Welcome, Guest. Please login or register.

Author Topic: Chipset error color codes?  (Read 5065 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline paul1981

Re: Chipset error color codes?
« Reply #14 from previous page: May 14, 2012, 06:19:31 PM »
Quote from: graffias79;53741
Thanks everyone for your help.. very much appreciated.  Ironically I got my 500 to work using these techniques LOL  I'd still like to get my 2000 working.  But that will have to wait a while.  At least the offending battery has been removed!

Again Thanks!

If there's any leakage from the battery onto the motherboard/pins etc then you need to neutralise it with lemon juice...or it will continue to do damage (wouldn't hurt to treat the area just to be safe).
 

Offline number6

Re: Chipset error color codes?
« Reply #15 on: May 14, 2012, 06:55:18 PM »
@thread

2 different writeups I have about startup and colors. Similar.

Quote
(1) Amiga system routine


Amiga system test is a complicated set of routines which it must go
through before you can do any work on it. During the system test the Amiga
is attempting to let you know if the system is well. Here is a list of the
start-up activities:

1. Clear all chips of old data
2. Disable DMA and interrupts during the test.
3. Clear the screen.
4. Check the hardware ....checks to see if 68000 is functioning.
5. Change screen color.
6. Do a checksum test on all ROMS.
7. Change screen color.
8. Beginning of system startup.
9. Check RAM at $C0000,and move SYSBASE there
10. Test All CHIP RAM.
11. Change screen color.
12. Check that software is coming in ok.
13. Change screen color.
14. Setup CHIP RAM to receive data.
15. Link the libraries
16. Check for additional memory and link it
17. Turn the DMA and interrupts back on.
18. Start a default task.
19. Check for 68010,68020, and or 68881.
20. Check to see if there is an exception ...processor error
21. If so do a system reset.

During this system test the Amiga is sending vital information to the
screen with colors. If the system checks out ok, you will see the following
sequence that you have seen so many times.

DARK GRAY: The initial hardware tested OK. the 68000 is running
and the registers are readable.

LIGHT GRAY: The software is coming in and seems OK.

WHITE: The initialization test have passed.


If something is wrong with your system, you may see the following:

RED: Error was found in ROMS.

GREEN: Error found in the CHIP RAM.

BLUE: Error was found in the custom chips.

YELLOW: If 68000 found an error before the error trapping software (GURU)
was running.



Quote
(2) 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

1.. Delays beginning the tests a fraction of a second to allow the
hardware to stabilize.
2.. Jumps to ROM code in diagnostic card (if found)
3.. Disables and clears all DMA and interupts.
4.. 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.
5.. 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:

a.. Passed Test Light Grey Initial hardware configuration tests passed.
b.. Initial system software tests passed.
c.. Final initialization test passed.
d.. Failed Test Red ROM Error - Reseat or replace
e.. Green CHIP RAM error (reset AGNUS and re-test)
f.. Blue Custom Chip(s) Error
g.. Yellow 68000 detected error before software trapped it (GURU)
Also the Caps lock light will/may blink to diagnose certain ailments.

a.. One Blink ROM Checksum failure
b.. Two blinks RAM test failed
c.. Three Blinks Watchdog timer failed


#6
 

Offline Lando

  • Hero Member
  • *****
  • Join Date: Jun 2002
  • Posts: 1390
    • Show only replies by Lando
    • https://bartechtv.com
Re: Chipset error color codes?
« Reply #16 on: May 14, 2012, 09:51:00 PM »
After a couple of decades of owning Amigas I came to the conclusion that do not trust these color codes at all.  Their supposed meaning never seemed to have anything to do with what the actual problem was after I had tracked it down.