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5.2 DIAGNOSTIC PROGRAMS
Separate groups of diagnostic programs, test equip-ment, and procedures are provided for testing the DVII Modem Control Unit and the DVII Data Handling Section, respectively. Each of the two diag-nostic groups will be discussed separately.
5.2.1 DVll Data Handling Section Diagnostics Five Data Handling Section diagnostic programs are provided: DZDVA, DZDVB, DZDVC, DZDVD, and DZDVF. Because of the complexity of the Data Handling Section, tables are provided herein to cor-relate the functional units tested with the individual tests within each diagnostic program.
A sixth diagnostic, DZDVE, tests the Modem Con-trol section and provides a method of inputting infor-mation concerning the settings of the Synchronous Parameter Selection switches (reference Table 2-5) for the particular DVII being tested. For DVlls not yet configured to a customer's particular require-ments, the diagnostics will automatically assume the following parameters without the need of running the configuration section of DZDVE (starting address 210):
The configuration section of D ZD VE must be run if the DVll has any asynchronous line cards.
Hardware equipment required for the Data Handling Section diagnostics is as follows:
1-2
2-4
2
PO P-ll with 8K core DVII-AA System Unit
DVII-BA, DVII-BB or DVII-BC
Module Extender, W904 (Hex-Height) Modem Test Connector, H325A Multimeter (Triplett or Simpson), Model 630-NA or 260
Oscilloscope (Tektronix), Type 454 or equivalent
X 10 Probes (Tektronix), P6061 or equivalent
5.2.1.1 DZDVA Diagnostic - Tests operation of the programmable registers, the Microprocessor instruc-tions, and NPR operations. The Special Functions
Table 5-2 shows the functional units tested by each test or test group of the DZDVA diagnostic, and includes system logic drawing references. Functional unit names correspond to those used in the drawing descriptions in Section 4.8. Tests performed are as follows (tests are numbered octally):
Tests 1 and 2: The register selection section of the Unibus Interface is tested (Address Deco-der, Register DecoDeco-der, Read Register Selector).
This section is exercised by all DZD VA tests.
Tests 3 - 53: Read/write functions of the pro-grammable registers are tested.
Tests 53 - 57: Read/write functions of the sec-ondary registers in the RAM are tested;
spurious interactions between secondary regis-ters are also tested for.
Tests 121 and 122: The NPR Status register is tested. flag setting, and synchronization functions of the Synchronous Receivers and Transmitters Unit. Table 5-3 shows the functional units tested by each test or test group of the DZDVB diagnostic, and includes system logic drawing references.
5.2.1.3 DZDVC Diagnostic - Performs free-running tests of ROM and RAM operations. ROM contents are verified against a core image. Table 5-4 shows the functional units tested by each test or test group of the DZDVC diagnostic, and includes system logic drawing references. H8612 test connector is required on each M7833 and M7839.
5.2.1.4 DZDVD Diagnostic - Performs NPR char-acter and control byte fetch and interpret operations to test the Microprocessor, the RAM, and the NPR data input interface (NPR Controls, NPR Address register, DATI register). This diagnostic also tests the protocol processing functions of RAM secondary registers. A table of logical units tested by the various tests in the DZDVD diagnostic is not provided because the DZDVD diagnostic tests the micro-program, not the wired logic. H8612 Test Connector is required on each M7833 and M7839.
Test 1: The transmit control byte and trans-mitter "next mode" are tested.
Tests 2 and 3: Transmitter Mark/Sync functions.
Tests 4 - 6: Tests store/discard, BCC inclusion/exclusion, and next mode functions of receive control byte.
Test 7: Tests DLE transmission function of receive control byte.
Test 10: Tests control byte fetch inhibit for both transmit and receive.
Test 11: Tests leading sync-character-stripp-ing function.
Test 12: Tests Microprocessor restart after special character interrupt.
Test 13: Tests operation of marked byte count function for transmit and receive.
Test 14: Tests transmit and receive mode functions.
Test 15: Tests all functions of transmit and receive control bytes.
