Sun Microsystems 220R - Manual (Page 197)

7.6.2 OBDiag Tests
The OBDiag tests are described in the following sections:
4 Section 7.6.3 “PCI/Cheerio” on page 197
4 Section 7.6.4 “EBus DMA/TCR Registers” on page 198
4 Section 7.6.5 “Ethernet” on page 199
4 Section 7.6.6 “Keyboard” on page 200
4 Section 7.6.7 “Mouse” on page 200
4 Section 7.6.8 “Parallel Port” on page 200
4 Section 7.6.9 “Serial Port A” on page 201
4 Section 7.6.10 “Serial Port B” on page 202
4 Section 7.6.11 “NVRAM” on page 203
4 Section 7.6.13 “SCSI” on page 203
4 Section 7.6.14 “All Above” on page 203
Note - The OBDiag Audio test is not available for this system.
7.6.3 PCI/Cheerio
The PCI/Cheerio test performs the following diagnostics.
Test Function
vendor_ID_test
Verifies that the U2P ASIC vendor ID is 108e.
device_ID_test
Verifies that the U2P ASIC device ID is 1000.
mixmode_read
Verifies that the PCI configuration space is accessible as half-word bytes
by reading the EBus2 vendor ID address.
e2_class_test
Verifies the address class code. Address class codes include bridge device
(0 x B, 0 x 6), other bridge device (0 x A and 0 x 80), and programmable
interface (0 x 9 and 0 x 0).
status_reg_walk1
Performs walk-one test on status register with mask 0 x 280 (U2P ASIC is
accepting fast back-to-back transactions, DEVSEL timing is 0 x 1).
line_size_walk1
Performs tests a through e.
latency_walk1
Performs walk-one test on latency timer.
Diagnostics and Troubleshooting 197