The primary purpose of TPG interface (TPGITF) software is to create test patterns, according to a mathematical model, for a real device. In order for the device actually to be tested or to be accurately simulated, a means is required to transform the TPGITF generated test into forms acceptable as input to logic test equipment or to a software logic simulator. The MACRODATA-200 Logic Test System and the LOGSIM logic simulator are the particular systems supported by the TPGITF software. A description is presented of the TPGITF software processor. It is assumed that the reader is familiar with the TPG, LOGSIM, and TOIL systems. Flow charts are given

Pitts, E. R.

English

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https://ntrs.nasa.gov/search.jsp?R=19760021774 2020-03-22T14:41:28+00:00Z
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NASA CONTRACTOR
REPORT
NASA CR-149949
(NASA-CR-149949)
	 TPGITF US'ER'S MANUAL (MES
Computing, Inc.)	 11 p HC $3.50
	 CSCL 099
N76-28862
Unclas
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TPGITF USER'S MANUAL
By L. R. Pitt 3
j
M&S Computing, Inc,
P. C. Box 518,9
Huntsville, Alabama 25805 	 i
,July 26, 1076
	 1
^ ;	 AEG 197b
N lN4Uf gR{UtCl1. ,,,
P._5 r
Prepared for
GEORGE C, MARSHALL SPACE FLIGHT CENTER
Marshall Space Flight Center, Alabcma 25812
TECHNICAL. RVPORT STANDARD TO F t PAuE
REPORT NO, 2, GOVERNMENT ACCESSION NO- 3	 RECIPIENT'S CATALOG NO.
NASA C11-149949
TILE ANO SUB T ITLE 6.	 REPORT DATE
July	 26,	 1976
a	 PE RFORMING ORGANIZATION COOKTPGITF USER'S MANUAL,
I AUTHOR($) B. PERFORMING ORGANIZATION REPrAr a
E.	 R.	 Pitts 76-0025
g PERFORMING ORGANIZATION NAME AND ADDRESS 10,	 WORK UNIT NO,
M&S Computing,	 Inc. —11.	 CONTRACT OR GRANT N0. 
P.	 O.	 Box 5183 NASB-31358 
Huntsville, AL	 35805
_
13. TYPE OF R[POR'. di PtRIOD COVERED
Contractor ReportSPONSORING AGENCY NAME AND ADDRESS
National Aeronautics and Space Administration
Marshall	 Space Flight Center, Alabama 	 35812 1•1.
	
SPONSORING AGENCY CODE
EC45
IS. SUPPLEMENTARY NOTES
Electronics Development Division, Electronics and Control Laboratory
Design Techniques Branch
I$. ABSTRACT
Presented is a description of the TPG Interface	 (TPGITF)	 Software.	 This processor
has been developed to utilize the test patterns generated by the T pc, software to
generate excitation input for the LOGSIM simulator and to generate TOIL test sequences
for the MACRODATA-200 LSI 'fester.
It	 is assumed that the reader 13 familiar with the TPG, 	 LOGSIM,	 and TOIL systems;
no attempt is made therefore to describe any of these systems unless 	 it is peculiar
to the operation of the D.JANAL software.
KEY WORDS 18,	 DISTRIBUTION STATEMENT
Unclassified-Unlimited
-
^"t	 'v►
Director, E&C Lab
19 SEMI -4ITY CLASSIF,(of this report) 20 SECURITY CLASSIF, (of thin p"e) 21.	 NO. OF PAGES 22,	 PRICE
Unclassififfl Unclassified it NTIS
MSFC - Norm 3212 %-tr y
 berember 1977)
	
