English Amiga Board


Go Back   English Amiga Board > Misc > MarketPlace

 
 
Thread Tools
Old 19 October 2012, 11:56   #21
Slayer
Amiga Member
Slayer's Avatar
 
Join Date: Aug 2003
Location: New Zealand
Age: 52
Posts: 695
I'm sure one of the tracks on one side showed as a 7 but it was some time ago but I won't say too much otherwise next you'll be asking me for a dump of it since it had different protection ;-)

I copied many games with XCopy and then cycloned only one 7 track normally or the occassional 2 if memory serves me right

I remember taking a very very long time to cyclone dragons lair (even though I know have 3 legitimate copies LOL) since practically every track on all 6 disks were long track. Cyclone would copy a 7 but the shift (or whatever you want to call it) was sometimes too great to be recognised as authentic and the game would fail to load that section. I'd go back and copy that one track and try and boot up, it was exciting at times to get just one click further before it hung again LOL
Slayer is offline  
Old 19 October 2012, 14:10   #22
mr.vince
Cheesy crust

mr.vince's Avatar
 
Join Date: Nov 2008
Location: Hawk's Creek
Age: 43
Posts: 1,374
I am pretty sure that Giana never used longtracks, as the protection is merely re-arranging data (and if I am right also using different syncs), but nothing spectacular. There even was a parameter for CV Parameter Copier, made by the same guys (Rene Feibicke and maybe Thomas Lopatic) that did the protection.

Dragon's Lair is another story as this one did use longtracks. Cycloning means force shifting the read signal to the destination. Due to bit shift on the inner tracks data needs to be pre-compensated by moving bit cells to make sure they appear where they are supposed to appear after reading them back. The Amiga can pre-comp data, but not when using Cyclone as the signal is shifted from the source to the destination. Now by not shifting, the bits do not appear in the correct framing when reading them back... and you get read errors. As bit shift does not matter on the outer tracks, bad copies usually boot fine but fail after track 50 or similar.

Click image for larger version

Name:	bitshift.png
Views:	175
Size:	10.9 KB
ID:	32923

In the graph, bit cell 1 comes early, whereas cell 2 is a little late.
mr.vince is offline  
Old 01 November 2012, 03:54   #23
thermalthong
Registered User
 
Join Date: Oct 2012
Location: Essex
Posts: 21
There is one of these going on ebay for £5000 (plus £8 p+p lol) is he a dreamer or is it worth that much now?
thermalthong is offline  
Old 08 November 2012, 00:23   #24
UrokoSakanabito
Registered User
 
Join Date: Aug 2012
Location: Germany
Posts: 12
http://www.ebay.de/itm/The-Great-Gia...item35c132272e

WTF?
UrokoSakanabito is offline  
Old 08 November 2012, 00:27   #25
s2325
Zone Friend

s2325's Avatar
 
Join Date: Jun 2006
Location: Gargore
Age: 39
Posts: 17,789
And it's untested. He should buy C64 if he want that funny price for his games.
s2325 is offline  
Old 08 November 2012, 00:32   #26
UrokoSakanabito
Registered User
 
Join Date: Aug 2012
Location: Germany
Posts: 12
It´s tested ! And the game was sold for this price ! O__o
UrokoSakanabito is offline  
Old 08 November 2012, 00:36   #27
Retro-Nerd
Missile Command Champion

Retro-Nerd's Avatar
 
Join Date: Aug 2005
Location: Germany
Age: 47
Posts: 11,818
Quote:
In working order when stored, but as I no longer have a C64 and disk drive, am selling as untested.
Not really tested recentlly. Anyway, silly prices meets rich collectors. Nothing new.

Edit: Ah, is see. Anyway...
Quote:
EDIT -Game loaded and tested 04/11/12( cheers macc).
Retro-Nerd is offline  
 


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hi there, can someone please have a look @ my Giana Sisters ? Thank you ! UrokoSakanabito Nostalgia & memories 12 15 August 2012 22:34
The Giana Sisters v1.0 and v1.1 mr.vince HOL data problems 0 07 January 2010 15:01
Giana Sisters jimbob005 Retrogaming General Discussion 65 28 May 2008 04:06
WTB: Giana Sisters C-64/Amiga martin-flash MarketPlace 1 22 February 2008 06:04
Giana Sisters? Parsec request.Old Rare Games 5 07 August 2003 05:58

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +2. The time now is 12:23.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Page generated in 0.07418 seconds with 16 queries