Instruction manual

Table 44 TURBOchannel Differences
System TURBOchannel Option Slots
300L 0
300/300X/300LX 2
400/600/700 3
500/800/900 6
500X 5
• Diagnostic LEDs
Table 45 lists diagnostic LED displays and locations.
Table 45 Diagnostic LED Displays and Locations
System Display Location
300, 300L, 300X,
300LX
8 LEDs Inside, visible through right side louvres
400/600/700 8 LEDs Back panel
500/800/900 Hexadecimal
display
Front panel
• FLASH ROM Locations
On the 300 models, FLASH ROMs are located on the system board
accessed through the COREIO ASIC.
On 400/600/700 models, both ROMs are connected to the COREIO ASIC,
on the I/O board.
On 500/800/900 models, one ROM is located on the system board and one
ROM is located on the I/O board.
• Other differences:
SCSI buses
300 models have only one SCSI channel, SCSI-A; all other models have
two SCSI channels, SCSI-A and SCSI-B.
Network connector
300 models have only a 10BaseT network connector; other models
have both thickwire and 10BaseT connectors, which can be enabled as
described in Table 16.
Graphics engines
300 and 500 models have embedded graphics circuits; other models have
no embedded graphics circuit.
12–2 Firmware: Overview