Fnr sale by National Technicai Information Service, Springfield, Virginia 221S]
PREFACE
i
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i
i
Presented is a description of the TPG Interface (TPGITF) Software.
TMs processor has been developed to utilize the test patterns generated by
the TPG software to generate excitation input for the LOGSIM simulator and
to generate TOIL test sequences for the MACRODATA-200 LSI TestP..
It is assumed that the reader is familiar with the TPG, LOGSIM, and
TOIL systems; no attempt is made therefore to describe any of these systems
unless it is peculiar to the operation of the DJANAL software.
Prepared by-
E. R. Pitts
Approved y:
X
K. H. Schonrocic
r
3.
ii
1.	 INTRODUCTION
The primary purpose of the TPG software is to create test patterns,
according to a mathematical model, for a •,eal device. In order for the de-
vice actually to be tested or to be accurately simulated, a means is required
to transform the TPG generated test into forms acceptable as input to logic
test equipment or to a software logic simulator. The MACRODATA-200 Logic
Test System and the LOGSIM logic simulator are the particular systems sup-
ported by the TPGITF software.
The ability of the MD-200 logic tester to retrieve Test-Oriented Inter-
active Language (TOIL) commands from an off-line recorded magnetic tape
provides the essential link between the TPG system and the device under test.
The MD-200 operator, after issuing the appropriate test setup commands, can
instruct the TOIL software to accept commands from the magnetic tape unit by
using the "DIRECT" directive. Once control is given to the magnetic tape, the
test will be executed automatically according to the commands generated by the
TPGITF software. Since the MD-200 hardware has only limited capability for
representing "don't cares," TPGITF will produce a separate test sequence for
each device output. The random bit mask (register 0) will be utilized to ignore
device response at those times indicated by the TPG output. An option has been
provider! in the TPGITF program for the entire set of tests to be executed before
control is given back to the operator or fnr control to be returned to the operator
following test setup for each output. In the latter case, the operator is obliged
to invoke test execution by using the TOIL 'EXECUTE" directive. Following exe-
cution of the lest, he may cause the next test setup to be loaded by issuing another
"DIRECT" directive to magnetic tape. Since the TPGITF program generates
"line modification" commands to change the test setup, it is imperative that the
operator follow the instructions outlined in Section 2.4. Failure to do so will
cause the wrong test lines to be modified and certainly will produce unpredictable
and erroneous results.
When interfacing for LOGSIM, the TPGITF software deals only with the
device inputs to create LOGSIM "GENT' cards. One or more "GENF" cards
will be produced for each device input. The collection of "GENF" so produced
may be merged subsequently with an appropriate model deck for the device with
which a logic simulation may be obtained.
i	
2.	 OPERATING INSTRUCTIONS
This section consists of instructions for preparing TPGITF input infor-
mation, a description of the output produced by TPGITF, and job setup instruc-
tions for running on the Sigma 5 computer. Also presented is the sequence of
TOIL commands the operator must execute prior to directing the MD-200 to
obtain input from magnetic tape. Presented in Table 2-1 is summarizing infor-
mation for each of the files utilized and produced by the TPGITF program,
	
2. 1	 Input Files
TPGITF utilizes a control input deck and three of the files produced by
the TPG software. The format and content of the control input deck is shown in
Tables 2-Z and 6-3 for MD-200 and LOGSIM interfacing, respectively. The
three TPG files required are the INPUT processor output file, the OVERLAY
processor output file, and the SIMULATOR output file. Note that running of the
TPG SIMULATOR is required in order to obtain all required files. .
	
2,2	 Output Files
Output generated by TPGITF consists of a file appropriate for use- as input to
the target system (MD-200 or LOGSIM) and list output which provides a hardcopy
of the results of the process, Output generated for the MD-200 consists of TOIL
commands necessary to test the device in accordance with the results produced
by TPG. The sequence of commands to be expected is diagrammed in Figure
2-1. Output produced for LOGSIM consists simply of "GENF" cards in which the
zero-one bit patterns have been mapped into the required LOGSIM format.
	
