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150 Chapter 8
io3000
io3000 classes and subtests
Device specification
Due to Core Logic SRAM space limitations, only 20 devices per SAGA
can be tested at a time. Up to 24 SCSI devices can be specified using
parameter words 8-19. Each of these parameter words contains two
device specifications, as shown in Figure 37. Word 8 contains device
specification 0 and 1. Word 9 contains 2 and 3, and so on.
Up to six Fibre Channel devices can be specified in parameter words 20-
37. Each device requires three parameter words as shown in Figure 38
and Table 45.
Figure 37 io3000 test parameter device specification for directly attached
SCSI targets (words 8-19)
Fields within each parameter word specify the devices as shown in Table
44. Bit 0 is the upper (left most) bit in the parameter word.
Device 0 Device 1
Device 2 Device 3
Device 4 Device 5
Device 22 Device 23
Word 8
Word 9
Word 10
Word 19