Technical data

CHALLENGE/Onyx Diagnostic Road Map 6-7
vmelpbk Test the VMECC loopback
capability
This test performs VME accesses in A24 PIO
Loopback mode and A32 PIO Loopback
Mode. Halfword accesses and word accesses
are tested for each of these cases.
cddata Test the cdsio interrupts The cdsio loopbacks are performed at several
different baud rates. The received data from
the loopback is tested for accuracy. The status
bits from the serial port are tested for framing,
overrun and parity errors. This test can be run
with internal loopback or with an external
loopback plug.
cdintr Test the cdsio interrupts This test transmits a byte to the serial port in
internal loopback mode. The test then waits
for an interrupt or a time out condition to
occur.
vmedata Test the VMEcc DMA engine This test checks the VME DMA engine using
the cdsio as the external controller. The DMA
engine in VMECC is used to transfer data from
host memory to controller memory and
vice-versa.
Test Function Description
Table 6-3 IO4 VME Adapter Tests