IPC-1600 Diagnostics

IPC-1600 Test Descriptions

Host 64KB Dual-Ported Memory Tests

The host processor dual-ported memory test diagnostics execute in the host processor. These tests write to memory, read the memory, and compare what is read to what was written. The IPC-1600 is held reset and the dual-ported memory is enabled during test execution.

Host/lPC-1600 Interface Tests

The host processor/IPC-1600 interface tests execute in both the host processor and the IPC-1600. The IPC-1600 is reset and the BIOS is downloaded and executed. The host processor sends a Non-Maskable Interrupt (NMI) to the IPC-1600 and the IPC-1600 responds with an IRQ to acknowledge the NMI. The test passes if the interrupt communication is successful in both directions.

IPC-1600 64K Dual-Ported Memory Tests

The dual-ported memory tests execute in both the host processor and the IPC-1600. The IPC-1600 is reset and the BIOS is downloaded and executed. The host processor downloads the diagnostic and transfers control from the BIOS to the test routine. The diagnostic executive in the host processor monitors the test results.

IPC-1600 16K Local Memory Tests

The 16KB local memory tests execute in both the host processor and the IPC-1600. The IPC-1600 is reset and the BIOS is downloaded and executed. The host processor then downloads the diagnostic tests and transfers control from the BIOS to the test routine. The IPC-1600 executes the tests and the diagnostic executive in the host processor monitors the test results.

IPC-1600 FEPOS Integrity Tests

The Front End Processor Operating System (FEPOS) integrity tests execute in both the host processor and the IPC-1600. The IPC-1600 is reset, the BIOS is downloaded and executed, and the FEPOS is downloaded and executed.

The diagnostic executive in the host processor monitors the FEP operating system for test results.

7-8 IPC-1600 USER’S GUIDE

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AT&T manual IPC-1600 Test Descriptions, Host 64KB Dual-Ported Memory Tests