Removing the Mounting Frames 79
- Installing the Hard Disk 81
- Connecting the Cables 85
- Installing the Drive 93
- Installing and 101
- Chapter 4 110
- Deleting Tests 112
- Adding Tests 113
- Running Tests 114
- Resuming From an Error 115
- Running System Diagnostics 116
- System Diagnostic Tests 116
- System diagnostic tests 116
- Error Messages 117
- Chapter 5 119
- HDFMTALL and press 120
- Formatting a New Disk 121
- Reformatting a Used Disk 121
- Selecting an Option 121
- Selecting a Drive 122
- Formatting a Hard Disk 125
- OF ALL YOUR FILES 126
- Format completed 126
- Current cylinder is nnnn 128
- Exiting the Program 129
- Chapter 6 130
- Setup Guide 132
- Troubleshooting 6-3 132
- 6-4 Troubleshooting 133
- Power-on 134
- (continued) 134
- Troubleshooting 6-5 134
- The Computer Won't Start 135
- The Computer Does Not Respond 136
- 6-8 Troubleshooting 137
- Restoring the Power Supply 138
- Password Problems 139
- Accessing Your System 140
- Keyboard Problems 141
- Monitor Problems 142
- 6-14 Troubleshooting 143
- Diskette Problems 144
- Diskette Drive Problems 146
- Hard Disk Problems 147
- Preparing the Drive 148
- Accessing Data on the Drive 149
- Software Problems 150
- Printer Problems 151
- Option Card Problems 152
- Mouse Problems 153
- Memory Module Problems 154
- Appendix A 155
- Controllers 156
- Specifications A-3 157
- Mass Storage 158
- Keyboard 158
- Physical Characteristics 159
- Power Supply 159
- Environmental Requirements 160
- Power Source Requirements 161
- System Memory Map 162
- GIossary 163
- Cylinders 169
- Data diskette 169
- Extended memory 172
- Extension 172
- Filename 172
- Fixed disk 172
- Graphics 173
- Hard disk 173
- Hardware 173
- Hexadecimal 173
- Multifrequency monitor 178
- Multitasking 178
- Numeric keypad 178
- Operating speed 178
- Operating system 178
- Glossary 19 182
- Glossary 21 184
- Video card 185
- Write-protect 185
- Cnnector 186
- 10 Index 195
- 400195100 197
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