Model 466-1 Adapter
CSR Accessed From The SBus 51
6.2.1 Remote Command Register 2
The Remote Command Register 2 is located on the VMEbus adapter card but
is accessed via the SBus adapter card. It is a byte-wide, read/write register
used to control the size of the page window on the VMEbus adapter card when
Page Mode is selected. Remote Command Register 2 is accessed in Node I/O
space with address = 020 0008
hex
.
BIT
FUNCTION
7
reserved -- program to "0"
6
Use Address Modifier Register
5
reserved -- program to "0"
4
reserved -- program to "0"
3
Page Size Select Bit 3
2
Page Size Select Bit 2
1
Page Size Select Bit 1
0
Page Size Select Bit 0
USE ADDRESS MODIFIER REGISTER (bit 6): This bit is the software-
selectable switch analogous to the Address Modifier jumper in the VMEbus
adapter card
SYS
jumper block. The Address Modifier Register is enabled by
setting bit 6 to "1".
PAGE SIZE SELECT (bits 0-3): These bits control the size of the Page Mode
window into VMEbus address space. The default page window size, after the
adapter card is reset, is 64K bytes. These bits are set as follows:
PAGE SIZE SELECT BIT:
3
2
1
0
PAGE SIZE
0
0
0
0
64K byte
0
0
0
1
128K byte
0
0
1
1
256K byte
0
1
1
1
512K byte
1
1
1
1
1M byte
Содержание 466-1
Страница 1: ...Model 466 1 Adapter Hardware Manual Connects a SBus Computer to a VMEbus System...
Страница 2: ...Model 466 1 Adapter ii...
Страница 24: ...Model 466 1 Adapter 14 Adapter Functions...
Страница 52: ...Model 466 1 Adapter 42 VMEbus Adapter Card Configuration...
Страница 70: ...Model 466 1 Adapter 60 CSR Accessed From The SBus...
Страница 88: ...Model 466 1 Adapter 78 Common Problems And Solutions...
Страница 106: ...Model 466 1 Adapter 96 Jumper Configuration Worksheets...
Страница 107: ...Model 466 1 Adapter Jumper Configuration Worksheets 97 D 1 SBus Adapter Card Worksheet J1...
Страница 108: ...Model 466 1 Adapter 98 Jumper Configuration Worksheets...
Страница 110: ...Model 466 1 Adapter 100 Jumper Configuration Worksheets...