Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Robert17 on September 11, 2004, 11:15:54 AM

Title: Blizzard Memory Problems
Post by: Robert17 on September 11, 2004, 11:15:54 AM

Hi all just got a 64mb single sided simm for my Blizzard from amigakit... the problem is you have to set the jumper to 60ns access otherwise you get a black screen on startup, even with no startup-sequence, but when you put the 60ns jumper on, it boots but only works for a couple of minutes, then crashes.

Any ideas?

Thanks

Robert

Title: Re: Blizzard Memory Problems
Post by: amigakit on September 11, 2004, 11:22:02 AM

What Blizzard model do you have? Have you tried re-seating the SIMM ensuring that all the contacts are making good connection?

Describe what happends when it crashes.

Title: Re: Blizzard Memory Problems
Post by: Robert17 on September 11, 2004, 11:26:34 AM

I have a Blizzard 1230IV without scsi kit, I think maybe it's a hard drive problem, if you leave it sitting there doing nothing it won't crash, but when you access a drive, it brings up half the icons then you get the busy clock icon and that's it. I'm thinking maybe a clean install of workbench? Version 3.0 by the way.

Robert

Title: Re: Blizzard Memory Problems
Post by: Jiffy on September 11, 2004, 11:30:13 AM

Maybe PSU problems? The A1200's PSU doesn't give you much power (23 watts). Do you use a 2.5" or a 3.5" drive? The 1200 is designed for a 2.5" drive and can have troubles giving a 3.5" drive enough 'juice'.

Title: Re: Blizzard Memory Problems
Post by: Robert17 on September 11, 2004, 11:32:30 AM

I have an internal 2.5 laptop hdd, I'm using a 135w AT psu.

My 1200 is kinda quirky though, usually a format solves any problems, a while back I couldn't get any floppies to format on any drive (1 internal and 2 external) Done a clean install and it all worked  :-?

Robert

Title: Re: Blizzard Memory Problems
Post by: amigakit on September 11, 2004, 11:32:33 AM

Boot from a standard Workbench Disk and just observe the computer for a while.  Avoid using the hard disk, but instead copy the Workbench floppy disk to the RAM Disk and try and fill it.  Tell me if the Amiga crashes, if it doesn't then consider if it is possible that the hard disk cable became dislodged when you installed the memory.  Check the IDE cable at the source (IDE interface) and at the hard disk.  

Title: Re: Blizzard Memory Problems
Post by: amigakit on September 11, 2004, 11:38:31 AM

In my opinion the best way to check memory is to completely fill the RAM disk and then empty it by deleting the contents.  

If the memory is defective, it will crash when the RAM disk is filled/purged.

BTW: Dont fill the RAM disk with Hard Drive contents as we that will not definitevely identify any problems!  I would suggest opening the RAM disk, then copying the contents of the Workbench disk into it, highlight them and press Amiga-C lots of times until the 64MB is filled.  Then reverse the process by deleting the contents.

Your Samsung memory was checked this way on a BlizzardPPC before despatch.

Title: Re: Blizzard Memory Problems
Post by: Robert17 on September 11, 2004, 01:42:53 PM

Okay well my old Memory works the same as it used to... 8mb 70ns.... the new 64mb simm boots to black screen at 70ns and runs unstable at 60ns... I get softare errors mostly, also had a yellow recoverable error before.

edit: Do I need a patch to get OS3.0 to take this much ram?

Robert

Title: Re: Blizzard Memory Problems
Post by: Robert17 on September 11, 2004, 02:34:52 PM

 :bump:  :python:

Title: Re: Blizzard Memory Problems
Post by: SamuraiCrow on September 11, 2004, 03:55:52 PM

The amount of RAM shouldn't be a problem.  I know of no reason 64MB would give you problems.