Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 48

DEADSTART TESTS
The equipment required for IOU hardware initialization is
CC545 console or
CC555 console or Viking X(721)
Eight deadstart programs are stored in ROMs and -RAMs (CK pak) for use to
initialize or test the IOU hardware. Short or long deadstart sequence can be
selected by entering either L or S into the console. Short deadstart sequence
executes one of the eight deadstart programs that is currently displayed on
the screen. Long deadstart sequence executes a fixed test program that is
stored in the ROMs (CK pak); if no error is detected, a short deadstart
sequence is automatically initated. When LOS is completed, CTI loads EDS into
PPOO from the CTI device. EDS is similar in structure to LOS. It checks the
hardware needed by CMSE that was not tested by LOS. EDS must be run after LOS.
The short deadstart tests stored in four RAMs and four ROMs are short
deadstart programs 0 through 7.
• Programs 0 through 2 are deadstart programs 0 through 2. They are user
programmable scratch programs.
• Program 3 is a programmable deadstart program reserved for power
recovery ..
• Program 4 contains the lower chain test which tests PP-to-PP
communication over channels 01 through 11.
• Program 5 contains the upper chain test which tests PP-to-PP
communication over channels 20 through 31.
• Program 6 is for master clear and clear errors.
• Program 7 is for testing the CC545 display.
Table 4-1 shows the deadstart display keyboard options and maintenance
commands.
4-14
60469500 A