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Default VME Settings MOTLoad Firmware
MVME55006E Single-Board Computer Installation and Use (6806800A37D)
63
z VMEbus Slave Image 0 Translation Offset = 00000000
Sets VSI0_TO to define that no translation of the VMEbus address is to occur when
transferred to the local PCI bus. According to the CHRP map in use by MOTLoad, this will
result in transfers to local DRAM; that is, 0x00000000 on the VMEbus is 0x00000000 in
local DRAM.
z VMEbus Slave Image 1 - 7
These images are set to zeroes and thus disabled.
z VMEbus Register Access Image Control Register = 00000000
The VRAI_CTL register is disabled.
z VMEbus Register Access Image Base Address Register = 00000000
The contents of the VRAI_BS register are not applicable since the image is disabled.
z PCI Miscellaneous Register = 10000000
The LMISC register is set for Universe I compatibility and the coupled window timer is
disabled.
z Special PCI Slave Image Register = 00000000
The SLSI register is disabled.
z Master Control Register = 00C00000
The MAST_CTL register is set to retry forever before the PCI master signals error, transfer
128 bytes on posted writes before release, use VMEbus request level 3, request mode =
Demand, Release When Done, align PCI transfers on 32 bytes and use PCI bus 0.
z Miscellaneous Control Register = 52040000
Sets MISC_CTL register to utilize 256 second VMEbus timeout, round robin arbitration, 256
second arbitration timeout, do not use BI-mode and assertion of VIRQ1 is to be ignored.
z User AM Codes = 40400000
Sets USER_AM to indicate a user AM code of 0.
The resulting map is therefore:
PCI addresses 0x91000000 - 0xB0000000: VMEbus A32/D32 space, addresses
0x01000000 - 0x2000000.
PCI addresses 0xB0000000 - 0xB1000000: VMEbus A24/D16 space, addresses
0xF0000000 - 0xF1000000.
PCI addresses 0xB3FF0000 - 0xB4000000: VMEbus A16/D16 space, addresses
0xFFFF0000 - 0xFFFFFFFF.
VMEbus A32/D32 addresses from 0x00000000 to (local DRAM size) address the local
memory of the MVME5500.
The following sections provide additional information pertaining to the VME firmware settings
of the MVME5500. A few VME settings are controlled by hardware jumpers while the majority
of the VME settings are managed by the firmware command utility vmeCfg.