Setup Command 11: Delete Eeprom Bool; Setup Command 12: Load An Eeprom Boot Into Memory; Setup Command 13: Edit/Create An Eeprom Bool - Digital Equipment MicroPDP-11 Technical Manual

MicroPDP-11 Base Systems
2.5.11 Setup Command 11: Delete EEPROM Boot
This command allows you to delete custom boot programs that you have stored in
the EEPROM. It prompts you for the device name of the EEPROM boot to be
deleted. The ROM code then searches for the first boot program in the EEPROM.
If the ROM code finds the boot program, it deletes the program and moves all of
the following boot programs up to use the space made available by the deleted
program.
2.5.12 Setup Command 12: Load an EEPROM Boot into Memory
This command allows you to load an EEPROM boot program into memory to
examine or edit it. The ROM code prompts you for the device name of the
EEPROM boot.
2.5.13 Setup Command 13: Edit/Create an EEPROM Boot
This command allows you to create a new EEPROM boot program or to edit a
program previously loaded with setup command 12. Use this command to change
the following:
• Device name: Designated by the firmware for the device; for example, disk
unit (DU).
• Device description: Usually the physical name of the device. The maximum
length allowed for this description is 11 characters and spaces.
• Allowable unit number range: The highest unit number defines the allowable
range of valid unit numbers for the device.
• Beginning address of the program in memory: First location of the pro-
gram in memory.
• Ending address of the program in memory: The address of the last byte of
code used in memory.
• Starting address of the program: The address to which the ROM code
passes control.
The command lists the available space in the EEPROM for boots and prompts for
entries. After you have made all changes, the ROM code then enters ROM ODT to
allow you to enter the boot program (see setup command 15). You must use setup
command 14 to save any changes you have made.
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