GENERAL COMPUTER PROGRAMMING INSTRUCTIONS FOR THE(Sanitized) H-229 PHOTO RECTIFIER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A000600080017-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 34
• Document Creation Date: December 28, 2016
• Document Release Date: February 8, 2002
• Sequence Number: 17
• Publication Date: July 23, 1962
• Content Type: REPORT

Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
Research Report
RR-22
STATINTL
GENERAL COMPUTER PROGRAMMING INSTRUCTIONS
FOR THE
229 PHOTO RECTIFIER
Revised: 23 July 1962
Declass Review by NIMA/DOD
Prepared by.
STATINTL
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
H229 PROGRAM PREPARATION
CONTENTS
1 - Introduction
1.1 General
1.2 Scanning Method
1.3 Image Transformations
2 -
Rectifier Set Up
2.
1
Film Annotation and Alignment
2.
2
Machine Coordinate Systems
2.
3
Punched Tape Program
3 - Computation
3.1 General
3. 2 Preliminary Calculation and Subroutines
3. 3 Computation Sequence
3.4 Sample Programs
4 - Appendix
4. 1 Symbols Used
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
Figure 1. 1 H229 Functional Block Diagram
Figure 1. 2 Scanning Method
Figure 2. 1 Film Annotation
Figure 2. 2 Machine Coordinates
Figure 2. 3 Data Block - Tape
Figure 2.4 Check Block - Tape
Figure 3. 1 Computer Flow Sketch
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
TECHNICAL MANUAL - H229 PROGRAM PREPARATION
1.0 Introduction
1.1 General
STATINTL
This document contains programming instructions for the
H229 Photo Rectifier. Programming a rectification includes
STATINTL
computation of set-up data and punching the program tape. This
discussion is intended for the H229 equipment operator as well as
computing personnel.
H229 Photo Rectifier (frontispiece) is a photo-
graphic printer that exposes the print in a sequence of line and strip
scans. Variation of the image reading pattern with respect to the
printing pattern permits geometrical changes in the image. The control
and electro-optical systems are the basic and unique function in this
I
photographic printer. Figure 1. 1 is a block diagram illustrating equip-
ment functions in the rectification of a panoramic photograph.
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600-080017-0
UNIVERSAL PHOTO iPECT/F/ER ,4N0 PR/LATER
SWEEP
AT TENUATOR
D
XR
TRANSDUCER
YR
DIRECTION
AR
NEGATIVE
PHOTO
MULTIPLIER11
VIDEO
AMPLIFIER
LENS
YP
DIRECTION
, PRINT
ATTENUATOR
LENS
L~~4m
YR INDEX
MOTOR
R TRANSDUCER L
//'~ SYNCHRONIZED
0/--MOTOR
Y R INDEX
SERVO
X R SERVO
AMPLIFIER
SWEEP
GENERATOR
P
TRANSDUCER
Xp DIRECTION
Yp INDEX
MOTOR
SWEEP
ATTENUATOR
COMPARATOR
1XR COMPUTER
TAPE
READER
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
Figure 1-1 .
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
1.2 Scanning Method
The H229 method of oblique rectification by scanning is
illustrated in Figure 1. 2. The print is exposed in a pattern of
contiguous line and strip scans. The rates and amplitudes of all
printing scans are constant to insure uniform print exposure.
Reading scan rates, amplitudes, and orientations are programmed
in a pattern to produce the desired geometry in the uniformly
printed image.
Two coordinate systems are shown in Figure 1. 2. The
natural coordinates (xr, yro xp, Yp) are formed by the principal
point of each image (as the origins) and the principal lines (as the
y axes). The machine coordinates (Xr, Yr, Xp, Yp) are displaced
from the natural coordinates and are related to them by a scale
factor.
The printing scan constants can be summarized as follows:
Xpo - Scan starting position
'L~ Yp s ~Yp - line scan length or strip centerline separation
fsW - line scan frequency (same for reading and printing)
K - Strip scan velocity
p
X - Check interval
The last constant ~Xp is the spacing between raster scan check
positions (Xpl, Xp2, Xp3,
etc. ). These check positions are employed
by the H229 Photo Rectifier control system to improve image placement
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
,LXr
Xr
[-,*-I
, ?,r- ~,,
Principal line
Xp
L Yp - I
ri
Principal Line ' I I
it
?- OBLIQUE NEGATIVE
I!
