National Instruments AT-MIO-64F-5, User Manual

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Chapter 2 Configuration and Installation
© National Instruments Corporation 2-5 AT-MIO-64F-5 User Manual
Table 2-2. Switch Settings with Corresponding Base I/O Address and Base I/O Address Space
Switch Setting
A9 A8 A7 A6 A5
Base I/O Address
(hex)
Base I/O Address Space
Used (hex)
0 0 X X X
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
0 1 1 1 0
0 1 1 1 1
1 0 0 0 0
000 - E00
100
120
140
160
180
1A0
1C0
1E0
200
Reserved
100 - 11F
120 - 13F
140 - 15F
160 - 17F
180 - 19F
1A0 - 1BF
1C0 - 1DF
1E0 - 1FF
200 - 21F
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
1 1 0 1 1
1 1 1 0 0
1 1 1 0 1
1 1 1 1 0
1 1 1 1 1
220
240
260
280
2A0
2C0
2E0
300
320
340
360
380
3A0
3C0
3E0
220 - 23F
240 - 25F
260 - 27F
280 - 29F
2A0 - 2BF
2C0 - 2DF
2E0 - 2FF
300 - 31F
320 - 33F
340 - 35F
360 - 37F
380 - 39F
3A0 - 3BF
3C0 - 3DF
3E0 - 3FF
Interrupt and DMA Channel Selection
The base I/O address selection is the only resource on the AT-MIO-64F-5 board that must be set
manually before the board is placed into the PC. The interrupt level and DMA channels used by
the AT-MIO-64F-5 are selected via registers in the AT-MIO-64F-5 register set. The
AT-MIO-64F-5 powers up with all interrupt and DMA requests disabled. To use the interrupt
capability of the AT-MIO-64F-5, an interrupt level must first be selected via register
programming, then the specific interrupt mode must be enabled. The same method holds for
DMA channel selection. To use the DMA capability of the board, one or two DMA channels
must be selected through the appropriate register, then the specific DMA mode must be enabled.
It is possible to have interrupt and DMA resources concurrently enabled.
The interrupt lines supported by the AT-MIO-64F-5 hardware are IRQ3, IRQ4, IRQ5, IRQ7,
IRQ10, IRQ11, IRQ12, and IRQ15. The DMA channels supported are channels 0 through 3, and
channels 5 through 7. If the AT-MIO-64F-5 is used in an AT-type computer, only DMA
channels 5 through 7 should be used because these are the only 16-bit channels available. If the
board is used in an EISA computer, all channels are capable of 16-bit transfers and can be used.