Amiga Video Toaster
/ Flyer FAQs
Amiga Flyer
System Errors & Other Problems
Amiga System Startup Colors
Product: Toaster Flyer Lightwave
Platforms: Amiga
Problem: Amiga system will not boot.
Screen flashes colors or keyboard lights flash.
You may notice that when you turn on or reset your
Amiga a few different colors flash by. These actually
mean something. Here you go:
| Red |
Bad ROM |
| Yellow |
CPU Exception Before Bootstrap
Code is Loaded |
| Green |
Bad Chip RAM or Agnus (check seating
of Agnus) |
| Black |
No CPU |
| White |
Expansion passed |
| Grey |
CPU Passed |
Constant white is failure of CPU.
Or as taken from the Amiga 4000 Service Manual:
Passed Test
| Light Gray |
Initial hardware configuration
tests passed. |
| |
Initial system software tests
passed. |
| |
Final initialization test passed. |
Failed Test
| Red |
ROM Error - Reseat
or replace |
| Green |
CHIP RAM error (reset AGNUS and
re-test) |
| Blue |
Custom Chip(s) Error |
| Yellow |
68000 detected error before software
trapped it (GURU) |
The system performs the following test sequence:
-
1. Delays beginning the tests a fraction of a
second to allow the hardware to stabilize.
-
Jumps to ROM code in diagnostic card (if found)
-
Disables and clears all DMA and interrupts.
-
Turns on the screen.
-
Checks the general hardware configuration.
If the screen remains a light gray colors and
the tests continue, the hardware is OK.
If an error occurs, the system halts.
-
Performs checksum test on ROMs.
If the system fails the ROM test, the screen display
turns red and the system halts.
Keyboard
| One Blink |
ROM Checksum failure |
| Two Blinks |
RAM test failed |
| Three Blinks |
Watchdog timer failed |
| Four Blinks |
A short exists between two row
lines or one of the seven special keys (not implemented) |
