SST SST-1500-RCX-3-1-2 Control output module

Following this message there is a delay to allow you an opportunity to abort the Autoboot process if you wish. To gain control without Autoboot, you can press the BREAK key or the software ABORT or RESET switches. 5. Then the actual I/O begins: the program pointed to within the volume ID of the media specified is loaded into RAM and control passed to it. Autoboot is controlled by parameters contained in the ENV command. These parameters allow the selection of specific boot devices and files, and allow programming of the Boot delay. Refer to the ENV command in Appendix A for more details.At powerup, Autoboot is enabled, and if the drive and controller numbers encountered are valid

ROMboot 

There are two spare EPROM sockets, XU3 and XU4, available to carry user-programmed EPROMs. Therefore, you do not have to reprogram the 187Bug EPROMs in order to implement the ROMboot feature. One use of ROMboot might be resetting SYSFAIL* on an unintelligent controller module. The NORB command disables the function ROMboot is configured/enabled and executed at powerup (optionally also at reset) in one of two ways: a. By the Environment (ENV) command (refer to Appendix A) b. By the RB command assuming there is valid code in the EPROMs (or optionally elsewhere on the module or VMEbus) to support it.

Network Boot Sequence

 1. The Network Auto Boot routine automatically scans for controllers and devices in a specified sequence until a valid bootable device containing a boot media is found or the list is exhausted. 2. If a valid bootable device is found, a boot from that device is started. The controller scanning sequence goes from the lowest controller Logical Unit Number (LUN) detected to the highest LUN detected. (Refer to Appendix C for default LUNs.)Network Auto Boot is a software routine contained in the 187Bug EPROMs that provides a mechanism for booting an operating system using a network (local Ethernet interface) as the boot device.

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