Artesyn MVME4100ET Single Board Computer Installation and Use (June 2014) - Manual (Page 34)

Hardware Preparation and Installation
MVME4100ET Single Board Computer Installation and Use (6806800K76F) 34
2.4.2 Geographical Address Switch, S2
The Tsi148 VMEbus Status Register provides the VMEbus geographical address of the
MVME4100ET. The switch reflects the inverted states of the geographical address signals.
Applications that are not using the 5-row backplane can use the geographical address switch
to assign a geographical address per the following diagram. Note that this switch is wired in
parallel with the geographical address pins on the 5-row connector, so these switches must be
Table 2-5 Configuration Switch Settings (S1)
Switch Description Setting Function
S1-1 Safe Start 1 [OFF]
ON Use normal ENV
Use safe ENV
S1-2 Boot Block B
Select [OFF]
ON Flash memory map normal and boot block A selected
Boot block B selected, mapped to highest address
S1-3 Flash Bank WP [OFF]
ON Entire NOR flash is not write-protected
Flash is write-protected
When this switch is on, writes to the NOR flash devices are
blocked by hardware. The FLASH BANK WP switch does
not control writes to the NAND flash.
S1-4 JTAG Pass Thru [OFF]
ON Normal operation
Pass-Through mode
S1-5 PCI Mode [OFF]
ON PCI-X mode
PCI-C, 66 MHz mode
S1-6 PCI 66 [OFF]
ON PCI-X 100 MHz mode
PCI 66 mode and PCI bus mode controlled by PCI Mode
switch
S1-7 MASTER WP [OFF]
ON Master write-protection (WP) disabled
Master WP on to write protect the NOR flash, NAND flash,
MRAM, and I
2
C EEPROM devices
This switch does not write protect the SPD on the SO-
CDIMM. Other switches and control bits may write-
protect individual devices.
S1-8 Reserved - -
1. Switch status is readable from System Status Register 1, bit 5. Software should check this bit and act accordingly.