I i ~ I
7 8 9 Y-0
n-check point
number
Approved For Release 2002/06/17: CII A-RDLP78B04747A000600080017-0
gure
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
1.2 Scanning Method (continued)
The reading scan variables to be programmed for a desired
image transformation are:
Xr - starting and check positions
Ayr
~y r
- Y component of line scan (also strip width)
A Xr - X component of line scan
interval between successive strip centerlines
- strip scan velocity
QX r
Reading scan parameters must be precomputed and punched in a
proper sequence on the operating tape. Synchronization with print-
ing scans and some computation are done in the H229 Photo Rectifier.
1. 3 Image Transformations
Tape computation requires preliminary knowledge of the
analytical transformation between coordinates of,.the original negative
and the desired print. Using the natural image coordinates (Xr,Yr,
Xp, Yp -
see Figure 1. Z) the relation between original and rectified
images are expressed in equations 1. 1 through 1.4.
Oblique Rectification
1
xr:xp . m -
sec t+yp Sint
Yr ^ Yp/m
sect! +yp sint
m
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
1. 3 Image Transformations (continued)
Panoramic Rectification
1
1+ yp}2
mf1
= f tan-1
Parameters in the above equations that must be known or determined
are:
f - camera focal length
m - isopoint enlargement ratio required
t - tilt angle
The above equations will describe most photographic rectifi-
cations likely to be made with this equipment. Lin general, the equip-
went will perform any image transformation that can be expressed by
equations 1. 5 and 1. 6.
xr = xp ? F1 (YP) 1.5
Yr = F2 (YP)
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 0 Rectifier Set-Up and Program Information
2. 1 Film Annotation and Alignment
Rectification accuracy depends upon correct alignment of
a properly annotated negative in the H229 reading platen and precise
knowledge of the analytical image transformation. Fiducial marks
on the, reading platen must be aligned with the principal line of the
photograph and its perpendicular at the edge. Figure 2. 1 shows
four markings xequired on the original negative; to properly align
the Yr axis and the starting position Yr ^ -b + 5" on the platen. Two[
measurements are required (distance b and k).
Dimension b in Figure 2. 1 is the distance from the center of
the first strip scan (Yr = -b) to the principal point yr = 0. The starting
position is the low oblique edge of an oblique photograph or as high as
65? from vertical on a panoramic photograph. Dimension k is the
approximate distance of principal point to the last strip scan center-
line.
Information required to generate the proper rectifying program
tape is
1. Type of photography (panoramic, oblique, other)
2. f - Camera Focal Length (+ 0.001 inch)
3. m - Isopoint Enlargement Ratio ( + 0. 001) 1
4. t - Tilt angle (,j 0.01?)
5. b - (see figure 2. 1) (? 0. 001 inch)
6. k - (see figure 2. 1)
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2192/06/17: CIA-RDP78BO4747A000600080017-0
4
3)
0
_.
L
J3
Approved For Release @002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 1 Film Annotation and Alignment (continued)
The tolerances indicated are those which will be practical within the
theoretical limitations of the photo rectifier if the accuracy of measure-
2. 2 Photo Rectifier Machine Coordinate System
The numerical control system used in the H229 equipment
requires that all the X and Y positions on the original negative (or print)
are represented by positive numbers. This requires that the origin of
machine coordinates be displaced from the principal point (used as the
origin for expressing the image transformation - see equations 1. 1 to
1. 6). Furthermore, X displacements of the image are made by lens
rather than film motion. This introduces a scale factor between coor-
dinates. The relation between film and machine coordinates is expressed
by equations 2. 1 and 2. 4.
Xr = ?xr + a
Yr= Yr + b
Np = 1 (Xp -c)
yp = Yp -d
where 2,5 (exact ratio)
28
a 5. 5
c = 5. 5
b - from annotation (see paragraph 2. 1 )
d - calculation from b
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
Photo Rectifier Machine Coordinate System (continued)
The X and Y positions in the rectifier are numerically
encoded for negative and print. The negative film scan motion is
sychronized with the uniform printing scans by continuous compu-
tation (in the H229) of relative scan positions and by slaving reading
scans to computed positions and rates.
Figure 2. 2 shows reading and printing platens with dots
representing center points of selected line scans performing a specific
image transforrra tion. Starting at scan position Yp = 0 (s = 0),
a strip
is scanned in the + XP direction. The first line scan, made at XP =0
(n = 1) is followed by a set of line scans sweeping a strip. The starting
reading scan (Xr = 0, Yrs) is read from the punched tape at printer
position (Xp = 0, Yps). Subsequent reading scan positions are continu-
ously computed in the Photo Rectifier. For increased accuracy, the
reading scan position is checked by the machine using precomputed
tape data at intervals SXp = 1/2 inch.
