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Page Title:
SECTION I FUNCTIONAL SYSTEM OPERATION |
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 T.O. 31S5-4-308-1
TM 11-5805-663-14-13
NAVELEX 0967-464-0010
comprising the Processor (figure 2) are as
the stored software program, performs var-
follows:
ious arithmetic and logical operations.
a . Bus Controller
Also, when more than one device is request-
ing INFIBUS access, the CPU aids the Bus
CPU
b.
Controller in resolving the priority of the
access requested via the interconnect
Core Memory Controller
C.
module (ICM).
Autoload
d.
the Core Memory with the INFIBUS, controls
Parallel I/O
e.
the operation of the Core Memory and modifies
INFIBUS addresses before they are applied to
TTY Controller
f.
the Core Memory.
Modem Controller 1
g.
fixed program that controls the operation of
Block Transfer Adapter
h.
the Block Transfer Adapter and Mag Tape
Controller when the operating program or
Mag Tape Controller
i.
utility print program (UPP) is being loaded
into the Core Memory.
I/O Controller
j.
5 - 1 3 . The Parallel I/O interfaces the
Alarm Control and VF Comm Link with the
Combiner Control Logic (CCL)
k.
INFIBUS and transfers bidirectional parallel
Controller
bytes of data between the INFIBUS and
Traffic Data Control
l.
Alarm Control and VF COMM LINK. The
Parallel I/O also controls the lighting of
Register Sender Junctor (RSJ) Con-
m.
most of the alarm and status lamps on the
trol Logic
Alarm and Control Panel and informs the
CPU of certain alarm and status conditions.
Rapid Memory Reload (RMRj Buffer
n.
In addition, the Parallel I/O controls the
Control
operation of the VF Comm Link under con-
trol of the stored software program. In the
Printer Controller
ACOC Group it also enables either VF Comm
0.
Link 1 or VF Comm Link 2.
Modem Controller 2
p.
5 - 1 4 . The TTY Controller interfaces the
Program Maintenance Panel.
TTY with the INFIBUS. Under control of the
q.
stored software program it converts the
The CCL, traffic data a control, RSJ, and RMR
parallel inputs f r o m t h e I N F I B U S t o s e r i a l
functions, although physically part of the Switch
output data t o the TTY and converts serial
Group Processor, are functionally part of the
input data from the TTY to parallel output
Switch Group and are therefore covered in the
data to the INFIBUS. The TTY controller
Switch Group technical manual (refer to
also generateses and receives the control
signals that allow it to send or receive data.
5 - 1 5 . Modem Controller 1 interfaces the
fer to data on the INFIBUS. The INFIBUS is
VF Comm Link 1 with the INFIBUS. Under
a common, time shared, data highway used
control of the stored software program it
as an asynchronous communication link
converts the parallel inputs from the
between the Processor functions and external
INFIBUS to serial output data to the VF Comm
peripheral functions, The Bus Controller
Link 1, and converts serial input data from
detects requests for INFIBUS access and when
the VF Comm Link 1 to parallel output data to
the INFIBUS is available grants INFIBUS
the INFIBUS. Modem Controller 1 also gen-
access to the function requesting the access.
5-2
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