https://github.com/Uko-TAL/TCB-Star-War ... ngineering
Enjoy !
Reverse engineering of TCB Star Wars Scroller
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uko
- Obsessive compulsive Atari behavior
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Reverse engineering of TCB Star Wars Scroller
Yes, I know, I'm quite obsessed with Star Wars Scrollers...
https://github.com/Uko-TAL/TCB-Star-War ... ngineering
Enjoy !
https://github.com/Uko-TAL/TCB-Star-War ... ngineering
Enjoy !
David aka Uko, from T.AL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Re: Reverse engineering of TCB Star Wars Scroller
nice article, I will read tomorrow
Just to clarify, do you mean this screen?
https://youtu.be/5pRelt_CPVk?t=3851
Just to clarify, do you mean this screen?
https://youtu.be/5pRelt_CPVk?t=3851
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DDD HDD / AT Speed C16 / TF536 / SDrive / PAK68/3 / Lynx Multi Card / LDW Super 2000 / XCA12 / SkunkBoard / CosmosEx / SatanDisk / UltraSatan / USB Floppy Drive Emulator / Eiffel / SIO2PC / Crazy Dots / PAM Net
Hatari / Steem SSE / Aranym / Saint
http://260ste.atari.org
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uko
- Obsessive compulsive Atari behavior
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- Joined: Sun Aug 25, 2019 6:45 pm
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Re: Reverse engineering of TCB Star Wars Scroller
Yes that's this one !
David aka Uko, from T.AL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Re: Reverse engineering of TCB Star Wars Scroller
Revealing the secrets of the Swedish legends, huh? Thanks for the write-up. Enjoyed reading it!
Daniel, New Beat - http://newbeat.atari.org.
Like demos? Have a look at our new Falcon030 demo It's that time of the year again, or click here to feel the JOY.
Like demos? Have a look at our new Falcon030 demo It's that time of the year again, or click here to feel the JOY.
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uko
- Obsessive compulsive Atari behavior
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- Joined: Sun Aug 25, 2019 6:45 pm
- Location: France
Re: Reverse engineering of TCB Star Wars Scroller
Hi Daniel, thanks for your feedback !
It would have been funny to title this post this way ! Secrets of Swedish legends revealed!
It would have been funny to title this post this way ! Secrets of Swedish legends revealed!
David aka Uko, from T.AL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Re: Reverse engineering of TCB Star Wars Scroller
Brilliant screen and great analysis.
The stars are 2 bitplanes, the Union logo is 1 bitplane but the scroller is also 2 bitplanes (1 colour where the rainbow rasters are mapped, 2 colours for the font border and 1 black colour) but are the logo and the stars mixed every frame? That's a lot of or-ing.
I wonder how TCB designed or wrote the sprite waveforms? I was always impressed with that.
The stars are 2 bitplanes, the Union logo is 1 bitplane but the scroller is also 2 bitplanes (1 colour where the rainbow rasters are mapped, 2 colours for the font border and 1 black colour) but are the logo and the stars mixed every frame? That's a lot of or-ing.
I wonder how TCB designed or wrote the sprite waveforms? I was always impressed with that.
Still got, still working: Atari 4Mb STe, 520STFM (x2), 2.5Mb STF, Atari 2600JR, Flashback 8 Gold.
Hardware: Cumana CSA 354, Ultimate Ripper, Blitz Turbo, Synchro Express II (US and UK Versions).
Hardware: Cumana CSA 354, Ultimate Ripper, Blitz Turbo, Synchro Express II (US and UK Versions).
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uko
- Obsessive compulsive Atari behavior
- Posts: 103
- Joined: Sun Aug 25, 2019 6:45 pm
- Location: France
Re: Reverse engineering of TCB Star Wars Scroller
Thanks to TCB and thanks for my analysis !
David aka Uko, from T.AL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Take a look at our last STe demo ! The Star Wars Demo and to its "making of"
https://github.com/Uko-TAL
Re: Reverse engineering of TCB Star Wars Scroller
mlynn1974 wrote: ↑Thu Sep 22, 2022 7:48 pm The stars are 2 bitplanes, the Union logo is 1 bitplane but the scroller is also 2 bitplanes (1 colour where the rainbow rasters are mapped, 2 colours for the font border and 1 black colour) but are the logo and the stars mixed every frame? That's a lot of or-ing.
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Re: Reverse engineering of TCB Star Wars Scroller
That font looks 3bpl to me 
Re: Reverse engineering of TCB Star Wars Scroller
Yeah it's a 3bpl move.w (16 pix y-dist, looks 8 pix-flickering due to offset in buffering) scroll on top of 1bpl logo. Stars or:d on top of everything (no and:ing).
Well, that's my guess from just looking at it anyway
Never disassembled another group's code.
Well, that's my guess from just looking at it anyway
Never disassembled another group's code.Re: Reverse engineering of TCB Star Wars Scroller
Yeah I thought the same. Some smart palette choices could probably mitigate the need for and:ing, although maybe they didn't even bother with that...
