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參數(shù)資料
| 型號： | 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)： | 16/36頁 |
| 文件大?。?/td> | 383K |
| 代理商： | PCSYSCON |
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If you are installing more than one type of PCbus I/O board it makes
sense to keep all boards of each type at consecutive addresses.
Don't forget that other boards may take up more than two I/O
address locations. If you are going to use interrupts you have two
choices. Either all boards can share the same interrupt line or you
can jumper one board to IRQ2 and one to IRQ3 (this implies two
boards maximum). More of this later.
A Quick Installation Test
It is very easy to test the PCSYSCON with the DEBUG program to
show that it is at the address you thought. Assume that the address
is 180 H.
Run the DEBUG program by typing
DEBUG <RET>
At the prompt, type
o 180 80 <RET>
The red LED should flash once, showing that you have accessed the
PCSYSCON. In fact, this command has made the pointer point to
the green (user) LED register. To switch the green LED on, type
o 181 1 <RET>
and to switch it off, type
o 181 0 <RET>
To exit from DEBUG type
q <RET>
2192-09065-000-000
Section 3. Using the PCSYSCON
Page 16
J278 PCSYSCON
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