Dead 2000

[curtis]

Don't have an o'scope.

Could it be that the crystal driving the processor is not connected properly or defective?
 
 Long shot, but if you have a scope to check the crystal outputs / tick signal, and it isn't giving Mr CPU any timing signals, that might explain why the Amiga thinks it doesn't have a processor?

[JuMa]

Well, well. Looks like my A2000 died as well. First random freezes then just black screen. It has vampire intsalled. I removed vampire and installed 68k and rom. Now at power up it goes normally to insert floppy screen but when starting to load a game it freezes. If reset after that it (sometimes) goes to green or red screen and resets itself.

[curtis]

Welcome to my horrible, terrible, very bad day!

Well, well. Looks like my A2000 died as well. First random freezes then just black screen. It has vampire intsalled. I removed vampire and installed 68k and rom. Now at power up it goes normally to insert floppy screen but when starting to load a game it freezes. If reset after that it (sometimes) goes to green or red screen and resets itself.

[Oldsmobile_Mike]

Welcome to my horrible, terrible, very bad day!

Don't jinx us other A2000 owners!

[curtis]

Trying not to!

BTW, just swapped out both CIA chips.

No change.

Sure hope those RAM chips get in soon...

Don't jinx us other A2000 owners!

[madgrizzle]

That's the way I test.  Always.

Ok, you indicated that you didn't see the Indivision splash screen so that led me to believe it was still there.  At least we can say why you don't see it... because it's not installed :roflmao:

[curtis]

:destroy:  :python:  :flame:

Ok, you indicated that you didn't see the Indivision splash screen so that led me to believe it was still there.  At least we can say why you don't see it... because it's not installed :roflmao:

[guest11527]

Cool. Is this available from 3.0 or 3.1?

The ROM debugger is available since ever, but it became much less useful with 3.0. Before that, the ROMWack had a more or less textual interface, but SAD (introduced in 3.0) only accepts binary. I have not yet seen an external program that can talk to SAD to make it a reasonable debug tool.

[magnetic]

Curtis
 2 questions

1. Is the PowerLed Dim or Bright?

2. Hook up a keyboard and press cap locks 10+ times does the caps lock light still light?

[JuMa]

Curtis
 2 questions

1. Is the PowerLed Dim or Bright?

2. Hook up a keyboard and press cap locks 10+ times does the caps lock light still light?

Since I have the same problem... In my case power led is bright. Caps lock lights about six times then it stops. Does it mean something?

[Acill]

It

Since I have the same problem... In my case power led is bright. Caps lock lights about six times then it stops. Does it mean something?

Yes it means the CPU isn't started up completely. Look close at power LED the second you press power on. If the ROM are active the first instructions they give is to brighten the power LED. It should go to to bright a sex nd after power is on.

Check your CPU socket for green or if you have been using a vampire in it you may have bent them out to much. I've had to replace several 68k sockets for vampire owners lately.

[QuikSanz]

Reason #69 that the Vampire folks need to have plenty of expansion slot adapters around!

[Acill]

Reason #69 that the Vampire folks need to have plenty of expansion slot adapters around!

I'm building several when the boards get here to sell actually.they will be under $40 shipped too.

[curtis]

Okay,the RAM chips came in.

Placed them very carefully and snugly over the originals and fired it up.  Nothing changed.  Also, none of the chips seem any warmer or cooler.  All about the same temp.

Tried 4 different cpu's, all known good, and got the same result.

Tried the Caps Lock mentioned above and got to 6 or 7 and it stopped responding.

Summary:

1.  Computer has ONLY a Indivision ECS installed as I no longer have a monitor that can display Amiga natively.
2.  On power up I get 10 short blinks and 1 long blink on the Power LED.  Nothing else.  No other sign of life.
3.  So far I have replaced BOTH CIA chips, the cpu, Agnus, and doubled checked all jumpers including swapping the TICK to the display instead of the power supply.

NOTHING IS WORKING.

I do NOT have an o'scope so I can NOT check signals.

Suggestions?

Thanks,

Curtis

[madgrizzle]

Take out the indivision and connect the composite b&w to a TV.

[magnetic]

Okay,the RAM chips came in.

Placed them very carefully and snugly over the originals and fired it up.  Nothing changed.  Also, none of the chips seem any warmer or cooler.  All about the same temp.

Tried 4 different cpu's, all known good, and got the same result.

Tried the Caps Lock mentioned above and got to 6 or 7 and it stopped responding.



Curtis

Curtis if caps lock doesnt make it to 10 times its CPU problem. Probably the socket. Clean the socket with iso and a toobrush see what happens. Does the power LED stay dim or get bright?