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STay4Evr by Cream [web]
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popularity : 62% |
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alltime top: #7342 |
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added on the 2024-07-06 22:51:31 by ultra  |
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comments
You can find all videos for each part on ultra's
YouTube channel.
The playlist with all parts you can find here:
https://www.youtube.com/playlist?list=PLB2PJ92jWGeq4XvWJnkxbpuY6wXIAiyDV
Sommarhack presentation (does not show credits and greetings screen):
https://youtu.be/wPIV0U9w4pA
Credits screen
https://youtu.be/5_KkhtmFOtQ
Greetings screen
https://youtu.be/b5NdGGQlasg
The G.O.A.T. Demo (Full capture including all songs):
https://youtu.be/6_FOIYH9OCU
Under The Waves (Full capture including all songs):
https://youtu.be/9Xmhrz5C86E
Guardians of Mana (Full capture including all songs):
https://youtu.be/TII2xUr6Kws
YouTube channel.
The playlist with all parts you can find here:
https://www.youtube.com/playlist?list=PLB2PJ92jWGeq4XvWJnkxbpuY6wXIAiyDV
Sommarhack presentation (does not show credits and greetings screen):
https://youtu.be/wPIV0U9w4pA
Credits screen
https://youtu.be/5_KkhtmFOtQ
Greetings screen
https://youtu.be/b5NdGGQlasg
The G.O.A.T. Demo (Full capture including all songs):
https://youtu.be/6_FOIYH9OCU
Under The Waves (Full capture including all songs):
https://youtu.be/9Xmhrz5C86E
Guardians of Mana (Full capture including all songs):
https://youtu.be/TII2xUr6Kws
sorry this time as links :)
Sommarhack presentation (does not show credits and greetings screen):
https://youtu.be/wPIV0U9w4pA
Credits screen
https://youtu.be/5_KkhtmFOtQ
Greetings screen
https://youtu.be/b5NdGGQlasg
The G.O.A.T. Demo (Full capture including all songs):
https://youtu.be/6_FOIYH9OCU
Under The Waves (Full capture including all songs):
https://youtu.be/9Xmhrz5C86E
Guardians of Mana (Full capture including all songs):
https://youtu.be/TII2xUr6Kws
Sommarhack presentation (does not show credits and greetings screen):
https://youtu.be/wPIV0U9w4pA
Credits screen
https://youtu.be/5_KkhtmFOtQ
Greetings screen
https://youtu.be/b5NdGGQlasg
The G.O.A.T. Demo (Full capture including all songs):
https://youtu.be/6_FOIYH9OCU
Under The Waves (Full capture including all songs):
https://youtu.be/9Xmhrz5C86E
Guardians of Mana (Full capture including all songs):
https://youtu.be/TII2xUr6Kws
Great STuff! Cannot wait to run it on real HW! Congrats!
on ST the pure YM will never be able to play SID songs by 100%
respect for making a transpiler as the result is very enjoyable
respect for making a transpiler as the result is very enjoyable
Very cool & lovely presented!
amazing
After a sleep-poor night, I'm still trying to get my head around this one.
Near-faithful SiD tunes on YM2149, thanks to coding wizardry. Mad coding skills being indistinguishable from magic and all that. Also see the Zero Bitplane entries, when those are added.
Questions, can this technique be used with a standalone ST production, or is there some level of C64 emulation still in there? It was mentioned these tunes will be made to work in SNDH Player.
Near-faithful SiD tunes on YM2149, thanks to coding wizardry. Mad coding skills being indistinguishable from magic and all that. Also see the Zero Bitplane entries, when those are added.
Questions, can this technique be used with a standalone ST production, or is there some level of C64 emulation still in there? It was mentioned these tunes will be made to work in SNDH Player.
cih... maybe some words to make it more clear what this is:
-the sid emulation is fully based on ym2149 features + timers. means this works fine on a 520st in the same quality. no dma replay. except of filters all is emulated.
-all rob hubbard musics have been reassembled and translated to 68k. no 6502 emulation
-the other musics are streamed with on the fly depacking. streamed means here the sid registers are streamed.
-the basic is a full functional c64 basic. no 6502 emulation. the entire kernal has been reassembled and translated to 68k code.
all musics will be released as sndh because it's a normal ym2149 song. and of course it can be used in a stand alone st production.
-the sid emulation is fully based on ym2149 features + timers. means this works fine on a 520st in the same quality. no dma replay. except of filters all is emulated.
-all rob hubbard musics have been reassembled and translated to 68k. no 6502 emulation
-the other musics are streamed with on the fly depacking. streamed means here the sid registers are streamed.
-the basic is a full functional c64 basic. no 6502 emulation. the entire kernal has been reassembled and translated to 68k code.
all musics will be released as sndh because it's a normal ym2149 song. and of course it can be used in a stand alone st production.
Very nice. The SID tunes sound quite legit!
This is excellent! Great sound quality and neat code. As usual. :)
Thanks for the clarification Ultra!
