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Epson Equity LT-386SX User Manual - Page 42

Setting the Scratch RAM Option, Setting the CPU Clock Setting, Setting the Shadow RAM, Shift - bios

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Page 42 highlights

Setting the Scratch RAM Option Scratch RAM is an area of memory that OS/2 and some application programs use. The Equity LT-386SX lets you pick what area of memory you want to use for scratch RAM. If you are not using OS/2, VDISK, or a user-defined drive type, choosing BIOS stack area 30:00 provides a little bit more memory for your MS-DOS programs. (See Appendix D in this manual for further information on user-defied drive types.) For best results when using OS/2, a user-defined disk drive type, or a RAM disk program, choose the top of base memory as the scratch RAM location. Setting the CPU Clock Setting This setting determines the execution speed the Equity LT-386SX uses every time you turn on the computer. During operation, you can change the speed by holding down the Ctrl key and then pressing the left Shift and F keys simultaneously. The CM-left Shift-F "hot key" combination does not change the setting the computer uses when you turn it on or reset it. Setting the Shadow RAM Enabling shadow RAM causes the Equity LT-386SX to copy the contents of BIOS into RAM. This speeds up processing operations, because the computer can read RAM much faster than ROM. (Enabling shadow RAM does not reduce the amount of memory you can define as expanded memory.) Setting Up Your System 1-23

Section	Page
Front Matter	1
Contents	7
Introduction	14
How To Use This Manual	18
Where To Get Help	19
Chapter 1	20
Chap 1-Setting Up Your System	20
Unpacking	21
Installing the Hard Disk Drive	23
Connecting a Printer	26
Using the Parallel Interface	27
Using the Serial Interface	29
Connecting the AC Adapter	30
Connecting the Power Cord	33
Starting the System	34
Turning On the Computer	34
Adjusting Screen Contrast and Brightness	36
Initial Screen Display	37
Running the SETUP Program	37
Starting the SETUP Program	38
Setting the Date	39
Setting the Diskette Drive(s)	40
Setting the Hard Disk Drive	40
Setting the Primary Display	41
Setting the Keyboard	41
Setting the Scratch RAM Option	42
Setting the CPU Clock Setting	42
Setting the Shadow RAM	42
Setting the Standby Mode	43
Setting the LCD Contrast	43
Saving Your Settings	44
Inserting the Install Diskette	45
Chap 2-Use the Equity LT-386SX	47
Using the AC Adapter	47
Using the Battery	48
Connecting the Battery Pack	50
Status Indicator Bar	53
Opening and Closing the Screen	55
Using the Handle	56
Selecting Execution Speed	57
Selecting LCD Screen Contrast	57
Changing the Gray Scale Pattern for Any Color	58
Special Keys on the Equity LT-386SX Keyboard	62
Using Diskettes	64
How Diskettes Work	65
Choosing Diskettes for the Equity LT-386SX	65
Caring for Diskettes	66
Inserting and Removing Diskettes	68
Making Backup Copies	69
Write-Protecting Diskettes	69
Using the Hard Disk Drive	70
Caring for the Hard Disk	70
Protecting the Data on Your Hard Disk	71
Improving Hard Disk Performance	71
Turning Off the Hard Disk	72
Modifying the AUTOEXEC.BAT File	72
Resetting the Computer	74
Turning Off the Computer	75
Chap 3-Using MS-DOS With Your Computer	76
Starting and Exiting MS-MDOS	77
Changing the Current Drive	77
The MS-DOS Command Format	79
Entering MS-DOS Commands	80
Storing Data	80
Using Directories	81
The Current Directory	83
Listing the Contents of a Directory	84
Using Pathnames	85
Creating Directories	86
Changing Directories	87
Copying From One Directory to Another	88
Deleting a Directory	89
Formatting Diskettes	89
Formatting a 1.44MB Diskette	90
Formatting a 720KB Diskette	91
Copying Data	92
Using DISKCOPY	93
Using COPY	95
Using BACKUP	97
Deleting Data	99
Using the MS-DOS Shell Program	99
Using HELP	100
Using MENU	102
MENU Utility Options	103
Using an AUTOEXEC.BAT File	104
Creating an AUTOEXEC.BAT File	105
Starting an Application Program	106
Using Memory Beyond 640KB	106
About EMM386.SYS	108
Chap 4-Troubleshooting	111
The Computer Won’t Start	111
The LCD Screen Is Blank	112
The Monitor Screen Is Blank	113
The Computer Locks Up	114
Diskette Problems	114
Diskette Drive Problems	115
Hard Disk Problems	116
Appendix A-DIP Switches	117
Setting the DIP Switches	117
Accessing the DIP Switches	118
Replacing the Expansion Card Cover	123
Appendix B-Installing Options	125
Connecting an External Color Monitor	125
Connecting an External Diskette Drive	127
Installing the Internal Modem	128
Installing the RAM Card	129
Connecting an External Keyboard	130
Installing an Option Card	131
Installing a Math Coprocessor	137
Appendix C-Specifications	138
Main Unit	138
Interfaces	138
Keyboard	139
Mass Storage	139
Display	139
Power Supply	140
Power Requirements	140
Physical Dimensions	140
Environmental Requirements	141
Options	141
Appendix D-System Diagnostics	142
Starting the Diagnostics Program	143
Creating a Database	143
The Main Menu Screen	145
Selecting Diagnostics Tests	147
Setting the Run Time Parameters	148
Timebound Testing	150
Continuous Testing	150
Passbound Testing	150
Error Logging	151
Executing Diagnostics Tests in Batch Mode	153
Running the Tests	153
System Board Diagnostics	154
Basic Functionality Test	154
CPU Protected Mode Test	154
Processor Speed Test	155
Coprocessor Test	155
DMA Controller Test	155
Interrupt Controller Test	156
Timer Test	156
RTC Test	157
CMOS Validity Test	157
Memory Diagnostics	158
BIOS ROM Test	159
Parity Test	159
Pattern Test	159
Walking 1’s Test	160
Walking 0’s Test	160
Address Test	160
Refresh Test	161
Hard Disk Diagnostics	161
Hard Disk Parameters	162
Hard Disk Format	165
Auto Interleave	166
Media Analysis	167
Performance Test	168
Seek Test	169
Read/Verify Test	169
Check Test Cylinder	170
Force Bad Tracks	170
Hard Disk Error Messages	171
Floppy Disk Diagnostics	172
Diskette Format	173
Drive Speed Test	173
Random R/W Test	173
Sequential R/W Test	174
Disk Change Line Test	174
Floppy Disk Error Messages	174
Keyboard Diagnostics	175
Controller Test	176
Scan/ASCII Code Test	176
Keyboard Clock Line Test	176
Keyboard Data Line Test	176
Video Diagnostics	177
Adapter Test	177
Attribute Test	177
80x25 Display Test	177
40x25 Display Test	178
320x200 Graphics Test	178
640x200 Graphics Test	178
Page Selection Test	178
Color Test	178
640x350 Graphics Test	178
640x480 Graphics Test	179
Video Error Message	179
Miscellaneous Diagnostics	179
Printer Adapter Test	179
Communication Adapter Test	180
Keyboard Scan/ASCII Codes	182
Appendix E-Using OS/2	198
Adding the Driver After OS/2 Is Installed	199
Appendix F-Using Other Reference Diskette Utilities	201
Using Microsoft Windows/386	201
Using Microsoft Windows/386	201
Using Microsoft Windows, Version 3.0	203
Using VGARAM	204
Using SCROLL	205
Glossary	206
Index	228