RCA 301, Programmer'S Reference Manual, Page: 204 / 235

APPENDIX C. SUMMARY
Op.
Code Instruction N
A Address
B Address
•
H Sector Write Disc
Normal
Specifies additional
number of sectors to be
written and file selected
HSM address of first
character to be written
Bo
designates first sector to be written to
2
4
of
Bo
= 0, prevents override of Data
Disc Simultaneous instruction
2* of
Bo
=
1,
permits override of Data
Disc Simultaneous instruction
Bi, B
!;
Bj
specifies zone to be written to
I
Block Write Record
Simultaneous
2°, 2 \ 2\ 2"
selects
number of blocks to be
written
2* = 0, selects first file
2* =
1,
se lects second file
HSM address where first
character is to be written
B
0
= Must be zero (0)
Bi
= odd-record returned after operation
Bi = even-record stays on turntable and
arm is placed at beginning of
selected band after operation
B
j
=
1
— block terminates on counting
900 characters
Bj = 0 — count or EB recognition
Bj = addresses cells 1-10
I
Sector Write Disc
Simultaneous
Specifies additional
number of sectors to be
written and file selected
HSM address of first
character to be written
2
3
, 2
2
, 2
1
, 2° bit of Bo de signates 1st sector
to be written
2
4
of
Bo
= 0, prevents override of Data
Disc Simultaneous instruction
2* of
Bo
=
1,
permits override of Data
Disc Simultaneous instruction
Bi, B
2
, Bj
specifies zone to be written to
J Transfer Symbol
to Fill
Selected Symbol Leftmost HSM address
to be filled
Rightmost HSM address to be filled
K
Locate Symbol Left Selected Symbol
Leftmost HSM address
to be searched
Rightmost HSM address to be searched
L Locate Symbol
Right
Selected Svmbol Rightmost HSM address
to be searched
Leftmost HSM address to be searched
M
Transfer Data Left Number (0-44) of char­
acters to be transferred
HSM location of left­
most character to be
transferred
Destination HSM address of first
character
N Transfer Data Right Number (0-44) of char­
acters to be transferred
HSM location of right­
most character to be
transferred
Destination HSM address of first
character
P
Transfer Data by
Symbol Right Selected symbol on which
to stop transferring
HSM location of right­
most character to be
transferred Destination HSM address of first
character
Q.
Logical "OR"
Number (0-44) of char­
acters in each operand
HSM address of LSD
in first operand
(and result)
HSM address of LSD in second operand
•
C-5