2.3	 Sigma 5 Job Setup Instructions
Presented below is the deck setup required to execute TPGITF on the
Sigma 5 computer under the CP-V operating system.
!JOB USER, ACCOUNT
! ASSIGN F:1, ( FILE, TPGOUTI ), (IN)
!ASSIGN F: Z, (FILE, TPGOUTZ), (IN)
!ASSIGN F:?, (FILE, TPGOUT3), (IN)
!ASSIGN F:5, (DEVICE, CR), (IN)
!ASSIGN F:6, (DEVICE, LP), (OUT)
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MINPUT DECK FOR MD-200 :NTERFACE
Card	 Field
I	 1-6
8
1-4
5-8
Description
Enter "MD-200" in cc. 1-6
Blank for fully automatic test
sequence. Non-blank for semi-
automatic test sequence
TPG USER Node Number
MD-200 register number to which
user rode is to be assigned
Repeat Card Number 2 to fully
specify register assignments
Table 2-2
4
LINPUT DECK FOR LOGSIM INTERFACE
Card Fit-ld Description
1 1-6 Enter "LOGSLM" in cc. 1-6
9-12 Time interval between logic
levels
2 1- 4. TPG USER Node Number
5-12 Name that is to be assigned to
user node number
Repeat Card Number 2 as
required to assign a name to all
user node numbers
-	 -	
i
i
TOIL COMMAND SEQUENCE
START
(Operator Rives control
to magnetic tape)
Load Test
Pattern
Registers
Set Device
Ou':put to
Next Registe
Set Random
Bit Mask for
Don't Cares
Pest
1 u1lY	 Mode	 S eriii-Automatic	 / Automatic
Command	 Return
TOIL, to	 Control to
Execute	 Operator
Vest (Operator returns
control to magnetic
tape)i
^!\11\
No	 Outputs
Tested
Y
Return
Control to
Operator
Figure 2-1
6
!ASSIGN F-.7, (FILE, TPGITFOUT), (OUT), (SAVE)
! RUN (LMN, TPGITF)
! DATA
CARD INPUT DECK
1 FIN
Where;
TPGOUTI is the output of the TPG INPUT processor
TPGOUT2 is the output of the TPG OVERLAY processor
TPCOUT3 is the output of the TPG SIMULATOR
TPGITFOUT is the output from TPGITF
2.4	 MD-200 Test Setup Procedure
As mentioned previously, the MD-200 operator must set-up the tester
in a precise manner for the TPGITF generated test sequence to work properly.
This requiren+ent is due to the fact that TOIL line number modifications are
used to change test parameters ae each separate output is tested. Presented
below is the procedure recommended for proper integration of the TPGITF
generated test sequence.
0	 In response to first "YES SIR", execute a GO TO MEN
directive.
0	 Cycle through the IDEN sequence responding to TOIL
prompts as is appropriate.
o	 In response to second "YES SIR", execute a GO TO LOCI
directive.
o	 Cycle through the LOCI sequence responding to TOIL prompts
to identify device inputs..phase clocks, etc. , to properly set-
up test. Note that the random bit mask option must be answered
wirl-. : YES.
7
1 ^'i
o	 In response to third "YES SIR", execute a
DIRECT = MAC directive.
At this point, depending on whether fully automatic or semi-automatic testing
was chosen when TPGITF was run, the entire test for the device will be run
or the MD-200 will be set-up for execution of the test for the first output reg-
ister. If the former was chosen, no further special instructions are required.
If the latter option was chosen, the operator issues the following commands
repetitively until all outputs have been tested.
o	 In response to "YES SIR S ', execute an
EXECUTE LINE 1 THRU LINE 999 directive.
o	 In response to 11 YES SIR", execute a DIRECT = MAG
directive.
2.5	 Preparing the MD-200 Tape
Since the MD-200 tape handler requires that the tape be formatted in
ASCII code, a means must be provided to convert the code o: the host comput-
er to that required for the tape. A separate program for the conversion to
ASCII has been prepared for execution on the Sigma 5 computer and is included
in the TPGITF delivery package. This program or any other that is capable
of writing an ASCII coded tape may be used to prepare the MD-200 tape. The
job deck required to run the supplied program is presented below.
I JOB USER, ACCOUNT
ILIMIT (TIME, 5), (9T, 1)
!ASSIGN F:5, (FILE, TPGITFOUT), (IN)
!ASSIGN F:1, (DEVICE, 9T), (OUT), (SN, M200), (BCD)
!RUN (LMN, ASCITW )
! FIN
8
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