IBM System/360 20 User Manual

in the DTFSR statement ~tatement num-
ber 20 in Figure 36) the data cards and
the end-af-file card.
6. For the master program:
Press the Start key on the card
reader.
for the slave program:
Press the Start key on the card
punch.
7. Press the Reset key and the Start key
on the printer.
8. Press the Load key on the CPU console.
The slave program should, if possible,
be loaded just before the master program.
If the master program is loaded before the
slave, the slave must be loaded within the
next three minutes, otherwise there will be
a halt with E-S-T-R display 0553 on the
console of the master cpu. If this hap-
pens, the master program must be loaded
again.
After all the data cards have been read
and transmitted, a programmed halt occurs
and code OF10 is displayed on the consoles
of both the master and the slave CPUs.
MANUAL INTERVENTION (SLAVE TERMINAL ONLY)
If the operator at the slave terminal
wishes to suspend operation, he must:
1. Set the Register-Data/Address switches
on the cpu console to the address of
the SAK byte. This address is obtained
from the assembly listing of the slave
program.
2. Set the Data switch to a value other
th'an zero.
3. Set the ~ode switch to STCB ALTER.
4. Press the Start key on the CEU console
to set the SAK byte to the value indi-
cated by the tata switch.
5. Set the Mode switch to PROCESS.
6. Press the Start ~ey on the CEU console.
This will cause a halt, with E-S-T-R
disflay OF20 on the cOI.sole at the
slave terminal and OF30 on the console
at the master terminal.
To resume operation, the operator at the
slave terminal must press the start key on
the CPU console.
When the operator at the master terminal
receives the OF30 display, he should com-
municate with the operator at the slave
terminal, or wait a prearranged time and
then press START on his console to resume
operation.
HALTS AND ERROR DISPLAYS
In addition to the standard BSCA IOCS
halts, there are a number of other halts
that may occur during execution of the
master and slave sample programs. These
halts, together with the restart procedures
are shown in Figure 40.
98 system/360 Model 20 TPS Operating Procedures

IBM System/360 20 Specifications

General

Brand	IBM
Model	System/360 20
Category	Storage
Language	English