Amiga Video Toaster
/ Flyer FAQs
System Errors & Other Problems
Amiga System Startup Colors
Product: Toaster Flyer Lightwave
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:
||CPU Exception Before Bootstrap
Code is Loaded
||Bad Chip RAM or Agnus (check seating
Constant white is failure of CPU.
Or as taken from the Amiga 4000 Service Manual:
||Initial hardware configuration
||Initial system software tests
||Final initialization test passed.
||ROM Error - Reseat
||CHIP RAM error (reset AGNUS and
||Custom Chip(s) Error
||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.
||ROM Checksum failure
| Two Blinks
||RAM test failed
||Watchdog timer failed
||A short exists between two row
lines or one of the seven special keys (not implemented)