Motorola MVME177 Installation And Use Manual page 158

Configure and Environment Commands
ENV Parameter and Options
Short I/O (VMEbus A16) Control
F-Page (VMEbus A24) Enable
D
[Y/N]
F-Page (VMEbus A24) Control
ROM Speed Bank A Code
ROM Speed Bank B Code
Static RAM Speed Code
PCC2 chip Vector Base
VMEC2 Vector Base #1
VMEC2 Vector Base #2
VMEC2 GCSR Group Base Address
VMEC2 GCSR Board Base Address
VMEbus Global Time Out Code
Local Bus Time Out Code
VMEbus Access Time Out Code
D-14
Table D-1. ENV Command Parameters (Continued)
Default Meaning of Default
01 DeÞnes the access characteristics for the
address space deÞned with the Short
I/O address decoder. Default is $01.
Y Yes, Enable the F-Page Address
Decoder.
02 DeÞnes the access characteristics for the
address space deÞned with the F-Page
address decoder. Default is $02.
05 Used to set up the ROM speed. Default
05 $05 = 165 ns (for 50 MHz MVME177s),
or $05 = 132 ns (for 60 MHz
MVME177s).
01 Used to set up the SRAM speed.
Default $01 = 125 ns (for 50 MHz
MVME177s).
00 Used to set up the SRAM speed.
Default $00 = 132 ns (for 60 MHz
MVME177s).
05 Base interrupt vector for the component
06 speciÞed. Default: PCC2 chip = $05,
07 VMEchip2 Vector 1 = $06,
VMEchip2 Vector 2 = $07.
D4 SpeciÞes the group address
($FFFFxx00) in Short I/O for this board.
Default = $D4.
00 SpeciÞes the base address ($FFFFD4x0)
in Short I/O for this board.
Default = $00.
01 This controls the VMEbus timeout
when systems controller.
Default $01 = 64 µs.
00 This controls the local bus timeout.
Default $00 =8 µs.
02 This controls the local bus to VMEbus
access timeout.
Default $02 = 32 ms.