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Bamu®
Account closed
Registered: May 2005
Posts: 1332 |
'DRM' with SID music...
Hi!
I can remember some game-composers, that protected their music's from being ripped...
Which one was the best protected game music?
And, are there any tools that allow to 'protect' any $1000/$1003 tune? :)
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tlr
Registered: Sep 2003
Posts: 1762 |
Is the Master of the Lamps rip in HVSC 100%?
I tried to rip it back in the 80's but gave up. I know Omega Supreme released a rip.
What I could remember from the original code was that it used multiple interrupts (timer and raster) + code outside interrupt. IIRC there was a routine outside interrupt reading SID registers (not the readable ones), and then setting some other SID registers from that.
I think Russell Lieblich did both the game code and music, so it was probably quite natural for him to blend up the code bits with the game code. :)
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Steppe
Registered: Jan 2002
Posts: 1510 |
The current MOTL rip in HVSC is 100% now (it was only added about a year ago, the version before that missed the gongs and played tunes incorrectly, IIRC). Inge spent quite a lot of time to finally get it right at last. |
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Laxity
Registered: Aug 2005
Posts: 459 |
JCH's deluxe driver can relocate tunes (done in the JCH editor, that is) into 5 pieces. Never tried it, but I'm not sure how hard the result is to rip actually. I think the code remains in one piece so tracing pointers wouldd make ripping easy.
How the hell is that music player in the disk ram stuff done?.. That's pretty neat IMO. ;) |
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Laxity
Registered: Aug 2005
Posts: 459 |
There was a tune I once tried to rip (in the late 80'ies) that was located around $0400, which I found particularly hard to rip because that area of memory was trashed when I started the monitor in my (ok, don't laugh) Power Catridge. Ripped arkanoid though.. That was fun... |
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tlr
Registered: Sep 2003
Posts: 1762 |
It shouldn't be that hard to rip, but you never know.
My guess is that the purpose of the splitter was mostly to fit large songs into tight game memory layouts. |
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tlr
Registered: Sep 2003
Posts: 1762 |
Quote: There was a tune I once tried to rip (in the late 80'ies) that was located around $0400, which I found particularly hard to rip because that area of memory was trashed when I started the monitor in my (ok, don't laugh) Power Catridge. Ripped arkanoid though.. That was fun...
Knuckle Buster starts at around $0400. It was easy to rip when you had this: CCS Mon. When holding Ctrl + Reset (maybe it was some other key) it copies $0000-$0800 -> $d000 under I/O.
The monitor is just a simple 8Kb EPROM at $8000 used together with an on/off switch and a reset button.
Crude but effective! |
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SIDWAVE
Account closed
Registered: Apr 2002
Posts: 2238 |
TMC/Scoop made a demo "Give a Try", Give a Try
where the music is protected on purpose, and there's a compo to rip it.
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T.M.R
Account closed
Registered: Dec 2001
Posts: 749 |
There were two more Give A Try style demos, all three are included with third, Crest's Give And Take - Give & Take |
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