INITIATE OPERATIONAL PROGRAMS

Figure 8-31.—Example of diagnostic error codes. code. Figure 8-31 is an example. You can use this error is loaded, initialized, and started. The operational pro- code for fault analysis. gram is tailored to meet the command’s operational require- EXECUTE BOOTSTRAP.— Execute bootstrap ments or application. It is important that you know the works in a manner similar to the function on software capabilities and limitations based on your hardware. Be sure your system is configured correctly. minicomputers. An NDRO is used to perform this function. The NDRO is tailored at the factory and will EXECUTE AUTO RESTART OPERA- select a particular peripheral device (disk, tape, and so TIONS.— Auto restart operations are used when power forth) based on the position of the bootstrap switches is restored after a power loss. (0, 1, or 2) located on the computer’s controlling panel (maintenance, control, display control, or remote unit). To execute bootstrap, select bootstrap switch 0, 1, or 2 and depress the start switch (fig. 8-30). NDROs on mainframes may also be designed to perform a variety of tests or other functions that may be selected by use of the DIP switches. EXECUTE DIAGNOSTICS.— External diag- nostics can be loaded into the computer, executed, and controlled using an external control device. They can also be loaded into the computer from a Peripheral (disk or magnetic tape unit) but initiated and controlled by the computer. These diagnostics are very thorough. They offer the option of testing all or specific sections INITIATE OPERATIONAL PROGRAMS.— of a computer. They are more comprehensive than the After the computer is booted, the operational program BITs. Figure 8-32 shows an example of a defective card Figure 8-32.—Example of a defective card index (DCI). 8-25