Digital Equipment DECstation 5000/100 Series, Maintenance Manual

Page: 304 / 392

SCC DMA test error messages
SCC DMA test error message have the form
?TFL: 3/scc/dma ( code :Ln N SIR_xptd= xxxxxxxx SIR= yyyyyyyy
SSR= zzzzzzzz )
?TFL: 3/scc/dma indicates that the SCC DMA test reported
an error.
code
represents a number that identifies which part of the
test failed.
N represents the number of the serial line that reported the
error.
The SIR_xpted value is the expected value for the system
interrupt register.
The SIR value is the actual value in the system interrupt
register.
The SSR value is the value in the system status register.
Table D-5 discusses the codes used in SCC DMA test error
messages.
Table D-5. SCC DMA Test Error Codes
Error Code Meaning
1 SIR values are invalid.
2 Miscompare occurred during DMA read and
write operation.
3 Overrun occurred in the receive buffer.
4 Interrupt signal was not sent to the system.
D–12 Base System Test Commands and Messages