Amiga questions you've always been too embarrassed to ask - Page 89

Jope · 05 March 2018, 20:01

An ADF is a sector dump, it only contains the "payload" data on the disk in a sequential manner.

An extended ADF is an MFM stream dump, it contains also the track and sector headers present around the data on the physical disk. Also if the track format is not an Amiga DOS format, a raw MFM stream can still convey the same information. For example MS-DOS floppies can be dumped into eADF. Some copy protections are weak enough to be represented as an eADF, other custom formats require more analysis and a more versatile format, hence the CAPS/SPS IPF format.

Jope · 05 March 2018, 20:06

Quote:

Originally Posted by Gorf

I think a second cpu would make things far more complicated and unnecessary expensive. Sure the CPU has to wait on the Zorro-bus until Agnus is ready - but I do not see a big difference to usual ChipRAM behavior here. And there are plenty other Zorro-cards behaving the same way.
Being freed of audio, floppy and so on, the DMA stress-level would be lower on such a card anyways.

.. but wait states are a sign of weakness! ;-)

Gorf · 05 March 2018, 20:26

Quote:

Originally Posted by Jope

.. but wait states are a sign of weakness! ;-)

wouldn't change much, if we put an other cpu on the board: Agnus would still block.
If you want no wait states you need FastRAM - thats what it is for.

idrougge · 05 March 2018, 22:09

Quote:

Originally Posted by Gorf

than we were talking about the same thing here. Agnus and Denise get its own RAM on a board, where blitting and so on is done. CPU on the mainboard writes to gfx-ram and registers via Zorro.

Advantage of such a card: it is far more compatible to graphics.library and Intuition - software needs only address-transtation options.

If such a card would have been available even as late as 1991 with poor old ECS, I would have bought one for my A3000 immediately!
To be honest: today I would buy such a card ...

What would such a card offer? If it is to do anything useful at all you're looking at totally rewriting graphics.library anyway. Why not get an ET4000W32 chip or even a Texas GPU in that case?

Amiga1992 · 05 March 2018, 22:16

Don't turn the "Amiga questions you've always been too embarrassed to ask" into another Amiga Fan Fiction thread, please.

Gorf · 06 March 2018, 09:50

Quote:

Originally Posted by idrougge

What would such a card offer? If it is to do anything useful at all you're looking at totally rewriting graphics.library anyway. Why not get an ET4000W32 chip or even a Texas GPU in that case?

Advantages: http://eab.abime.net/showpost.php?p=...postcount=1752

I hoped it would be much closer to the original concept and no “total rewrite" necessary.

Why no other chip? Because C= already produced the custum chips. They could have offered such a card for a very good price. That’s why I asked, why they never did...

-Acid- · 06 March 2018, 10:56

When using a buffered interface on an A1200 to use 4 ide devices in the system... is there any alternative to the IDEfix software to make it all work?

Daedalus · 06 March 2018, 12:15

Elbox's EIDE'99 works on at least some types of 4xIDE interface. I have one that shipped with that software, but actually preferred IDEFix so went with that instead. If you don't need the scsi patches (e.g. large hard drive support), you can just use atapi.device to access the second channel (the first channel using the original scsi.device) without having to run the IDEFix software itself.

-Acid- · 06 March 2018, 19:06

As a follow up I know IDEfix also fixes the large partition problems as well.... is there any need to run a fixed scsi.device if you are already running IDEfix?

daxb · 06 March 2018, 19:58

IDEfix use/patch it's own scsi.device. So no need for a new scsi.device because it won't be used.

Viceroy · 06 March 2018, 19:59

Quote:

Originally Posted by DamienD

...this post is probably better suited in this thread.

Could have just moved but then it would get lost in the pages and not the most recent question:

Sorted, thanks DamionD ;-)

Daedalus · 06 March 2018, 21:42

Indeed, IDEFix patches the standard version of scsi.device with its own fixes and reports a way out there version number (109.something IIRC) so you can tell it's installed and working.

-Acid- · 06 March 2018, 23:26

thanks for confirming things for me

klokwirk · 16 March 2018, 10:35

Well here goes... this one has been pissing me off for years but I've just been toooo stubborn to ask.
I have several Amigas wb 3.1 and 3.9 which simnly refuse to snapshot the position of screens and icons I set. They just come back up as a jumbled mess.... WTF WTF and WTF x 2!!
Someone PLEASE enlighten me. What TF is going on?
ps WTF stands for 'Whats That Fish' of course!

demolition · 16 March 2018, 10:39

Quote:

Originally Posted by klokwirk

I have several Amigas wb 3.1 and 3.9 which simnly refuse to snapshot the position of screens and icons I set. They just come back up as a jumbled mess.... WTF WTF and WTF x 2!!

