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- hardware.txt
-
- PacketPeT Lite Windows
- Copyright (c) 1993, 1994
- Chuck Harrington Software, Inc
- All Rights Reserved!
-
-
- This file supplies some information regarding hardware conflicts
- in PCs and their resolution.
-
- HARDWARE CONFLICT:
- Most PCs come with two serial ports standard, COM1 and COM2.
- Most users will have their mouse on serial port COM1 and their
- TNC on COM2. Usually these people who have a basic system without
- a lot of extra adapter cards will have no problem.
-
- When you start adding other cards such as internal phone modems,
- tape backups, sound cards, buss mouse cards or CDROMs, IRQ
- conflicts can occur.
-
- These problems are not caused by PacketPeT or Windows, but by the
- design of the PC and it's numerous adapter cards. Solutions to
- these problems range from easy to down right impossible. The
- solution can be stated in one sentence, and if you achieve the
- following goal, you will save yourself from many problems with
- serial ports and other adapter cards as well!
-
- EACH DEVICE IN YOUR PC MUST HAVE IT'S OWN UNIQUE IRQ!!!
-
- Don't get side tracked by tips on how to "SHARE IRQs". The author
- worked on this problem for many months and found the only
- reliable method (and a MUST for OS/2) is to make sure each serial
- port has it's own IRQ.
-
- Check your computer hardware manuals and the jumper settings on
- your adapter cards to make sure no two cards have been configured
- to use the same IRQ!
-
- Most adapter cards will have jumpers which allow changing IRQs to
- another number. It is important to note, that even if you change
- an IRQ, you must then install the proper software driver to
- utilize that IRQ!! Happily, Windows 3.1 and OS/2 2.x, support
- serial ports on alternate IRQs.
-
- The author of PacketPeT has a PC with a sound card, a CDROM, and
- 4 serial ports that work simultaneously! This was accomplished by
- putting two of serial ports on IRQ10 and IRQ11, and going to the
- Windows Control Panel Serial Port Advanced settings and changing
- the IRQs. This also works with OS/2 2.1, but the IRQs must be
- changed in the config.sys file (see your OS/2 manual).
-
-
- When conflicts do occur, somebody has to move to a different IRQ,
- or be removed from the PC! Often, the easiest course of action is
- to move the serial port. Some serial cards can be configured for
- IRQs 2,3,4 and 5. (IRQ2 is really IRQ9 on a 286 or above PC). If
- you are not using LPT2, IRQ5 is often a good place to move your
- serial port to, but beware that a sound card or another adapter
- card may already be using IRQ5. IRQ2 may also be unused. Beware
- that since IRQ2 is "cascaded" on 286 and above PCs, that it is
- actually IRQ9, and you must use a software driver configured for
- IRQ9!
-