If Something Goes Wrong…
What to Do with a Hardware Conflict
Part I: Getting To Know Your Computer
244
Resolving Hardware Conflicts on Your Own
Just as a business person needs a telephone and a computer to get
the job done, so also computer components need resources to
accomplish a task. A device, such as a CD-ROM drive or a
modem, needs a channel to the computer's Central Processing
Unit (CPU). It also needs a direct channel to the computer's mem-
ory to store information as it works. These channels of communi-
cation are commonly referred to as system resources.
The channel to the CPU is called an Interrupt ReQuest (IRQ)
because it interrupts what the processor is doing and requests
some of the processor’s time. If two or more devices use the same
IRQ, the processor doesn’t know which device is asking for atten-
tion. This causes a problem.
Similarly, the data required by the device is stored in a specific
place or address in memory called the Direct Memory Address
(DMA). If two or more devices use the same DMA, the data
required by one device overwrites the data required by the other. If
either of these situations occur, you have a hardware conflict.
With Plug and Play and Windows 95, avoiding hardware conflicts
is easy. Plug and Play is a type of computer standard present in
your Toshiba Satellite 110 Series computer that helps the system
BIOS (basic input/output system), Windows 95 and a Plug and
Play-compliant devices work together to automatically assign sys-
tem resources to the device. In theory, if every device connected to
the computer is Plug and Play-compliant, no two devices would
compete for the same system resources. You simply plug in the
device and turn your computer on. Windows 95 automatically
configures your system to accommodate the new device.
However, if you install an older (legacy) device that Windows 95
cannot detect, Windows 95 may have difficulty assigning system
resources to it. As a result, a hardware conflict can occur. To see
what resources Windows 95 has assigned to the legacy device, See
“Checking Device Properties” on page 246.. If Windows 95 is
unable to provide the information you need, the pre-assigned set-
tings for IRQs, DMAs and I/O assignments are listed in “System
Resources” on page 351 for your reference.
Summary of Contents for Satellite 110 Series
Page 1: ...Satellite110 Series User sGuide PRINTED WITH SOY INK ...
Page 22: ...xxiii ...
Page 126: ...Chapter 5 Buying Programs 97 Buying Hardware 105 ...
Page 169: ...Little Cards that Do Big Things RemovingaPCCard Part I Getting To Know Your Computer 139 ...
Page 321: ...MaxTime The Machine Settings Dialog Box Part II Technical Reference 291 ...
Page 351: ...TSETUP OTHERS Part II Technical Reference 321 ...
Page 365: ...The Diagnostic Test ExitingtheDiagnosticMenus Part II Technical Reference 335 ...
Page 368: ...Appendix A Built in Features 339 Optional Accessories and Devices 344 Specifications 346 ...
Page 377: ...Features and Specifications Specifications Part III Appendixes 347 ...
Page 378: ...Appendix B ...
Page 385: ...System Resources Input Output PortAddressAssignments Part III Appendixes 355 ...
Page 386: ...Appendix D CS Model Video Modes 358 Satellite 110CT Video Modes 359 ...
Page 391: ...Video Modes Satellite110CT VideoModes Part III Appendixes 361 ...