Phase #9 - Cpu Interrupt Controller - AT&T 3B2 Off-Line Diagnostic Manual

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Phase #9 - CPU Interrupt Controller
Phase Name:
Type:
Function:
Tests:
Time:
Warnings:
Notes:
Phase #9 Tests
Network Access Unit CPU_4 (cptL4)
Demand
This phase verifies that the internal registers of the INTEL 80186 CPU
Interrupt Controller (IC) are functioning properly.
Tests 1 through 8 - check the IC In-service register.
Tests 9 through 11 - check the Interrupt Request register.
Tests 12 through 20 - check the Interrupt Mask register.
Tests 21 through 24 - check the Interrupt Priority Mask register.
Tests 25 through 36 - check the DMAO and DMAI Control registers.
Tests 37 through 45 - check the INTO and INTI Control registers.
Tests 46 through 51 - check the INT2 and INT3 Control registers.
Tests 52 through 69 - no tests run.
1 second
None
If any test in this phase fails, the following hardware may be faulty:
• INTEL 80186 Microprocessor
• INTEL 80186 Microprocessor interface to the Network Access Unit
Address/Data bus.
Test Numbers: 1 through 8
Function: These tests verify that the IC In-service register is functional.
Procedure: Write a valid data pattern to the register and verify with a read.
Hardware Tested: The IC In-service register is tested.
Data Returned: The failed test number, the actual value, and the expected value are returned.
STARLAN INTERFACE DIAGNOSTICS 15-15