Tandy Color Computer 3 TRS-80 User Manual

TECHNICIAN SERIES DIAGNOSTIC SERIES
------------- TANDY COMPUTER PRODUCTS -------------
- COLORS64/BIN -
COLORS64 is a menu driven program, which allows the technician to ensure
that all 64 colors of the Advanced Color Video Chip (ACVC) are displayed.
To load COLORS64:
To execute it:
type
type
LOAD "COLORS64/BIN" and press (ENTER).
EXEC and then press (ENTER>.
The program will then display the menu of tests available:
<l>
= RBG monitor test,
<2>
= CMP monitor test,
<3>
= Exit to Basic.
This program uses interrupts, so run the interrupt tests (IRQTST and
FRQTST) to ensure that the interrupts are functioning properly.
A joystick must be plugged into the right joystick port for this test.
Pressing <1) invokes the RGB test, which programs the color palette
registers for an RGB video monitor, then displays all 64 colors on the
screen in a grid pattern. Use the joystick to move the cursor over one of
the blocks in the grid. The background color of the screen will change to
the color of the block under the joystick cursor. Press the fire button of
the joystick to change the border color of the screen to the same as is
under the joystick cursor. Since this test loads the palettes with RGB
values, it is incompatible with composite video monitors.
Press <BREAK> to exit to the menu.
Pressing <2> invokes the CMP test, which programs the color palette
registers for a composite video monitor, then displays all 64 colors on the
screen. These colors are displayed in rows. Using the joystick, move the
joystick cursor over one of these color blocks, and press the fire button of
the joystick to change the border color of the screen. Since this test
loads the palettes with composite values, it is incompatible with RGB video
monitors.
Press <BREAK) to exit to the menu.
At the menu press (3) exit to Basic.
COLOR COMPUTER-3 DIAGNOSTICS
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Tandy Color Computer 3 TRS-80 Specifications

General

Brand	Tandy
Model	Color Computer 3 TRS-80
Category	Desktop
Language	English