Model 466-1 Adapter
Common Procedures And Programming Sequences 67
8.4 How To Acknowledge A VMEbus Backplane Interrupt
Configure the
T-INT
jumpers (see section 4.5) on the VMEbus adapter
card to transmit the desired backplane interrupt(s) across the cable.
1.
Make sure the adapter has been initialized. See section 8.1.
2.
Install your interrupt handler.
3.
Wait for the interrupt(s). When the interrupt handler is executed, it must
generate an interrupt acknowledge cycle on the VMEbus to clear the
interrupt and retrieve the interrupt vector from the interrupting device.
4.
Write the IACK code bits to Remote Command Register 1.
5.
Do a word or byte read of the IACK Read Register to generate an
Interrupt Acknowledge Cycle on the VMEbus, and return the Status ID
(interrupt vector) of the interrupting device.
6.
The interrupt handler continues with task specific operations, and returns
to foreground code when finished.
8.5 How To Acknowledge A Programmed Interrupt (PT) From
VMEbus
Configure the
T-INT
jumpers (see section 4.5) on the VMEbus adapter
card to transmit the PT Interrupt across the cable.
1.
Make sure the adapter has been initialized. See section 8.1.
2.
Install your interrupt handler.
Summary of Contents for 466-1
Page 1: ...Model 466 1 Adapter Hardware Manual Connects a SBus Computer to a VMEbus System...
Page 2: ...Model 466 1 Adapter ii...
Page 24: ...Model 466 1 Adapter 14 Adapter Functions...
Page 52: ...Model 466 1 Adapter 42 VMEbus Adapter Card Configuration...
Page 70: ...Model 466 1 Adapter 60 CSR Accessed From The SBus...
Page 88: ...Model 466 1 Adapter 78 Common Problems And Solutions...
Page 106: ...Model 466 1 Adapter 96 Jumper Configuration Worksheets...
Page 107: ...Model 466 1 Adapter Jumper Configuration Worksheets 97 D 1 SBus Adapter Card Worksheet J1...
Page 108: ...Model 466 1 Adapter 98 Jumper Configuration Worksheets...
Page 110: ...Model 466 1 Adapter 100 Jumper Configuration Worksheets...
