Amiga 1000 aqua/light blue screen

T_hairy_bootson · 19 April 2009, 11:05

Pulled my two a1000s out of storage as I am planning on selling one to a friend.

One of them works fine but the other displays a light blue/aqua screen after power cycle and this just continues to loop never making it to the kickstart screen. Any ideas?

edit: already tried opening it up and pushing down firmly on all the socketed chips.

prowler · 19 April 2009, 11:09

Hi T_hairy_bootson,

Sounds like a floppy drive problem. I got that colour screen when I tried to boot the Sanity Arte demo without nRDY connected to the floppy drive when testing Stedy's Amiga to PC Floppy Drive Adaptor. As soon as I connected the nRDY signal, the demo booted.

Check your floppy drive connections.

prowler

T_hairy_bootson · 19 April 2009, 11:35

hmmm, I did try swapping the disk drives with the internal drive from a 1010, but I havent tried swapping the connectors. What do you mean by nRDY?

prowler · 19 April 2009, 11:45

Quote:

Originally Posted by T_hairy_bootson

What do you mean by nRDY?

I'm not sure, but it's a signal which is required by Amiga floppy drives, but is missing from Escom A1200s because they are fitted with PC floppy drives, which don't require the signal. To make the Escom A1200s compliant with Amiga floppy drives you have to get the signal from pin 1 of the 23-way D-type external floppy drive socket and connect it to pin 34 of the internal floppy drive motherboard header.

When this signal is absent and the machine is fitted with an Amiga floppy drive instead of the original PC floppy drive, the light blue / cyan screen appears when you try to boot the Sanity Arte demo disk.

This is the same colour screen you are seeing, so it made me think of the possibility that your floppy drive connection is loose and causing the problem.

prowler

Toni Wilen · 19 April 2009, 12:10

A1000 boot rom does lots of hardware tests (much more than "real" ROM) and puts (undocumented) colors on screen if problems are detected.

Calgor · 19 April 2009, 12:28

According to the Amiga Guru Book: turquoise (RGB = $0CC) - RAM failure in the Kickstart WCS (A1000 only).

Apparently the concluding diagnostic is the A1000 boot jingle so I am guessing you didn't hear that.

Toni Wilen · 19 April 2009, 12:45

Does it have daughterboard? Could be problem with daughterboard and mainboard connections. (early A1000s have separate daughterboard for Kickstart RAM)

T_hairy_bootson · 19 April 2009, 13:36

No daugtherboard sadly and I didnt have sound plugged in when I tested it. By appearance it passed the jingle part and failed just as the floppy drive was supposed to come alive. So I will try my other A1000 disk drive when I get some time to pull it apart again.

edit: Just tried sound and no boot jingle.

It is definetely turquoise so you may be onto something there Calgor...

Any ideas how I can fix this?

r.cade · 19 April 2009, 17:29

If the WOM is bad, then I would suggest using one of the old hacks to wire in a real Kickstart ROM.

It will save you time booting that disk every time you turn it on, also.

19 April 2009, 11:05	#1
T_hairy_bootson Workbitch 1.3 Join Date: Oct 2001 Location: Melbourne, Australia Age: 46 Posts: 2,084	Amiga 1000 aqua/light blue screen Pulled my two a1000s out of storage as I am planning on selling one to a friend. One of them works fine but the other displays a light blue/aqua screen after power cycle and this just continues to loop never making it to the kickstart screen. Any ideas? edit: already tried opening it up and pushing down firmly on all the socketed chips.

19 April 2009, 13:36	#8
T_hairy_bootson Workbitch 1.3 Join Date: Oct 2001 Location: Melbourne, Australia Age: 46 Posts: 2,084	No daugtherboard sadly and I didnt have sound plugged in when I tested it. By appearance it passed the jingle part and failed just as the floppy drive was supposed to come alive. So I will try my other A1000 disk drive when I get some time to pull it apart again. edit: Just tried sound and no boot jingle. It is definetely turquoise so you may be onto something there Calgor... Any ideas how I can fix this? Last edited by T_hairy_bootson; 19 April 2009 at 13:41.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
blue screen of death	residuum	New to Emulation or Amiga scene	12	22 May 2007 17:50
Blue startup screen instead of purple	mywetpants	support.Hardware	4	20 March 2007 10:27
Blue screen in UAE	NOB	support.WinUAE	3	02 September 2006 20:49
Crazy Cars 1 blue screen	Tim Janssen	support.Games	2	15 May 2005 18:37
WinUAE 8.17,r3 'Blue Screen' Problem	fil	support.WinUAE	28	13 December 2002 14:57

19 April 2009, 11:09	#2
prowler Global Moderator Join Date: Aug 2008 Location: Sidcup, England Posts: 10,300	Hi T_hairy_bootson, Sounds like a floppy drive problem. I got that colour screen when I tried to boot the Sanity Arte demo without nRDY connected to the floppy drive when testing Stedy's Amiga to PC Floppy Drive Adaptor. As soon as I connected the nRDY signal, the demo booted. Check your floppy drive connections. prowler

19 April 2009, 11:35	#3
T_hairy_bootson Workbitch 1.3 Join Date: Oct 2001 Location: Melbourne, Australia Age: 46 Posts: 2,084	hmmm, I did try swapping the disk drives with the internal drive from a 1010, but I havent tried swapping the connectors. What do you mean by nRDY?

19 April 2009, 12:10	#5
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,517	A1000 boot rom does lots of hardware tests (much more than "real" ROM) and puts (undocumented) colors on screen if problems are detected.

19 April 2009, 12:28	#6
Calgor (Amigas && Amigos)++ Join Date: Sep 2005 Location: Anrea Posts: 999	According to the Amiga Guru Book: turquoise (RGB = $0CC) - RAM failure in the Kickstart WCS (A1000 only). Apparently the concluding diagnostic is the A1000 boot jingle so I am guessing you didn't hear that.

19 April 2009, 12:45	#7
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,517	Does it have daughterboard? Could be problem with daughterboard and mainboard connections. (early A1000s have separate daughterboard for Kickstart RAM)

19 April 2009, 17:29	#9
r.cade Registered User Join Date: Aug 2006 Location: Augusta, Georgia, USA Posts: 550	If the WOM is bad, then I would suggest using one of the old hacks to wire in a real Kickstart ROM. It will save you time booting that disk every time you turn it on, also.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)