Using scan and check point numbers, the values of Xp and Yp
expressed in inches, are given by equations 2. 5 and
Xpn = (n - 1) 3 Xp
Ypn= s 8Yp
2. 6.
From equations 2. 3 and 2. 4 printed image positions referred to the
principal point are
Xpn
Ypn
_ [(n - 1) ($Xp - c)] 2.7
gyp - d 2. 8
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
{
 Ln -D
00 Q
11
e =, AApprovec$F.ar2Release 20D2/06M-4: rIA-F,DIi-a,78 04~4~A000600080017-0
w
XR
YR 8 3
5-0 a = I
XP
READING
PLATEN
i
PRINTING
PLATEN
Approved For Release 2002Iq / j LCI,~.- DP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 2 Photo Rectifier Machine Coordinate System (continued)
The value interval SXp is always 0.5000 inch. The value
of SYp will be 0. 5000 inch or less. The exact value of SYp is
determined by setting thelaagest value of &Yr equal to 0.5000 inch
if it exceeds $Y p,
The H229 Photo Rectifier employs check points from (n = 1
to n = 21). The number of scans S depends upon the length of the
rectified image.
2. 3 Punched Tape Program
Numerical Data required to program each reader scan in
synchronism with the corresponding printing scan is given below:
a. SYrs - interval between the centerline of the (s - 1)th
reading scan and the Sth scan.
b. p Yrs - Y component of reading line scans in the Sth
strip scan.
AXrs - X component of any reading line scan (in the
Xrs
Sth strip) divided by the displacement of its ctrnter
point from the principal line..... This constant for each
reading strip scan is used to compute the value L Xrs
in real time
d. Kp/c - ratio of printing and reading strip scan
r
velocities.
e. Xrs, n - instantaneous Xr position of line scan centers
used for check points.
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 3 Punched Tape Program (continued)
Five On-Off commands are also required from punched tape.
These are Register, Start Scan, Stop Scan, Stop Program, and Sweep
Aspect.
Punched tape is read in the H229 Tape Reader in blocks of
5 x 10 hole positions. Each strip scan requires 22 tape blocks. Tape
block n = 0 contains all numerical constants for the scan. Tape blocks
n = 1 through 21 contain data for checking scan positions in 1/2 inch
printing scan intervals. The number n referes to the check point
(figure 1. 2) and also the tape block containing the numerical reading
check point position. Since each scan requires 22 tape blocks (n = 0
through 21) the total number of 5 x 10 hole position blocks in the program
tape is 22 x (s + 1) where s varies from 0 to S.
Numerical information in each Data Block (that is where n = p)
is shown in Figure 2.3. SYr is expressed by four decimal digits; Yr
LXr
by an eleven bit binary number; and by a?riifiie bit binary number.
xr
In Figure 2.4 Xr is expressed as a seventeen bit binary
0
number and Xp/o as a fourteen bit binary number.
Xr
1z
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
3
ID
10
Sprocket
Holes
A B C if Z~)
1r I S 1r
S 1r i S~r
Cdr 16r
Sir'
/-Y-(r 1 b r
E`(r W r
r
~d7rr I Xf
R
/_~ xY-16Yr
MSD
^Xr Xr
r.~r Mr
* Position never used
R - Register Command
S. A. -Sweep Aspect
MSD - Most Significant Bit
DB - Data Block
BI - Block Indicator
61-If
L*-(r
_6X,_
t~SD
6xr
S. A.
D5
81 1 *
Figure 2. 3
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
OW
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
Sprocket
Holes
Row rJ0.
Z
3
10
A B
fit-
Xr
r
M5o
Xr
Xy
xr
}(r.