It can only snapshot files and folders which have a .info since that file is where the information is saved. The snapshot function does not create these .files if they do not exist.
You can use IconEdit to make new .info files or just duplicate an existing suitable .info file.

Daedalus · 16 March 2018, 11:33

Also, if the files have icons but the icon files don't have the write bit set, you can't snapshot them.

In OS 3.9, you can also give an icon to a file by opening its information window and dragging any icon (even its own default icon) into the icon panel in the Information window and clicking Save. It will create a new .info file with the copied image in it.

Amiga1992 · 16 March 2018, 15:01

Quote:

Originally Posted by Daedalus

Also, if the files have icons but the icon files don't have the write bit set, you can't snapshot them.

You would think that after decades of existing, someone would have updated the OS to show an error message when you try to snapshot an icon that has no .info or has a write protected one

Ah, Amiga :/

Gorf · 16 March 2018, 19:42

Quote:

Originally Posted by Akira

You would think that after decades of existing, someone would have updated the OS to show an error message when you try to snapshot an icon that has no .info or has a write protected one

Ah, Amiga :/

Or better just create one without image (yes I know there are no image-less .info, but there should be...)

klokwirk · 17 March 2018, 13:52

thanks but how do I set the write bit for every icon? Is there a simple CLI command?

daxb · 17 March 2018, 15:59

The command is called "Protect".

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05 March 2018, 20:01	#1761
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,863	An ADF is a sector dump, it only contains the "payload" data on the disk in a sequential manner. An extended ADF is an MFM stream dump, it contains also the track and sector headers present around the data on the physical disk. Also if the track format is not an Amiga DOS format, a raw MFM stream can still convey the same information. For example MS-DOS floppies can be dumped into eADF. Some copy protections are weak enough to be represented as an eADF, other custom formats require more analysis and a more versatile format, hence the CAPS/SPS IPF format.

05 March 2018, 22:16	#1765
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Don't turn the "Amiga questions you've always been too embarrassed to ask" into another Amiga Fan Fiction thread, please.

06 March 2018, 10:56	#1767
-Acid- Registered User Join Date: Oct 2012 Location: South Shields Posts: 812	When using a buffered interface on an A1200 to use 4 ide devices in the system... is there any alternative to the IDEfix software to make it all work?

06 March 2018, 12:15	#1768
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,346	Elbox's EIDE'99 works on at least some types of 4xIDE interface. I have one that shipped with that software, but actually preferred IDEFix so went with that instead. If you don't need the scsi patches (e.g. large hard drive support), you can just use atapi.device to access the second channel (the first channel using the original scsi.device) without having to run the IDEFix software itself.

06 March 2018, 19:06	#1769
-Acid- Registered User Join Date: Oct 2012 Location: South Shields Posts: 812	As a follow up I know IDEfix also fixes the large partition problems as well.... is there any need to run a fixed scsi.device if you are already running IDEfix?

06 March 2018, 19:58	#1770
daxb Registered User Join Date: Oct 2009 Location: Germany Posts: 3,304	IDEfix use/patch it's own scsi.device. So no need for a new scsi.device because it won't be used.

06 March 2018, 21:42	#1772
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,346	Indeed, IDEFix patches the standard version of scsi.device with its own fixes and reports a way out there version number (109.something IIRC) so you can tell it's installed and working.

06 March 2018, 23:26	#1773
-Acid- Registered User Join Date: Oct 2012 Location: South Shields Posts: 812	thanks for confirming things for me

16 March 2018, 10:35	#1774
klokwirk klokwirk Join Date: Dec 2013 Location: Perth Australia Posts: 89	Well here goes... this one has been pissing me off for years but I've just been toooo stubborn to ask. I have several Amigas wb 3.1 and 3.9 which simnly refuse to snapshot the position of screens and icons I set. They just come back up as a jumbled mess.... WTF WTF and WTF x 2!! Someone PLEASE enlighten me. What TF is going on? ps WTF stands for 'Whats That Fish' of course!

16 March 2018, 11:33	#1776
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,346	Also, if the files have icons but the icon files don't have the write bit set, you can't snapshot them. In OS 3.9, you can also give an icon to a file by opening its information window and dragging any icon (even its own default icon) into the icon panel in the Information window and clicking Save. It will create a new .info file with the copied image in it.

17 March 2018, 13:52	#1779
klokwirk klokwirk Join Date: Dec 2013 Location: Perth Australia Posts: 89	thanks but how do I set the write bit for every icon? Is there a simple CLI command?

17 March 2018, 15:59	#1780
daxb Registered User Join Date: Oct 2009 Location: Germany Posts: 3,304	The command is called "Protect".

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