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System/370 Model 145 (cont'd)
To IMPL
1.
Ensure that forms are inserted in the console printer and the *370 micro-
program disk is mounted in the console file.
2.
Set all rotary switches to their normal operating position. Ensure that the
ADDRESS COMPARE CONTROL toggle switch is set to SYNC/NORM.
3.
If power is not on, press POWER-ON key. IMPL occurs automatically. If
power is on, press START CONSOLE FILE key
to
initiate the IMPl.
4.
The IMPL REQD and CF POWER ON indicators tum on. The START
CONSOLE key turns red, then white, as the console file starts reading.
5.
The console file powers off automatically when control storage is loaded, and
the CF POWER ON indicator and START CONSOLE FILE key light turn
off.
The System Reset routine executes, the IMPL REQD ,,,dicator turns off, and
the CPU enters the soft·stop state {MAN indicator onl. IMPL operation takes
approximately 35 seconds.
To IPL
1.
Load and ready the System Resident (SYSR ES) device.
2.
Dial the address of the !PL device into LOAD UNIT ADDRESS switches
FGH.
3.
Press the LOAD key. After an automatic system reset, the IPL operation
starts and the LOAD indicator turns on.
4.
When the IPL is complete, the LOAD indicator turns off and the system
either executes the program or enters the soft-stop state, awaiting your
action.
Loading the Secondary Nucleus (OS)
1.
Place the program to the desired I/O device and make that device ready.
2.
Set the three LOAD UNIT ADDRESS switches to the SYSRES address.
3.
Set RATE switch to INSTRUCTION STEP.
4.
Press LOAD button. Load light comes on and system goes into manual state.
5.
Press Alter/Display Mode on PR-KB. Enter in location X'08' the EBCDIC
character to be appended by lEAN UCO. The two hex digits may range from
F2 to F9 (determined by last character of nucleus name).
6.
Set RATE S1.vitch to PROCESS.
7.
Press START.
To Display Registers, PSW, and Main Storage
Display operations can be performed from the PR·KB.
1.
Press the STOP key or set the RATE switch to either INSTRUCTION STEP
or SINGLE CYCLE HARD STOP.
2.
Press the ALTER/DISPLAY key.
3.
Wait for both ALTER/DISPLAY MODE and PROCEED indicators to tum
on.
4.
Select from the Alter/DISPLAY chart below the appropriate 2-character
mnemonic, and type the mnemonic and address of the information to be
displayed.
5.
When zeros are typed to the left of the address, a ne\l\l line operation is
started automatically. When zeros are not inserted, the RETURN key must
be pressed.
6.
To continue program processing after the display operation is completed,
return the RATE switch to PROCESS and press the Start key.
Page 3-9
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