Kr
XY
X~
Xr
Kr
)
*
x,
c
*
*
*
K
ea
7(F~
Xi
x~
r
r
x+
r
MSD
*
*
*
XP
x
x P
P
XP
*
*
*
xr
X
x,-
r
Xr
*
*
*
*
*
*
*
START
STOP
STOP
SCAt,J
SCA-J
C72AM
* - Position never used
MSD - Most significant Bit
B.I. - Block Indicator
CHECK BLOCK (n .`~ 0)
Figure 2.4
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 3 Punched Tape Program (continued)
a. 6Yrs representation
The value of jYrs is expressed as a four place
decimal digit. Each digit is coded on the program
tape as a binary-coded decimal number. For
instance, ~Yrs ^ 0. 1068 inch it would be coded:
The value of $Yrs is the only decimally coded quantity
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 3 Punched Tape Program (continued
x b. &Yrs representation
The value of &Yrs is multiplied by a scale factor
(3500). For instance, if A Yrs : 0. 09651 inch
the machine value would be & Yrs = 334 and would
be expressed as follows:
AYr = 00101001100 units
ABC E ) P G 14
C. AXrs representation
The value of &Xr is multiplied by a scale factor
Xr
(10, 000). Consider the case where the maximum
occurs at a 65o viewing angle when Yp = 12 inches.
If the ratio $ Xrs /xrs = 0. 018, the machine value
is 180 expressed as follows:
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2.3 Punched Tape Program (continued)'
4 Xrs
010110100 units
A 9 C D E F c 4
Xps = Xps This value is multiplied by a scale factor
Xrs xrs
of 29 and 7 is subtracted from the product. Flir instance,
if Xps = 7. 361, (Z9 x 7. 361) - 7 = 3669-7. Xpw is
Xrs
Xrm
represented in the tape as the binary rimber 00111001001100
and is stored in a 14-bit register.
17
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
2. 3 Punched Tape Program (continued)
e. Xrs, n representation
This value is calculated from the equation:
Xr s, n m ?xr s, n + a
and i = 25
28
This number is stored by the machine in a 17-bit
register. The numerical value of Xrs, n is expressed
as 213 machine units per inch. For instance, if
Xrs, n = 7. 136, its numerical machine value is 58, 458
machine units and is expressed:
Xrs,n 1-- 01110010001010110
Approve' orKelease'Nad6Wddk-1 O18984'747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
Scan
Check Point
r
b
N
Row
Number
Command
Bits Registered
Number
e
um
is
0
0
SYrs
1st decimal digit
0
1
bYrs
8Yrs
8Yrs
dYrs
2nd decimal digit
3rd decimal digit
4th decimal digit
210 through 2?
25 through 21
0
5
AYrs
20
0
6
&Yrs
0
7
4 X r s
28 through 24
23 through 20
0
8
Xrs
Xrs
0
9
Reserved for ON-OFF Commands
h 212
ou
216 th
0 < n< 23
0
Xrs,n
Xrs,n
Xrs, n
rs.n
g
r
211 through 27
26 through 22
21 through 20
Xrs /?
Xrs
Xps/
Xrs
XPs/5rs
11 11 9
213 through 29
28 through 24
23 through 20
Not used
Not used
Reserved for ON-OFF Commands
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
3.0 Computation
3.1 General
Before a program tape can be generated, the rectification,
to be performed and the image size must be known. The general
analytic transformation to be performed is as follows:
xr = xp ? F 1 (Yp) 1.5
y r z F 2 F? (Yp) 1.6
It is defined by
1. Type of photography
2. Camera Focal Length
3. Isopoint Enlargement Ratio (from altitude)
4. Tilt Angle (in oblique photography)
The boundaries of the image are established by the printing platen
size (92 inch film) and
1. m - Isopoint Enlargement Ratio
2. b - Starting position distance of Yr axis from principal
point
3. k - Approximate end point distance on Yr axis from
principal point
Before tape program computation it is also necessary to know:
1. %Xp - check point interval = 0. 5"
2. BYp - printing strip width
3. N - number of check points 0 < n = N = 21
4. S - number of strip scans required 0 s < S
5. d - starting point on Yp axis
6. q = 1 High Operating Speed
q 2 Low Operating Speed
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
19
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
3.1 General (continued)
7. AYr scale factor - 3, 500
16 Xr /xr scale factor - 10, 000
9. a - Xr starting position
10. c - Xp starting position
Values determined by the H229 Photo Rectifier design are:
RXp = 0. 5000 inch
N = 22,that is, n varies from 0 to 21
a - 5.5 inches
c = 5.5 inches
Values to be determined by preliminary calculations are 8Yp, S, d, q.
The logical structure of program computation and tape readout
also requires knowledge of the sequence of logical and numerical
commands. See Section 3. 3.
