dddevice from which you are booting: RM = PROM module
DC = disk drive or cartridge tape drive (CTD) via HPIB; SCSI disk drive DI = 248x integrated disk controller
DS = disk drive over DS/1000IV or HP 12076 LAN Card
MT = magnetic tape drive via HPIB; DAT tape drive
fffile number: not required for %BRM.
For %BDS (boot over HDLC or LAN), the ff parameter is an octal number from 00000 to 77777. It is converted to ASCII to form the Pfffff file name. Refer to •DS Link" and •LAN Link" later in this chapter.
For %BDC (boot from disk), ff is the bootable file number. This is the same number given as the third parameter to FPUT if the system is on a new file system volume. Bootable file 0 starts at cylinder 0, track 0, sector 0. Bootable file 1 starts at block 256, bootable file 2 starts at block 512 and so on. This is generally not used when you are booting using BOOTEX.
bbus address. For disk, this is the HPIB or SCSI address (0 to 7) of the disk unit that contains the system file. For other devices, including DS and LAN, the VCP ignores the b parameter, but requires a 0 as a place holder if the ff parameter is not zero. On DS (HDLC) and LAN, the destination VCP needs no information about the location of the system file on the source system.
uunit or head number:
Disk | Unit/Head # |
7902 | 0 - 1 |
7906 | 0 - 3 |
7908/11/12/14/33/42/46 (Disk) | 0 |
7908/11/12/13/33/42/46 (CTD) | 1 |
9145/9144 Standalone CTD | 0 |
other CS/80 disk | 0 |
SCSI disk | 0 |
sc | select code of the interface card for the device that contains the system file. |
file | name of the merged system file. This parameter is only used by BOOTEX, and |
| specifies the name of the system file or a BOOTEX command file. If you have |
| installed your system to be booted by BOOTEX, put the full name of the file |
| here. The default name is /SYSTEM/BOOT.CMD if BOOTEX is installed on a |
| file system volume, SYSTEM if BOOTEX is installed on a FMGR cartridge. |
| Omit this parameter when you load via DS (HDLC), LAN, CTD, CTU or |
| PROM. |
SSload and halt. If you append SS to the system file name, the system file is loaded and the computer stops with a VCP prompt (VCP>). A %R or %E in response to the VCP prompt starts execution.
Full details on the boot procedure are contained in Appendix H.
1010 Installing a MemoryBased System