Epson EQUITY 386/33 PLUS - Manual (Page 132)

Running the Tests
The table below lists all of the available System diagnostic tests
and may refer you to other sections in this chapter for
additional information.
System diagnostic tests
Component Tests Function
System board Basic functionality Tests components such as
Instructions, registers, and
flags of CPU
CPU protected mode Tests protected mode
instructions such as LSL, VERR,
and LAR
Memory
Processor speed
Coprocessor
DMA controller
Interrupt controller
Timer
Real-time clock
CMOS validity
BIOS ROM
Parity
Identifies current clock speed
Tests the coprocessor
Tests memory address and
page registers of DMA
controllers 1 and 2
Tests interrupt mask registers
Compares timer count to RTC
Compares RTC to time 0
interrupt
Tests the CMOS RAM
See ‘Memory Diagnostics”
Tests data path of BIOS ROM
Checks for memory parity
errors
Pattern
Walking 1
Tests for memory read/write
faults
Checks data lines for shorts
and bits that are 1
B-10 Performing System Diagnostics