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6. Interrupt Level (IRQ)
The DS-100 allows the use of any interrupt level in the range IRQ2 to IRQ7, IRQ10 to IRQ12,
IRQ14, or IRQ15, selected using jumper block J3 (for Serial 0) or J4 (for Serial 1). In Figure 9,
the factory default settings for Serial 0 and Serial 1 are shown. To select a different IRQ, move
the jumper to the appropriate position on J3 or J4.
J3
Serial 0
Default is IRQ 4
12
34567891011
IRQ7
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ11
IRQ12
IRQ14
IRQ15
IRQ10
13
14
15 16 17 18 19 20 21 22
12
12
34567891011
IRQ7
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ11
IRQ12
IRQ14
IRQ15
IRQ10
13
14
15 16 17 18 19 20 21 22
12
Serial 1
J4
Default is IRQ 3
Figure 9 --- Interrupt level (IRQ) selection
5-1 Quatech Inc.