CD32 problem after using CD200 (or something like that) compilation..

MrDBUG · 17 September 2010, 04:55

I have the oddest problem.....

I was testing a CD200 games compilation cd, and because the CD apparently loaded really slow .. (bad CD or lens going south i fear),
I broke off loading the game I had chosen after it had started loading and done all, or some of, the "RAD" device stuff it likely does to run on the CD32,

(I dont know quite how they make those compilations), but now I just CANT seem to reset the machine !
I always get complaints about some bad blocks and missing device ..

First it was bad blocks on RAM_0 device .. Then I tried booting with a Workbench 3.0 CD (adapted to CD32) , successfully even but then I reset again and turned off power, thinking I had gotten rid of RAM_0 now it complains about CD System 3.0 not found or bad blocks etc etc,

I even try to turn the box off and on again and turn off power and reset and all ... No go , the beautiful CD32 startup animation is gone forever it seems ......

I know the RAD device survives resets but I thought it would go away if I turned off power ..... !!

HELP !! Is this a RAD virus or something ??

I was in the early startup menu and the only bootdevice was RAD, I even tried to disable it there and click "USE". But to no avail...

Double HELP!!

alexh · 17 September 2010, 08:47

RAD is reset recoverable RAM disk. It DOES go away if you turn off the power.

Use a different disc, an official CD32 game disc, switch off the power... back on again, run the disc... you will see reset will work normally once again.

Bamiga2002 · 17 September 2010, 08:52

FOL · 17 September 2010, 10:46

Quote:

Originally Posted by alexh

RAD is reset recoverable RAM disk. It DOES go away if you turn off the power.

Use a different disc, an official CD32 game disc, switch off the power... back on again, run the disc... you will see reset will work normally once again.

Alex is right, I had this alot when making my own comp disc. Sometimes the only way to get rid of it was to leave it off for over 1 min. I could also get rid of it by running Captive 2 - Liberation.

pandy71 · 17 September 2010, 11:30

And IMO RAD itself is unique and exist only on Amiga - which is really nice!

Retro1234 · 17 September 2010, 14:38

The RAD: on that compilation I think is below CD0: priotity.
Hold down reset for longer then normal or just switch of for 30-60secs
If you load the workbench disk type remrad
People hve have complained that the compilations are slow on the 200 compilation every game uses rad because a large chunck of ram is filed up with AGS stuff

alexh · 17 September 2010, 17:14

Quote:

Originally Posted by pandy71

And IMO RAD itself is unique and exist only on Amiga - which is really nice!

Nope it existed on Atari ST too. eDisk

http://www.umich.edu/~archive/atari/0index

But Amiga was first.

http://www.amiga.org/forums/showthread.php?t=51892

pandy71 · 17 September 2010, 17:34

Never owned ST...

MrDBUG · 25 September 2010, 08:31

Hey !! Next day my beloved CD32 was ok again :-D Dont know how long it took before the RAD left the memory :-)

alexh · 25 September 2010, 09:08

A second at most.

Good it's working again.

MrDBUG · 25 September 2010, 09:39

No, must have taken longer, because I DID even switch the machine off on the night I fiddled with this .. :-D Actually the machine complained about read errors on the RAD stuff after I had turned it off a couple of times .. Probably because turning off power corrupted the RAD contents to the point of ALMOST being gone .. :-) Well Im going to use "remrad" next time when I get my CD32 Lyra2 adapter and get a keyboard connected !

zipper · 25 September 2010, 11:08

For me getting rid of resident things in memory takes about 10 secs.

FOL · 25 September 2010, 11:10

Quote:

Originally Posted by zipper

For me getting rid of resident things in memory takes about 10 secs.

Thats not always true, certain RAD:'s I was using, would'nt go unless it was off for atleast 1 to 2 mins.

MrDBUG · 25 September 2010, 11:54

Btw did anyone notice my question of the Analogic Computers disk drives ? On eBay ? They appear to have a 99.9% reputation too ! 50 quid for drive plus postage :-S Wonder if its worth it .. really want a IO solution for my CD32 ..

alexh · 25 September 2010, 15:50

I'm pretty sure you're all dreaming. It's just standard DRAM they don't hold their contents that long when the power and clocks are gone.

Only thing wrong with those disk drives are they don't have any RAM but they use RAM which means some CD32 discs don't work after it is plugged in.

FOL · 25 September 2010, 19:39

Quote:

Originally Posted by alexh

I'm pretty sure you're all dreaming. It's just standard DRAM they don't hold their contents that long when the power and clocks are gone.

Yes we must have all been dreaming.

alexh · 25 September 2010, 20:25

Perhaps there is something else like the CD32 switch (does it have a switch?) doesn't kill the power to the RAM chips and it has to be off at the mains or something?

Perhaps the CD32 board has a big capacitor in the power circuit / PSU which continues to supply DC voltage & current after the power is switched off?

1-2 minutes though... seems too long for anything like that. DRAM is supposed to be able to retain it's values slightly longer if it is very cold, switch your heating up

FOL · 25 September 2010, 20:34

Quote:

Originally Posted by alexh

Perhaps there is something else like the CD32 switch (does it have a switch?) doesn't kill the power to the RAM chips and it has to be off at the mains or something?

Perhaps the CD32 board has a big capacitor in the power circuit / PSU which continues to supply DC voltage & current after the power is switched off?

1-2 minutes though... seems too long for anything like that. DRAM is supposed to be able to retain it's values slightly longer if it is very cold, switch your heating up

I agree, Im just stating what I have experienced personally and others seem to be to.

