FAO Fiath. The impossible dumps

Craigt · 13 June 2004, 18:30

I have had another go at dumping some disks on my Amiga (I must like punishing myself or something

)

I picked a random game out of the attic, which turned out to be Toki, and dumped it 4 times using different configurations...

1. DF1:, Mode 0, caches off, Blizzard installed.
2. DF0:, Mode 0, caches off, Blizzard installed.
3. DF1:, Mode 1, caches on, Blizzard installed.
4. DF1:, Mode 0, caches off, Blizzard installed. Alternative SIMM.

I was going to attempt to dump it with my blizzard removed, but I realised that I would have to get PC2Amiga working since my memory expansion will have to go with it. Maybe I will get it sorted one day...

Anyway, after dumping the disks I transfered them to my PC and compared the dumps using Beyond Compare (a text/binary file comparason application). Supprisingly, they are all significantly different. Even dumps 1 and 4 which I thought should be identical show large differences and very different file sizes.

I am currently uploading them to the FTP in the CraigT folder. Its going to take another 20 minutes or so to upload them (damn 56k

). Do you think they will shine any light on my Amiga's problem?

Toni Wilen · 13 June 2004, 18:32

RAW dumps can't be ever identical. It is impossible to start read exactly at the same position.

Don't worry, they are most likely just fine

13 June 2004, 18:54

http://www.caps-project.org/articles.php?id=diffdumps

fiath · 13 June 2004, 21:25

Exactly x 2.

When I have some more time (hopefully tonight, but you never know) I'll take a look. And maybe even catch up with some of my mail (Burseg)

Craigt · 14 June 2004, 01:09

Mental note - Read the FAQ

Cheers for that, Fiath. I will keep my fingers crossed.

fiath · 17 June 2004, 01:31

Dump 2 worked fine!

So I guess maybe it is the drive which was the problem... Wierd.

Anyway, feel free to continue now, but remember to use that setup

Craigt · 17 June 2004, 23:11

Fantastic! Looks like i'm going to have to find some free time to work through the disks i've got

fiath · 19 June 2004, 13:32

Okay great

Well, I think it is worth uploading another disk under that config to check - just before you do a dumping blitz and we find something went wrong. I'm sure it'll be fine though.

Craigt · 20 June 2004, 17:41

I'm uploading a dump of Sensible Soccer at the moment.

I dumped it thinking that you didn't have a dump of V1.1. But after looking at the CAPS database again it looks like I missed it

IFW · 20 June 2004, 18:08

Never mind, it was good to confirm that you have a stable dumping setup now - go ahead, dump the other games

btw: the second disk is heavily modified, just in case you are interested.

IFW · 20 June 2004, 18:15

Just compared the first disk with the others we have and unfortunately your disk is a completely different version of Sensi, although it looks like the other v1.1 ones... too bad the second disk is modified.

jmmijo · 20 June 2004, 18:17

Quote:

Originally Posted by IFW

Just compared the first disk with the others we have and unfortunately your disk is a completely different version of Sensi, although it looks like the other v1.1 ones... too bad the second disk is modified.

So I take it the second disk is the data/play disk and of course it was write enabled

IFW · 20 June 2004, 20:07

Yes, afaik you can edit teams etc and sadly many people enjoyed those options...

Craigt · 20 June 2004, 22:03

Bit of a shame, really. I picked the game up a couple of weekends ago at a car boot sale for the bargain price of 50p

I noticed the disks were write enabled just before I dumped them today but couldn't tell if anything had been saved. Ah well... I will start to dump the rest of my stuff

[edit] Forgot to mention. This is the version of sensi that I have.

jmmijo · 20 June 2004, 22:17

Quote:

Originally Posted by IFW

Yes, afaik you can edit teams etc and sadly many people enjoyed those options...

Well you have to remember that most/many people wouldn't have thought about making archival backup copies for their own use, even when many backup/copy utilities were available at the time

