anyone know why i have this error code?

[Justin]

Hi,

my re-capped miggy is being very strange.....

it worked for a while but now i just get the following message

Not enough memory. press left mouse to continue.

error: 3001 8002 Task: 0002778

this is a flashing yellow guru and it appears immediately on startup (i'm guessing my chip ram is toast)

 

[Firthy2002]

Aye that's probably bad chip RAM.

 

[Justin]

thanks firthy

 

[ShambleS1980]

i sometimes get that with a bad floppy

 

[Justin]

i get this with a bare board, no floppy or anything else attached

 

[fitzsteve]

Hey mate, I sent a couple of boards to mjnurney to repair, if they can't both be fixed you're welcome to the Ram off one of them. It's SMD isn't it? I have a Hot Air station here so might be able to swap the Rams over.

Will let you know what MJ says about my two boards

Stevo...

 

[Paul_s]

which Amiga?

 

[davideo]

which Amiga?

1200

Dave G

 

[BLTCON0]

@Justin
Maybe some address lines are stuck open (in the A1 to A20 range, as that's where the 2 MB chip RAM gets addressed. Probably up to A18 too, as I guess exec should be happy even with 512 KB).
I think it's not impossible but rather unlikely the culprit to be a bad chip as all 4 chips in the A1200 are x8 and thus all are used to form a single bank - so if any one was broken, the error would be unpredictable, unreliable behaviour or maybe no bootup at all and not a very specific low RAM error right upon bootup.

 

[Justin]

hmmmm, intriguing, so what would cause the gates to stay open?

 

[BLTCON0]

Some broken solder I guess, or plain old hardware defect. Let's go with broken solder for optimism's sake.
So verify continuity between CPU's and Alice's A1-A20 pin pairs and then between Alice's and each RAM chip's DRA0-DRA9 pin pairs. Beyond that it's logic probe equipment territory me thinks (during RAM detection time, each address line should have to be raised high at some point).

 

[Justin]

Some broken solder I guess, or plain old hardware defect. Let's go with broken solder for optimism's sake.
So verify continuity between CPU's and Alice's A1-A20 pin pairs and then between Alice's and each RAM chip's DRA0-DRA9 pin pairs. Beyond that it's logic probe equipment territory me thinks (during RAM detection time, each address line should have to be raised high at some point).

coolio, that'll keep me busy