LETTER TO (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B00873A002900020066-0
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: November 15, 2012
• Sequence Number: 66
• Publication Date: August 3, 1970
• Content Type: LETTER

25X1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
In accordance with the requirements on
Task Order No..33, we are enclosing three (3) copies of the Twenty-
Fifth Monthly Letter Report-for the month of July, 1970-covering
the IDT Display Program.
As a part of this report there is, as required, a Financial Status
Report covering this same period.
Engineering Department
NLT:bc
Enclosures (3)
CC-Contracting Officer (1-Encl.)
GROUP-1
Excluded from automatic downgrading
and declassification.
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE
NATIONAL DEFENSA OF THE UNITED STATES-WITHIN THE
MEANING OF THE ESPIONAGE LAWS. TITLE IR. U. S. C..
ECTIONS 793 AND 794. ITS TRANSMISSION OR THE REV-
LATION OF IT3 CONTENTS IN ANY MANNER TO AN Ulf.
AUTHORIZED PERSON IS PROHIBITED BY LAW.
Unclassified-
I...., ~~~1_ rateL from
C,as:;ifie~ erciosures
August 3, 1970
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15 : CIA-RDP79B00873AO02900020066-0
LL1i "FIDENTA
ft o~paS~ chi r
LORD#5,3/37)
IDT DISPLAY PROGRAM (U)
Task Order No. 33
Twenty-Fifth Monthly Letter Report
Month of July 1970
GROUP-1
Excluded from automatic downgrading
and declassification.
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE
^ATTONAL DEFENSE OF.T E UNITED STATES WITHIN THE
MEANIRO OF THE ESPIONAGE LAWS. TITLE 13, U. S. C..
ECTIONS 793-AND 794. ITS TRANSMISSION OR THE REV.
CATION OF ITS CONTENTS IN ANY MANNER TO AN U11-
AUTHOR17EO PERSON IS PROHIBITED BY LAW.
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-01X1
5 I,UIV17IJt111 I I/iL ?
Task No. 33 - 24 June 1968 to 15 Aug. 1970
Monthly Contract Status Report
Financial Status
For Period 27 June 1970 to 1 Aug. 1970
Target Cost
Amount of Contract:
Amount of Obligations and/
or Expenditures This Period:
Amount of Obligations and/
or Expenditures to Date:
Estimated Funds to Complete:
Percentage of Funds Expended
to Date:
Percentage of Work Completed
to Date:
88%
95%
1. Is work on schedule? No
2. Can work be completed in. authorized time? No
3. Can contract be completed with authorized funds ? Yes
The remaining logic, including the exposure controller and video amplifier,
have been debugged.
All subroutines have been punched and assembled and are being debugged.
As reported in our letter of 28 July 1970, delays in the logic debugging have
caused a three-week delay in the projected shipping date. The remaining funds
appear to be sufficient to complete the project.
WORK PLANNED DURING NEXT REPORTING PERIOD
1. Complete software debugging.
2. -Start test program.
CA FIDENTIAL
Target Fee Target Total
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Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
ORD #
TECHNICAL REPORT
IDT DISPLAY PROGRAM (U)
Task Order No. 33
Twenty-Fifth Monthly 'fetter Report'
Month of July 1970
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0
During the past month logic debugging continued and software debugging of the
The logic has been fully debugged, and should require changes only to accommo-
date software problems. The video amplifier used to drive the real time video has
been debugged and installed.
An instruction has been added to open the shutter on the camera. The function
was previously performed by the OTA 11422 instructions. Spurious decoding caused
the shutter to open at random times, thus dictating a separate shutter instruction.
The transfer of the exposure setting, which is the prime function of the OTA 11422
does not suffer random decoding problems because positive DRLIN and RRLIN
responses are required. The new instruction required a new address, since the
instruction set associated with address 22 is full. The amended instruction set is
shown in Table I.
Several routines, both operational and test have been added to the program
complement. The additions to the operational routines include disc write and disc
read subroutines used in conjunction with the Get routine.
The test routines are being used to test the tape transport and to generate test
patterns on the display. The amended program complement is shown in Table H.
2`25X1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
High Speed IDT
Address 238
1. Transfer Data
2. Test for Scanner on Line
3. Clear DRLIN
4. Test for End of Line
Computer Display
Address 228
1. Clear Disc
2. Clear Data Switches
3. Set Counter
4. Data Transfer Computer - Buffer
5. Transfer X Address
6. Transfer Y Address
7. Write Disc
8. Test for End of Operation
9. Read Disc
10. Data Transfer Buffer - Computer
11. Read X Cursor
12. Read Y Cursor -
13. Set Exposure
14. Test for End of Expose
15. Quick Expose
16. Weighted Expose
Address 218
17. Open Shutter
IF a
TABLE I
IDT/DISPLAY INSTRUCTION SET
Function Codes
INA 008
SKS 018
OCP 028
SKS 038
,Function Codes
OCP 008
OCP 018
OCP 028
OTA 038
OTA.048
OTA 058
OCP 068
SKS 078
OCP 108
INA 118
OCP 168
OCP 178
OCP 0088
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873AO02900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0
IDT/DISPLAY PROGRAM COMPLEMENT
Name
Description
Coded
Partially
Debugged
Fully
Debugged
To be
Updated
Operation
al Routines
MAIN
Main program
X
X
LOAD
Load disc from tape
X
X
X
DUMP
Dump disc to tape
X
X
GET
Disc to TTY
X
X
EXPO
Quick or weighted exposure
X
X
SCAN
IDT to tape
X
TABL
Read exposure table from
paper tape
X
X
TAPW
Tape write subroutine
X
TAPR
Tape read subroutine
X
X
READ
Read TTY subroutine
X
TRAN
Transfer
X
PRNT
Print on TTY subroutine
X
PACK
Pack 8 bit words
X
DTOO
Decimal to Octal
X
BTOD
Binary to ASCII
X
LRED
Disc line read
X
LWRT
Disc line write
X
(Continued)
2`25X1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0
 Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0
IDT/DISPLAY PROGRAM COMPLEMENT (Continued)
BAR
GEN
TAPR*
TAPW*
Tape
Dump
Trans-
port
Test
Description
Generates step wedge on
magnetic tape
Tape read, short form
Tape write, short form
Dumps tape records to TTY
Program to test tape transport
-Dummy',
Tape
Read
Dummy
Tape
Write
Generates gray wedge in
buffer area when TAPR subr.
is called
Bypasses TAPW routine when
doing disc dump
Partially
Debugged
Fully
Debugged
To be
Updated
225X1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/15: CIA-RDP79B00873A002900020066-0