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TECHNICIAN SERIES
DIAGNOSTIC SERIES
-------------
TANDY
COMPUTER
PRODUCTS
-------------
(MEMC03/BIN - memory test,
continued)
The<*>
key may be pressed
in order
to freeze
the memory test
option
of
"MEMC03", so that
the error
in format ion may be observed.
Press
the <SPACE-BAR> to continue
the memory test.
As the
test
proceeds,
the address
range
being
currently
tested
is displayed,
preceeded
by the current
test
mode ("writing"
or "verifying").
Press
(BREAK> to exit
the memory test
and return
to the menu.
At the menu, press
<3> to exit
to Basic.
- IRQTST/BIN
&
FRQTST/BIN -
IRQTST and FRQTST are designed
to test
the
interrupts
of the Color
Computer-3.
Both of these
tests
are operated
the same but
IRQTST tests
the normal
interrupts,
and FRQTST tests
the fast
interrupts
(FRQ).
IRQTST and FRQTST are machine
language
files,
and must be loaded
and then
executed.
The proper
loading
and executing
of the programs
is shown below.
If testing
normal
interrupts,
load
IRQTST by typing:
type
LOADM "IRQTST/BIN"
and press
<ENTER>.
If testing
fast
interrupts,
load
FRQTST by typing:
type
LOADM "FRQTST/BIN"
and presf
<ENTER).
To execute
either
test:
type
EXEC and press
(ENTER>.
Both tests
begin
the process
by displaying
the
interrupt
to be tested
then
waiting
for the
interrupt
to occur.
If the interrupt
was received,
the
program will
display
"Interrupt
Received"
followed
by "Press
Any Key To
·continue".
If the interrupt
didn't
occur,
then
these
last
two messages
will
not be displayed,
but any key may still
be pressed
to continue
and test
the
next
interrupt.
If an interrupt
is not received,
then
there
may be a fault
in the ACVC or interrupt
circuitry.
The interrupts
tested
include
Timer,
Horizontal
Border,
Vertical
Border,
Serial,
Keyboard,
and Cartridge.
COLOR COMPUTER-3 DIAGNOSTICS
- 4 -
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