Instruction manual

10.4 Dual SCSI Error/Interrupt Matrix
Table 40 lists and describes interrupts from the Dual SCSI.
Table 40 Dual SCSI Error/Interrupt Matrix
CIR Error/Interrupt Hardware Action Driver Action
16 SCSI[0] 53C94
DREQ
int -> TURBOchannel disable and clear interrupt
diagnostic use only
17 SCSI[1] 53C94
DREQ
int -> TURBOchannel disable and clear interrupt
diagnostic use only
18 SCSI[0] 53C94
interrupt
int -> TURBOchannel normal interrupt handling
19 SCSI[1] 53C94
interrupt
int -> TURBOchannel normal interrupt handling
20 Reserved disable and clear interrupt
21 Reserved disable and clear interrupt
22 SCSI[0] DMA error DMA disabled
~int -> TURBOchannel
Respond to machine check
logout frame
23 SCSI[1] DMA error DMA disabled
~int -> TURBOchannel
Respond to machine check
logout frame
24 SCSI[0] adapter bus
parity error
DMA disabled
~int -> TURBOchannel
Mask DMA error interrupts
for SCSI[0]
Clear interrupt and reenable
DMA
Complete transaction
Reset error interrupts
Retry transaction
25 SCSI[1] adapter bus
parity error
DMA disabled
~int -> TURBOchannel
Mask DMA error interrupts
for SCSI[1]
Clear interrupt and reenable
DMA
Complete transaction
Reset error interrupts
retry transaction
26 SCSI[0] DMA buffer
parity error
DMA disabled
~int -> TURBOchannel
Mask DMA error interrupts
for SCSI[0]
Clear interrupt and reenable
DMA
Complete transaction
Reset error interrupts
Retry transaction
27 SCSI[1] DMA buffer
parity error
DMA disabled
~int -> TURBOchannel
Mask DMA error interrupts
for SCSI[1]
Clear interrupt and reenable
DMA
Complete transaction
Reset error interrupts
Retry transaction
(continued on next page)
10–12 Hardware Exceptions and Interrupts