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參數(shù)資料
| 型號(hào)： | PCSYSCON |
| 英文描述： | PC(ISA)BUS I/O CARD |
| 中文描述： | 電腦（ISA）總線的I / O卡 |
| 文件頁數(shù)： | 15/36頁 |
| 文件大小： | 383K |
| 代理商： | PCSYSCON |
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Section 3. Using the PCSYSCON
Installing the PCSYSCON
The PCSYSCON contains CMOS circuitry and can be damaged by
static electricity, as can your PC. When installing, DO NOT touch the
gold edge fingers, but DO touch a metal part of your PC before
picking up the PCSYSCON. DO NOT place the PCSYSCON onto
plastic surfaces, particularly polystyrene or polythene.
The mechanical part of installation is quite simple. In most cases it
involves switching your PC off, taking its cover off, finding a spare 8-
bit I/O slot and inserting the PCSYSCON into it. However, some PCs
have different ways of doing this, so you must read your PC manual
and follow its instructions.
Initially we suggest that you do not use interrupts, so remove LK1.
Set the switches to 180 and power your PC up. Watch the LEDs on
the PCSYSCON while it powers up. You may see the red LED flash
once. This simply means that the BIOS startup program in your PC
is checking through I/O space to see if any boards are there, and is
nothing to worry about. On the other hand, if your PC fails to boot or
the red LED flashes continuously, you will need to change the
PCSYSCON base address (see Addresses below for suggestions).
If your PC does fail to boot up, power down, remove the PCSYSCON
and power up again to prove that the problem lies with the
PCSYSCON rather than some disturbance created by your
installation procedure, such as a loosened cable connector, for
example.
Addresses
Although PCs differ in their available I/O address space, some
generalisations are possible. There is usually space between 100H
and 1FFH. Addresses 300H to 31FH are (notionally) assigned to an
I/O prototyping card, so if you don't have one these are also free.
Avoid addresses below 100H. Remember that many PCs 'wrap'
addresses above 3FFH, so that 400H is treated as 000H, which
won't work.
It is not usually necessary to remove the PCSYSCON from the PC
in order to change the address. Unless your PC is very cramped
internally it is possible to rotate the address switches to change
address with the PCSYSCON still installed.
Installing Multiple PCSYSCONs
This is just like installing a single one, except that they must all be
installed at different addresses. The most obvious scheme is to
install them at consecutive addresses, remembering that each
PCSYSCON takes up two bytes of I/O space. This is also what the
Arcom software drivers expect. For example, install the first one at
180H, the second at 182Hand so on.
2192-09065-000-000
Section 3. Using the PCSYSCON
Page 15
J278 PCSYSCON
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