Keithley DAS-800 series, User Manual

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Figure 3-3. Setting the Base Address
Table 3-1 lists I/O addresses commonly used by IBM PC/XT, AT, and
compatible computers. Determine an even boundary of eight I/O
addresses within the range of 000H to 3F8H that is not being used by
another resource in your system (including another DAS-800 Series
board), and set the switches to the appropriate base address.
Table 3-1. I/O Address Map (000H to 3FFH)
Address Range Use
000H to 00FH 8237 DMA #1
020H to 021H 8259 PIC #1
040H to 043H 8253 timer
060H to 063H 8255 PPI (XT)
060H to 064H 8742 controller (AT)
070H to 071H CMOS RAM and NMI mask register (AT)
080H to 08FH DMA page registers
0A0H to 0A1H 8259 PIC #2 (AT)
0A0H to 0AFH NMI mask register (XT)
0C0H to 0DFH 8237 DMA #2 (AT - word-mapped)
0F0H to 0FFH 80287 numeric processor (AT)
1F0H to 1FFH Hard disk (AT)
200H to 2FFH Game / control
210H to 21FH Expansion unit (XT)
1 2
3 4
5 6
7
O
N