Galahad/FLT · 27 December 2004, 18:43

The Sensible Soccer MFM disk format cannot be duplicated by normal means

13 June 2004, 18:30	#1
Craigt Registered User Join Date: May 2004 Location: Bristol Age: 46 Posts: 26	FAO Fiath. The impossible dumps I have had another go at dumping some disks on my Amiga (I must like punishing myself or something ) I picked a random game out of the attic, which turned out to be Toki, and dumped it 4 times using different configurations... 1. DF1:, Mode 0, caches off, Blizzard installed. 2. DF0:, Mode 0, caches off, Blizzard installed. 3. DF1:, Mode 1, caches on, Blizzard installed. 4. DF1:, Mode 0, caches off, Blizzard installed. Alternative SIMM. I was going to attempt to dump it with my blizzard removed, but I realised that I would have to get PC2Amiga working since my memory expansion will have to go with it. Maybe I will get it sorted one day... Anyway, after dumping the disks I transfered them to my PC and compared the dumps using Beyond Compare (a text/binary file comparason application). Supprisingly, they are all significantly different. Even dumps 1 and 4 which I thought should be identical show large differences and very different file sizes. I am currently uploading them to the FTP in the CraigT folder. Its going to take another 20 minutes or so to upload them (damn 56k ). Do you think they will shine any light on my Amiga's problem?

20 June 2004, 22:03	#14
Craigt Registered User Join Date: May 2004 Location: Bristol Age: 46 Posts: 26	Bit of a shame, really. I picked the game up a couple of weekends ago at a car boot sale for the bargain price of 50p I noticed the disks were write enabled just before I dumped them today but couldn't tell if anything had been saved. Ah well... I will start to dump the rest of my stuff [edit] Forgot to mention. This is the version of sensi that I have. Last edited by Craigt; 20 June 2004 at 22:18.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fiath's Copy Protected Coverdisk List	fiath	request.Old Rare Games	90	07 April 2016 17:22
FAO: Prometheus users	alexh	support.Hardware	2	17 July 2008 11:55
@ Fiath	BippyM	project.SPS (was CAPS)	1	17 July 2006 10:03

13 June 2004, 18:32	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	RAW dumps can't be ever identical. It is impossible to start read exactly at the same position. Don't worry, they are most likely just fine

13 June 2004, 18:54	#3
oldpx Posts: n/a	http://www.caps-project.org/articles.php?id=diffdumps

13 June 2004, 21:25	#4
fiath Moderator Join Date: Jan 2002 Location: South East / UK Age: 46 Posts: 1,930	Exactly x 2. When I have some more time (hopefully tonight, but you never know) I'll take a look. And maybe even catch up with some of my mail (Burseg)

14 June 2004, 01:09	#5
Craigt Registered User Join Date: May 2004 Location: Bristol Age: 46 Posts: 26	Mental note - Read the FAQ Cheers for that, Fiath. I will keep my fingers crossed.

17 June 2004, 01:31	#6
fiath Moderator Join Date: Jan 2002 Location: South East / UK Age: 46 Posts: 1,930	Dump 2 worked fine! So I guess maybe it is the drive which was the problem... Wierd. Anyway, feel free to continue now, but remember to use that setup

17 June 2004, 23:11	#7
Craigt Registered User Join Date: May 2004 Location: Bristol Age: 46 Posts: 26	Fantastic! Looks like i'm going to have to find some free time to work through the disks i've got

19 June 2004, 13:32	#8
fiath Moderator Join Date: Jan 2002 Location: South East / UK Age: 46 Posts: 1,930	Okay great Well, I think it is worth uploading another disk under that config to check - just before you do a dumping blitz and we find something went wrong. I'm sure it'll be fine though.

20 June 2004, 17:41	#9
Craigt Registered User Join Date: May 2004 Location: Bristol Age: 46 Posts: 26	I'm uploading a dump of Sensible Soccer at the moment. I dumped it thinking that you didn't have a dump of V1.1. But after looking at the CAPS database again it looks like I missed it

20 June 2004, 18:08	#10
IFW Moderator Join Date: Jan 2003 Location: ... Age: 52 Posts: 1,838	Never mind, it was good to confirm that you have a stable dumping setup now - go ahead, dump the other games btw: the second disk is heavily modified, just in case you are interested.

20 June 2004, 18:15	#11
IFW Moderator Join Date: Jan 2003 Location: ... Age: 52 Posts: 1,838	Just compared the first disk with the others we have and unfortunately your disk is a completely different version of Sensi, although it looks like the other v1.1 ones... too bad the second disk is modified.

20 June 2004, 20:07	#13
IFW Moderator Join Date: Jan 2003 Location: ... Age: 52 Posts: 1,838	Yes, afaik you can edit teams etc and sadly many people enjoyed those options...

27 December 2004, 18:43	#16
Galahad/FLT Going nowhere Join Date: Oct 2001 Location: United Kingdom Age: 50 Posts: 8,986	The Sensible Soccer MFM disk format cannot be duplicated by normal means

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)