RCA 301 Programmer's Reference Manual page 191

Electronic data processing system
Table of Contents

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Final Register Contents
(A)
= (A)j
f
(B)f - (B),
C o n di t i o n s
1. Inoperable on attempt
to address device.
a. Address Verification
on Select.
b. Card Absent on
Select.
c. Malfunction.
d. Power Failure.
2. Inoperable during
Reading or Writing,
or Echo Check during
Writing.
3. No Block Select given
before Read or Write.
4. Card released prior to
Read/Write due to 32
unserviced revolutions.
5. Preamble Error.
6. Parity Error during
reading.
7. Read-after-Write
error during writing.
8. Block 255 exceeded
during a Write or Read
without A-B Equality.
R e a d i n g o r W ri t i n g
H o w I n d i ca t e d
I n s t r u c t i o n
T o P r o g r a m
T e r m i n a t i o n
Option 1
At time
A„2
X
= 1
detected
(Inoperable)
At time
Option 1
J
A
2
= 1
detected
0
(Inoperable)
At time
Option 1
3
A
2
= 1
detected
0
(Illegal
Operation)
Option 1
At time
2
A
2
= 1
detected
0
(32 Unserviced
Revolutions)
Option 1
At time
A
2° = 1
detected
0
(Parity)
Option 1
Upon comple­
A
2° = 1
tion of in­
0
(Parity)
struction
At time
Option 1
A
2° = 1
detected
0
(Parity)
At time
Option 1
4
A
2
= 1
detected
0
I n d i c a t o r
C l e a r a n c e
Manual Reset
When addressing a unit with a
Select instruction, the 8-10ms. in­
by operator
dication will also be given.
Manual Reset
by operator
Next Read or
Write Select
When uncon­
ditional Card
Removal com­
mand is
1
g iven
Instruction is terminated immedi­
Next Read or
Write
ately.
Indicated as soon as error is de­
Next Read or
Write
tected.
Indicated as soon as error is de­
Next Read or
Write
tected.
Next Read or
Write
C o m m e n t s
XV-11

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