Specifications

3.6 Test Descriptions
Table 3–1 describes the system exerciser tests.
Table 3–1 System Exerciser Tests
Name Description
Memory Write/read main memory.
Memory retention Memory refresh circuitry.
Numeric CPU floating point.
Motherboard System motherboard logic.
Console Writes test patterns to the console for visual verification.
Terminal multiplexer Internal/external data loopback and registers.
Serial port (COM1, COM2) Internal/external data loopback and registers.
Parallel port (LPT1) Internal/external data loopback and registers.
Floppy Write/read (destructive) or read-only (nondestructive)
verification. User selectable. Requires that diskette be
installed in device.
Ethernet Send, receive, and verify messages internally and with
other network nodes.
SCSI disk Write/read (destructive) or read-only (nondestructive)
verification. User selectable.
SCSI tape Write/read verification. Requires that tape cartridge be
installed in device.
3.7 Modes
The system exerciser has two modes. The modes are described in Table 3–2.
Table 3–2 System Exerciser Modes
Mode Prompt Meaning
Halt HLT> Tests have not begun or testing is suspended.
Run RUN> Tests are running.
You can run most SYSEX commands in either mode. The exceptions are the
ivp command, which is valid only in the halt mode, and the istep command,
which is valid only at a breakpoint.
3–8 System Exerciser