http://www.mentasm.com/~mramiga/files/tech/tech/test.htm (Amiga Plus Extra No. 5, 08/1997)
| Amiga Color Error Codes/Signs
What those color flashes really mean and stuff and things....
|
The AmigaOS has built in to it a way to let you know what is wrong if something happens to fail.
When you reset or first start up, the system performs the following test sequence
- 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 interupts.
- Turns on the screen.5. Checks the general hardware configuration. If the screen remains a light gray colours 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.
If anything is wrong a color is flashed upon the screen as a visual result code. These are:
- Passed Test Light Grey 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)
Also the Caps lock light will/may blink to diagnose certain ailments.
- One Blink ROM Checksum failure
- Two blinks RAM test failed
- Three Blinks Watchdog timer failed
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