Great to see Cream again.
Great to see Cream again.
Insane prod. Insane commitment. Love it.
Excellent demo. Makes me want to fix my MegaSTE even quicker to watch it on a real one.
Sound nice.
Wow, didn't knew it is possible to come so close to SID on ST!
Impressive sound effects!
Wow! Just wow! :-)
An incredible achivement that needs a lot of time to digest to it's fullest. Not only the incredible YM-programming, but a full port of the C64 basic?
Thanks for this one Cream :)
Thanks for this one Cream :)
wow!
neato :)
Really enjoying listening to the Mana Screen!
this is realy impressive
Great work, I didn't know the YM2149 could sound as close as SID !
Impressive SID rendition on YM, but
Quote:
this alone is worth the thumb already. =D-the basic is a full functional c64 basic. no 6502 emulation. the entire kernal has been reassembled and translated to 68k code.
any details how the 64 volume levels work?
Oh, sorry... I just saw that.
How do the 64 volume trick work?
It's actually pretty simple on the Atari. It doesn't work with a normal YM voice. You have to use PWM (or something similar), for example.
When you create a PWM voice, you normally switch between $f and $0 at full volume.
The trick is not to switch between $f and $0, but between $f and $8 or $3 and $2 (softsid also works this way). The difference between the output volumes is then the effective volume... In the example $f and $8, you create a waveform with a DC offset (DC voltage component), which can lead to crackling (see flash gorden at the beginning). That's the Atari side. Easy...
Now comes the part where you have to do a little more. It's best to precalculate in C or something similar. The real trick is to calculate a table of which volume values to use.
To create this table, you need to know which ym volume produces which output volume. It is important to note that the ym is not linear! There are tables for this, e.g., in steem. The values are, for example, from 0-1. Let's call them outputVolume.
So you think in advance about what volumes you will need. How much and what progression. In our case for the C64, we decided on a linear progression of the volume and we took 64 volumes... Theoretically, more is possible... but the more you use, the less likely it is that you will hit the exact volume.
Then take a value from your target volume table, e.g., 0.5.
Next, use the table from Steem to find two suitable values.
One for hi and one for lo. You can see whether the values match by calculating:
outputVolume = outputVolumeHi-outputVolumeLo
Take values for lo and hi that produce the smallest error. Do this for all values in your imaginary volume table...
And congratulations, you've calculated your volume table to use on Atari.. :)
How do the 64 volume trick work?
It's actually pretty simple on the Atari. It doesn't work with a normal YM voice. You have to use PWM (or something similar), for example.
When you create a PWM voice, you normally switch between $f and $0 at full volume.
The trick is not to switch between $f and $0, but between $f and $8 or $3 and $2 (softsid also works this way). The difference between the output volumes is then the effective volume... In the example $f and $8, you create a waveform with a DC offset (DC voltage component), which can lead to crackling (see flash gorden at the beginning). That's the Atari side. Easy...
Now comes the part where you have to do a little more. It's best to precalculate in C or something similar. The real trick is to calculate a table of which volume values to use.
To create this table, you need to know which ym volume produces which output volume. It is important to note that the ym is not linear! There are tables for this, e.g., in steem. The values are, for example, from 0-1. Let's call them outputVolume.
So you think in advance about what volumes you will need. How much and what progression. In our case for the C64, we decided on a linear progression of the volume and we took 64 volumes... Theoretically, more is possible... but the more you use, the less likely it is that you will hit the exact volume.
Then take a value from your target volume table, e.g., 0.5.
Next, use the table from Steem to find two suitable values.
One for hi and one for lo. You can see whether the values match by calculating:
outputVolume = outputVolumeHi-outputVolumeLo
Take values for lo and hi that produce the smallest error. Do this for all values in your imaginary volume table...
And congratulations, you've calculated your volume table to use on Atari.. :)
this is rulez
AWESOME! That means we could have C64 Sound already in 1985 when the ST was released. Just WOW!
submit changes
if this prod is a fake, some info is false or the download link is broken,
do not post about it in the comments, it will get lost.
instead, click here !
---------
During a thorough cleaning session in the attic we
found an old C64 demo disk of ours.
In good old Cream tradition, the demo was forgotten
for decades and was never finished.
Now after decades we faced the challenge, freed
ourselves from the clutches of numbness and brought
it to a releasable state.
We used a transpiler we developed years ago to convert
the C64 disk into an Atari ST disk...
The "menu" of the demo disk is a bit unusual and
interactive. As an old C64 fanboy you will surely
find your way through it. Noobs can also just watch
the video (shame on you).
The demo beams you directly into the year 1985/1986.
Due to some interferences from parallel universes,
there may also be temporal distortions.
You are trapped in a very small brown box...
Face it... You have to STay4Evr!
...in any case enough time to read the round about 55 kb
scroll texts...
(If you want to read all the scroll texts you should not
watch the videos. The videos were recorded earlier and
the scroll texts were expanded afterwards.)