I know its very unlikey, but what I have had happen. Bugged me for ages, the first time it happened, I got fedup and left it for 5 mins and it still did'nt clear (and no Im not stupid, the power switch works fine). The only way I got rid of it was putting Liberation in and that killed the RAD:.
Also to be 100% sure I even removed the plug.

alexh · 25 September 2010, 20:37

Google for DRAM, Volatile & Retention and you'll see that I'm not making it up. DRAM just doesn't hold it's data that long with the power removed without some other mechanism.

A capacitor inside the PSU would explain a few seconds... but still. I wonder what it could be?

FOL · 25 September 2010, 20:44

Quote:

Originally Posted by alexh

Google for DRAM, Volatile & Retention and you'll see that I'm not making it up. DRAM just doesn't hold it's data that long with the power removed without some other mechanism.

I wonder what it could be?

Im sure it happened on my first CD32 (now dead).
My second CD32, I jammed well overated caps in to replace the original vented ones.

That would explain it I suppose, but if others have had problems getting rid of RAD:, I cant see how my experience is the same.
In the sense they changed their caps with massive overated ones.

17 September 2010, 04:55	#1
MrDBUG Registered User Join Date: Apr 2010 Location: Larvik, Norway Posts: 125	CD32 problem after using CD200 (or something like that) compilation.. I have the oddest problem..... I was testing a CD200 games compilation cd, and because the CD apparently loaded really slow .. (bad CD or lens going south i fear), I broke off loading the game I had chosen after it had started loading and done all, or some of, the "RAD" device stuff it likely does to run on the CD32, (I dont know quite how they make those compilations), but now I just CANT seem to reset the machine ! I always get complaints about some bad blocks and missing device .. First it was bad blocks on RAM_0 device .. Then I tried booting with a Workbench 3.0 CD (adapted to CD32) , successfully even but then I reset again and turned off power, thinking I had gotten rid of RAM_0 now it complains about CD System 3.0 not found or bad blocks etc etc, I even try to turn the box off and on again and turn off power and reset and all ... No go , the beautiful CD32 startup animation is gone forever it seems ...... I know the RAD device survives resets but I thought it would go away if I turned off power ..... !! HELP !! Is this a RAD virus or something ?? I was in the early startup menu and the only bootdevice was RAD, I even tried to disable it there and click "USE". But to no avail... Double HELP!!

25 September 2010, 20:25	#17
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,479	Perhaps there is something else like the CD32 switch (does it have a switch?) doesn't kill the power to the RAM chips and it has to be off at the mains or something? Perhaps the CD32 board has a big capacitor in the power circuit / PSU which continues to supply DC voltage & current after the power is switched off? 1-2 minutes though... seems too long for anything like that. DRAM is supposed to be able to retain it's values slightly longer if it is very cold, switch your heating up Last edited by alexh; 25 September 2010 at 20:36.

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17 September 2010, 08:47	#2
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,479	RAD is reset recoverable RAM disk. It DOES go away if you turn off the power. Use a different disc, an official CD32 game disc, switch off the power... back on again, run the disc... you will see reset will work normally once again.

17 September 2010, 08:52	#3
Bamiga2002 BlizzardPPC'less Join Date: May 2004 Location: Finland Age: 46 Posts: 3,210

17 September 2010, 11:30	#5
pandy71 Registered User Join Date: Jun 2010 Location: PL? Posts: 2,891	And IMO RAD itself is unique and exist only on Amiga - which is really nice!

17 September 2010, 14:38	#6
Retro1234 Phone Homer Join Date: Jun 2006 Location: 5150 Posts: 5,828	The RAD: on that compilation I think is below CD0: priotity. Hold down reset for longer then normal or just switch of for 30-60secs If you load the workbench disk type remrad People hve have complained that the compilations are slow on the 200 compilation every game uses rad because a large chunck of ram is filed up with AGS stuff

17 September 2010, 17:34	#8
pandy71 Registered User Join Date: Jun 2010 Location: PL? Posts: 2,891	Never owned ST...

25 September 2010, 08:31	#9
MrDBUG Registered User Join Date: Apr 2010 Location: Larvik, Norway Posts: 125	Hey !! Next day my beloved CD32 was ok again :-D Dont know how long it took before the RAD left the memory :-)

25 September 2010, 09:08	#10
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,479	A second at most. Good it's working again.

25 September 2010, 09:39	#11
MrDBUG Registered User Join Date: Apr 2010 Location: Larvik, Norway Posts: 125	No, must have taken longer, because I DID even switch the machine off on the night I fiddled with this .. :-D Actually the machine complained about read errors on the RAD stuff after I had turned it off a couple of times .. Probably because turning off power corrupted the RAD contents to the point of ALMOST being gone .. :-) Well Im going to use "remrad" next time when I get my CD32 Lyra2 adapter and get a keyboard connected !

25 September 2010, 11:08	#12
zipper Registered User Join Date: Mar 2004 Location: finland Posts: 1,844	For me getting rid of resident things in memory takes about 10 secs.

25 September 2010, 11:54	#14
MrDBUG Registered User Join Date: Apr 2010 Location: Larvik, Norway Posts: 125	Btw did anyone notice my question of the Analogic Computers disk drives ? On eBay ? They appear to have a 99.9% reputation too ! 50 quid for drive plus postage :-S Wonder if its worth it .. really want a IO solution for my CD32 ..

25 September 2010, 15:50	#15
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,479	I'm pretty sure you're all dreaming. It's just standard DRAM they don't hold their contents that long when the power and clocks are gone. Only thing wrong with those disk drives are they don't have any RAM but they use RAM which means some CD32 discs don't work after it is plugged in.

25 September 2010, 20:37	#19
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,479	Google for DRAM, Volatile & Retention and you'll see that I'm not making it up. DRAM just doesn't hold it's data that long with the power removed without some other mechanism. A capacitor inside the PSU would explain a few seconds... but still. I wonder what it could be?

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