Sense Bit; Resets (Integrated 1403); 2:36 External To Cpu Facilities (1403); Pri (Print Line Buffer Data-In) - IBM 2025 Maintenance Manual

Processing unit
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Data check nonnally indicates irrfrcfer data
in the data record sent to be printed, tut
the
res
tatle may have teen loaded
irrt:roperly.
Provide an operator message and exit
from this error recovery procedure.
The
ot:erat or should then:
1.
Accept the record and indicate that the
applicaticn program is to proceed
without further retry of the command,
or
2.
cause the application program to
restart from a logical i:;cint.
2.33.6 SENSE BIT 5
Not used .•
2. 33. 7 SENSE BIT
6
Net us ed.
2 .33 .8 CHANNEL
9
(SENSE BIT
7)
The carriage trushes sensed channel
9
during the previous carriage space.
Accei;:t
the record and indicate that the program
is
to proceed without further retries cf the
ccrrmand.
local installation practices may
indicate ether action to te taken.
2.34, USE
~ETER
(1403)
The use rreter for the integrated 1403
printer is conditioned when the t:rinter is
ready and a write operation is performed.
The meter remains conditioned until the
carriage space or restore key is Cferated.
The use meter records tirre when it is
ccnditicned and the CPU customer use meter
is operating-.-
2.35 RESETS (INTEGRATED 1403)
A FOWer-on reset places the integrated 1403
in a reset state; all 1403 check circuitry
is res et, and the 1403 is placed in the
not-ready state.
A systerr reset t:laces the
1403 in the same condition as a power-on
reset, except that if the 1403 is ready
when the system reset is given, it rerrains
ready after the system reset is completed.
System reset should not be given while a
printer operation is in progress because
the results of the operation are
unpredictable.
2-20 (7/69)
2. 36 EXTERNAL TO CPU FACILITIES ( 140 3)
2.36.1 PR! (PRINT LINE BUFFER DATA-IN)
This 8-bit register is used during
diagnostic operations to provide· data from
the PLB to the CPU data flow.
A move word with AS-decode=B is used to
move data from PRI to lccal storage.
2.36.2 PRI' (PRINI' LINE BUFFER ADDRESS
REGISTER DATA-IN)
This 8-bit register is used to send PIB
addresses to the CPU data flow during a
diagnostic operation.
A move word with A5-decode=A is used to
move the address f rorr PRT tc local storage.
2.36.3 PRS (1403 SENSE/STATUS CONDITICNS)
The AS-decode=E for a move or branch Con
condition or on rr,ask) wcrd accessing this
external facility.
Bit significance is:
PRS
Bit Name
-0- Device-end
1
Print ready
2
Channel 9
3
Channel 12
4
Initial ready
5
Harrmer check
6
Parity check
7
Print request
Significance if Bit On
Device-end has occurred.
The printer is in the
ready state.
A channel-9 punch has
been sensed in the
carriage tape during a
Sface (net skip)
operation.
A channel-12 hole has
been sensed in the
carriage tape during a
Sface (net skip)
operation.
The Fri nter has gone
f rcrr the not-ready to
the ready state.
A
hammer check has been
detected.
A parity check has been
detected during a PLB
readout or store.
Set on when device-end
occurs for a command,
or when the printer
goes from the
net-ready to the ready
state, or if
channel-end was queued
by the channel, or if
the diagnostic request
gate latch is on and
the f rinter clock is
at time 7-0.

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