Fastwel DIC324, Руководство пользователя

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User Manual DIC324
 
Mode
Reserved
BA5
|
|
BA0
1
0
SA1
Mode
Reserved
BA5
|
|
BA
0
1
0
SA1
A) B)
Fig. 3-1: SA1 base address setting switch
Option: A)
The module uses an extended addressing and decryption of 20-bit system ISA-bus
addresses (SA19
– SA0). The module is being addressed when the base address (BA)
of the module (BA is assigned by setting the engines BA[5:0] of SA1 switch) are
matched with the bits of addresses SA[9:4] in the I/O area (at the state of bits
SA[15:12] = 0h). The ports occupy 16 bytes in the I/O area.
Option: B)
The module uses an extended addressing and decryption of 20-bit system ISA-bus
addresses (SA19
– SA0). The module is being addressed when the base address (BA)
of the module (BA is assigned by setting the engines BA[5:0] of SA1 switch) are
matched with the bits of addresses SA[9:4] in the I/O area (at the state of bits
SA[15:12] = Ah). The ports occupy 16 bytes in the I/O area.
NOTE:
DELIVERIES OF DIC324 MODULE BY DEFAULT, WITH BASE ADDRESS CONFIGURATION
– A110 (COMPLIES WITH
FIG. 3-1
B)
When addressing to the module, the LED for indication of requests
(references) is activated for a short period.
The table below shows the options of setting the base address (BA).
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