3. 2 Preliminary Calculation and Subroutines
Formulas for preliminary calculation are determined by
the equations of rectification (equation 1.5 and 1.6)
Calculation of 8Yp
Panoramic
8Yp = 0. 5000 inch if ml 1
8Yp = 2F2-1 (Yr : 0. 2500 inch) if m< 1
Note F2-1 and F1-1 used for inverse function)
Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
3. 2 Preliminary Calculation and Subroutines (continued)
Calculation of%yp
Oblique
&Yp = F2-1 (-b + 0. 2500") -F2-1 (-b - 0. 2500")
or 0.5000 inch, whichever is less.
Calculation of S
S = Modulate F2-1 (k) - F2 (-b)
Yp
-1
d = -F2 (-b)
Calculation of q
q = 1 (High Speed) if m =
q = 2 (Low Speed) if m < 2
to next higher
numb e r
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
3. 2 Preliminary Calculation and Subroutines (continued)
Preliminary and program computation involves calculation
with functions that will be required computer subroutines. Using
equations 1. 5 and 1. 6, the tape data computation will require use
of the following equations.
Equations for Program Calculations
SYrs
[s ~Yp - d] -F2
1- 0
[(a -
1) ~Yp - d]
Calculation accuracy - to nearest whole nurriber'_
nY [3, 5061
rs
x 104
x FZ + Z) ~Y- d~ -F2(Z - a
p
Calculation accuracy to nearest whole n4mb-r
) SYp
Sr Fl ( s + 2 ) $Y -d F1(s- 2) 8Yp- df
[10, 0 0 0~ x Fl 8Yp-d
Calculation accuracy - to nearest whole nurnbgr
Approved For Release 2002/06/17 : CIA-RDP7`8B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
3. 2 Preliminary Calculation and Subroutines (continued)
Equations for Program Calculations
4? xr(n, a) a In - 1) 8Xp -c x (F1 (s aYP - d)1 -a x 213
Calculation accuracy - to nearest whole tkirtzlb!r
29x3
F`1 Ls SYp-d1
Calculation accuracy - to nearest whole numbpr_
The scale factors shown are required for the coding used for
numerical registers in the Photo Rectifier.
The required calculation will use the following functional
1+2
mf
xP = (n - 1) SXp - c
yp
8Yp -d
F 1(yp) '"m
p sin t
F2(yp)
F Z(yp )
Ftan -1 (yn )
m
cos t
m
aecJ + yo sin t
Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78B04747A000600080017-0
3. 2 Preliminary Calculation and SubroutinC"O (continued)
-1
5a. F2 (Y. r) - mf tan (yr) Panoramic
-T-
- I m Yr sec t
5b. F2 (yr)
cost - Yr sint
Oblique
On-Off Command logic must also be programrr tt into automatic
computations. In terms of check block number
and tape block row number (p) the logic of these
below.
commands is gives,
scan number (s)
Machine Command Logic
Command Logic
9A (register) If n = 0 and p - 9
9B (Start Scan) If n - I and j' - 9
9C (Stop Scan) If n = 21, and p - 9
9D (Stop Program) If n = 21, p = 9, and s - S
9E (Sweep Aspect) If n - 0, p = 9, and
AXr
Xr
is negative
3. 3 Computation Sequence
The sequence of program computation and tape punch is
described by the machine operating program (section 2. 3). This
sequence is collected on the following table.
Approved For Release 2002/06/17 : CIA-RDP78B04747-At100600080017-0
 Approved For Release 2002/06/17 : CIA-RDP78BO4747A000600080017-0
COMPUTATION AND TAPE PUNCH SEQUENCE
2
3
4
12
Command
Start
n.0, p=0
Reg SYrs
n:0, p=l
n:0, p= 2
nwO, pu3
n= O, p=4
Reg. AYrs
nu 0, p:5
n=0, p=6
ns0, p=7
F A
Reg,
L~ Xr
n=0, P=8
n:0, P=9
n*0, p=O
Reg. Xr (s, n)
n*0, p=O
n40, pu 2
n* 0, p-3
nk0, p=4
r '1
o
Reg
Xp
0
Xr J
n* 0, p:5
n*O, p"6
n*0, p=7
n* 0, P. 8
n=1, p=9
Operation
Clear s, n, & p counters
Compute 8Y r s
Punch 1st decimal digit
Punch 2nd decimal digit
Punch 3rd decimal digit
Punch 4th decimal digit
Compute A Y
Punch bits 2IU to 20
Punch bits 25 to 21
Punch bits 20
Compute 1 A Xr-,
L XrJ s
Punch bits 28 to 24
Punch bits 23 to 20
a. Punch reg. command 9A
b. Punch sweep ascpect (9E)
If AXr is negative
1