26 Personal488 (with GP488B)
Personal488 User's Manual For Windows95 and Windows NT
Step 3: Configuring the GP488B Interface Interrupt (IRQ)
1. The factory default Interrupt (IRQ) is 7. If this creates a conflict, reset SW1 microswitches 1, 2,
and 3, and jumper J4 according to the figure. The switch and jumper settings must both indicate the
same interrupt level for correct operation with interrupts.
2. If reset, record the new Interrupt (IRQ) being used.
The GP488B interface board may be set to interrupt the PC on the occurrence of certain hardware
conditions. The level of the interrupt generated is set by J4. The GP488B adheres to the “AT-style”
interrupt sharing conventions. When an interrupt occurs, the interrupting device must be reset by
writing to I/O address
02FX
, where X is the interrupt level (from 0 to 7). This interrupt response level
is set by switches 1, 2, and 3 of SW1 which must be set to correspond to the J4 interrupt level setting.
Summary of Contents for OMB-PER-488/W95
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Page 38: ...32 Personal488 with GP488B Personal488 User s Manual For Windows95 and Windows NT Notes...
Page 52: ...46 Driver488 W95 Driver488 WNT Personal488 User s Manual For Windows95 and Windows NT Notes...
Page 136: ...130 Appendix Personal488 User s Manual For Windows95 and Windows NT Notes...
Page 139: ...Personal488 User s Manual For Windows 95 and Windows NT Index 133 Notes...
Page 142: ...136 Abbreviations Personal488 User s Manual For Windows95 and Windows NT Notes...