Table 5-2
Static Tests of DVll Functional Units (DZDV A)
TEST NUMBEP
1 X X
2 ® ® ® x x x x x x x x X
3·20 X X X x ®
21 X X X x ®
22·27 X X X x ®
30·37 X X X x ® ®
40 X X X x ®
41 X X X x ®
42 X X X x ®
VI I 43·52 X X X x ®
-....J 53 X X X X
*
X54-56 X X X X X X X X
57 X X X X X X X X X X
60·61 X X X X X X X X X X X X
62 X X X X
*
X X63 X X X X X
'*
X X x ®64-65 X X X X X
*
X x ®66 X X X X
*
X X X67 X X X X X X X X X
70 X X X X X X X X X X X X
71 X X X X X X X X X
*
®72 X X X X X X X X X X
73 X X X X X X X X X X X
74 X X X X X X X X X X X X X X X
75 X X X X X X X X X X X X x ® X
76 X X X X X X X X x ®
77 X X X X X X X X X X X X
100 X X X X X X X X X X
101 X X X X X X X X X X X X X
102 X X X X X X X X X X X X X X X X
TEST NUMBER 1,2 3·7
10 X
11,12 X
13
14 X
15 X
16,17 X
20 X
21 X
22 X X
23 X
Table 5-3
Synchronous Receivers and Transmitters Unit Diagnostic (DZDVB)
X X X X
X X X X X X
X X X X X X
X
X X
X X X X X X
X X X X X X
X X X X X X X
X X X X X X X X
X X X X X X X X
X X X X X X X X
Table 5-4
X
X X X X X X X X X X
Free-Running Microprocessor Diagnostic (DZDVC)
TEST NUMBER
®
X2,3 X X X X X
4,5 X X X X X
6,11 X X X X X X
12 X X X X X
13,14 X X X X
15·22 X X X X X X
X X X
X X
X X X X X
X X X X X
X X X
X X X X
X X X
X X X
X X X X X X X X
X X X X X
X X X
11-4056
X X X X X X X X X X X X X
5.2.1.5 DZDVF Diagnostic - Attempts to test all programmable logic associated. with the asynchro-nous line card. Any synchroasynchro-nous line cards installed in the DVII will be skipped and untested. Table 5-5 shows the functional units tested by each test of the DZDVF diagnostic, and includes system logic draw-ing references. H8612 Test Connector is required on each M7833. In addition to all tests, there is a special-test (Test 41) to be used to create a specific condition according to the user's preference. In order to use Test 41, load address 200 and start with SW 1 = I (Test No.) type 41 and enter the asynchronous line card parameters for each of the two lines tied together at the H 317C Distribution Panel by a BC03P cable. All DVl1 primary registers and secondary registers for the two selected lines will be printed out and the exe-cution phase will be repeated.
5.2.2 DVll Modem Control Unit Diagnostics Both On-Line (lTEP) and Off-Line (DZDVE) diag-nostics are provided for the DVII MCU. The On-Line diagnostic tests the MCU features with the aid of a modem or direct link to another PDP-II. The features may also be checked by connecting a direct link to another PDP-II. The Off-Line diagnostic uses an H861 test connector to test the entire MCU. In addition, the Off-Line DZDVE diagnostic uses an H325 Test Connector to test the MCU and data han-dling features.
Three test configurations are provided: two Off-Line, and one On-Line: equip-ment configurations (Figures 5-6 and 5-7) to achieve 100 percent testing. Hardware requirements are as follows:
5.2.3 Modem Control Unit On-Line Tests
The On-Line Tests require the equipment con-figuration shown in Figure 5-9. Modems used in the configuration may be Bell 103, 201, 202, 208, 209, or equivalent, and must be of similar type. One modem must be connected to the DV11, the other modem, at the remote.
NOTE
The On-Line ITEP diagnostic may also be used to call other PDP-II test stations and is not restricted to any two given lines of the DVll.
Procedures for each On-Line Test are as follows:
ON LINE - Procedure
1. Assemble hardware per Figure 5-9.
2. Connect a modem to any line.
3. Establish a connection with the remote system or test station.
4. Operate MAINDEC-II-DZDVO (lTEP) per MAINDEC procedures. Use the external loopback mode.
5. Five or more passes are considered a valid test.
5.3 TOGGLE-IN PROGRAM
This test exercises a synchronous line in system test mode (11) using Sync A = 226.8 bits per character,