VMEPROM
SYS68K/CPU-30 R4 Technical Reference Manual
Page 128
The following describes the software definition for the rotary switches:
Table 38: Upper Rotary Switch (SW2)
Bit 3:
This bit indicates whether the RAM disk should be initialized after reset. If this
bit is set to "0" (settings 0-7), the RAM disk is initialized as defined by bit 0 and
1. When the disk is initialized, all data on the disk is lost.
Bit 2:
This bit defines the default data size on the VMEbus. If the bit is set to "0", 16
bits are selected, if it is set to "1", 32 bits are selected.
Bit 1
and
Bit 0:
These two bits define the default RAM disk. See Table 40, “RAM Disk Usage,”
on page 128 for a detailed description.
If AUTOBOOT is set by bit 2 and 3 of SW1, bit 1 and 0 of SW2 define which
operating system will be booted. See Table 42, “Boot an Operating System (if
AUTOBOOT is selected),” on page 129 for detailed description.
Table 39: Lower Rotary Switch (SW1)
Bit 3
and
Bit 2:
These two bits define which program is to be invoked after reset. Please refer
to Table 41, “Program After Reset,” on page 129 for a detailed description.
Bit 1:
If this switch is "0" (settings 0,1,4,5,8,9,C,D), VMEPROM tries to execute a
start-up file after reset. The default filename is SY$STRT. If the bit is "1", VME-
PROM comes up with the default banner.
Bit 0:
If this switch is set to "0" (settings 0,2,4,6,8,A,C,E), VMEPROM checks the
VMEbus for available hardware after reset. In addition VMEPROM waits for
SYSFAIL to disappear from the VMEbus. The following hardware can be
detected:
Contiguous memory
ASCU-1/2
ISIO-1/2
SIO-1/2
ISCSI-1
WFC-1
Please refer to Section 8.2, ‘CONFIG - Search VMEbus for Hardware,’ on
page 138 for details.
Table 40: RAM Disk Usage
Bit 1
Bit 0
Upper Switch (SW 2)
selected on
1
1
RAM DISK AT TOP OF MEMORY (32 Kbytes)
3,7,B,F
1
0
RAM DISK AT FC80.0000
16
(512 Kbytes)
2,6,A,E
0
1
RAM DISK AT 4070.0000
16
(512 Kbytes)
1,5,9,D
0
0
RAM DISK AT 4080.0000
16
(512 Kbytes)
0,4,8,C
Содержание SYS68K/CPU-30 R4
Страница 41: ...Installation SYS68K CPU 30 R4 Technical Reference Manual Page 28...
Страница 127: ...Hardware Description SYS68K CPU 30 R4 Technical Reference Manual Page 114...
Страница 130: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 117 4 2 1 RTC 72421...
Страница 131: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 118 4 2 2 DUSCC 68562...
Страница 132: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 119 4 2 3 PI T TS68230...
Страница 133: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 120 4 2 4 SCSI 87033 34...
Страница 134: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 121 4 2 5 FDC37C65C...
Страница 135: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 122 4 2 6 LANCE Am79C90...
Страница 136: ...SYS68K CPU 30 R4 Technical Reference Manual Set of Data Sheets Page 123 4 2 7 SIA Am7992B...
Страница 137: ...Set of Data Sheets SYS68K CPU 30 R4 Technical Reference Manual Page 124 4 2 8 Motorola MC68030 and MC68882...
Страница 145: ...VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 132...
Страница 189: ...Appendix to VMEPROM SYS68K CPU 30 R4 Technical Reference Manual Page 176...