Vulcan-74 - A 6502 Powered Retro MegaProject

For discussing the 65xx hardware itself or electronics projects.
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BigDumbDinosaur
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by BigDumbDinosaur »

Oneironaut wrote:
Since you guys have mentioned pipe organ so often, I shall dedicate to doing that sample set next.

Accurately sampling a pipe organ is no simple matter, due to the dynamic and harmonic range of the instrument.

With large instruments, mixture ranks often go beyond 8 KHz, especially the mutations, e.g., nazard or quadragesima, the latter which sounds at G9 (~12 KHz) when C4 (middle-C) is played.  As mixture ranks typically are flue pipes tuned in just intonation, they generate very pure difference and sum frequencies, the latter going into the ultrasonic range.  The lowest difference frequency is usually the fundamental of the note actually being played, which results in a harmonically-rich sound that has challenged recording engineers ever since the days of Edison cylinders.

At the other end of the audio spectrum, there’s this:D  It’s sort of the acoustic equivalent of a laxative.  :lol:

Quote:
I can imagine it will sound very close to the original with samples on every 4th key and pushing through those 1200 watt 15 inch monsters!

What does your wife have to say about all these acoustic aspirations of yours?  :roll:
x86?  We ain't got no x86.  We don't NEED no stinking x86!
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Oneironaut
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Oneironaut »

Yes, the pipe organ simulation is going to sound like something different than the original for sure! Pushed through an 8 bit DAC, then off to a chain of 4 analog filters and then off to a 1200 watt sound system!
The reaction I expect will be : "hey, that sounds like a pipe organ, but.... better!"

The wife??
She is probably thinking... "if you run out of logic gates, feel free to take apart the TV, and crank that f$ckin' bass!".

Some eye candy...
V6.1.png
I am travelling for work this week so I will be stuck along the frozen north shore of Lake Superior with nothing but free time and a laptop.
Going to layout the mixer controls and VU meters in those empty wood triangular sections finally.
BigDumbDinosaur wrote:
Oneironaut wrote:
Since you guys have mentioned pipe organ so often, I shall dedicate to doing that sample set next.

Accurately sampling a pipe organ is no simple matter, due to the dynamic and harmonic range of the instrument.

With large instruments, mixture ranks often go beyond 8 KHz, especially the mutations, e.g., nazard or quadragesima, the latter which sounds at G9 (~12 KHz) when C4 (middle-C) is played.  As mixture ranks typically are flue pipes tuned in just intonation, they generate very pure difference and sum frequencies, the latter going into the ultrasonic range.  The lowest difference frequency is usually the fundamental of the note actually being played, which results in a harmonically-rich sound that has challenged recording engineers ever since the days of Edison cylinders.

At the other end of the audio spectrum, there’s this:D  It’s sort of the acoustic equivalent of a laxative.  :lol:

Quote:
I can imagine it will sound very close to the original with samples on every 4th key and pushing through those 1200 watt 15 inch monsters!

What does your wife have to say about all these acoustic aspirations of yours?  :roll:
barnacle
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by barnacle »

BigDumbDinosaur wrote:

What does your wife have to say about all these acoustic aspirations of yours?  :roll:
"What? What did you say? Speak up, there!" :mrgreen:

Neil
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Oneironaut
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Oneironaut »

Wait, just how OLD are you guys?

barnacle wrote:

"What? What did you say? Speak up, there!" :mrgreen:

Neil
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BigDumbDinosaur
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by BigDumbDinosaur »

Oneironaut wrote:
Wait, just how OLD are you guys?

Dunno about Neil, but I’m $4F.  :D
x86?  We ain't got no x86.  We don't NEED no stinking x86!
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Oneironaut
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Oneironaut »

Well then, my 00111000 year old CPU still has a bit more dust to collect!
I wonder what the average age is here?

ATTENTION LURKERS - PLEASE ANSWER...

How old are you?

I am curious because for some unknow reason, this thread seems to get a lot of views.
Figured it was mainly because of all the fancy breadboard eye candy, but maybe this era hits the mark with a certain age group.
It's certainly not about any good advice, I NEVER do anything the easy or traditional way (or even correct way).

All of this for me was born out of an early 80's computer show (BBC maybe?) on the Fairlight CMI.
I looked at the PET-4016 in the corner of the room and then that amazing synth on TV and the idea came to me.
At 10 years old I promised myself that no matter what, I will make a synth like that before I die.

Since I am on the road for work, staying at a little motel in the great white north for a few days, my small breadboard (new video circuit) came a long for the ride.
I have a rule about never watching TV, so this is my entertainment... cutting a few hundred more wires and breadboarding...
IMG_0749.jpg
By the time I leave, I hope to have the new greyscale video circuit tested.
If it works, then I will start on some of the final 6502 code for the user interface.

Brad


BigDumbDinosaur wrote:
Oneironaut wrote:
Wait, just how OLD are you guys?

Dunno about Neil, but I’m $4F.  :D
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GARTHWILSON
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by GARTHWILSON »

Oneironaut wrote:
Well then, my 00111000 year old CPU still has a bit more dust to collect!
I wonder what the average age is here?

ATTENTION LURKERS - PLEASE ANSWER...

How old are you?

I am curious because for some unknow reason, this thread seems to get a lot of views.
Figured it was mainly because of all the fancy breadboard eye candy, but maybe this era hits the mark with a certain age group.
65 here.  At least I'm no longer trying to figure out what I want to be when I grow up; but I don't look, act, or feel like 65, and I can climb the local canyon roads faster on my bicycle now than I could 45 years ago.  I study health a lot (not medicine like MDs study—health and medicine diverged just over a century ago), and apply what I learn, and I don't have any of the health problems a man of my age is expected to have.  I just started a new career, in electronic controllers for large CNC machines, as I mentioned in the Happy New Year and happy hacking in 2025! topic, which I expect to be doing now for many years.  The project I'm working on for them now is to make a tester for high-power transistor modules that can handle a 100-horsepower motor.  So I went from designing with thru-hole parts up through about 2006, to 0402 SMT parts that remind you of a fleck of pepper out of a pepper grinder (I wasn't allowed to go below 0402), to now the huge stuff.
http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?
barnacle
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by barnacle »

65 (oct 101, $41, 'A') in a month - close enough that the nice man on the desk at Prague Castle let me in on the old folks' discount last weekend :D

Neil
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BigDumbDinosaur
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by BigDumbDinosaur »

barnacle wrote:
65 (oct 101, $41, 'A') in a month - close enough that the nice man on the desk at Prague Castle let me in on the old folks' discount last weekend :D

Depending on where I go, I either get the old fogie’s discount or a veteran’s discount.  I have to show them that I’m a veteran, but for some strange reason, I’m never asked to show proof of (old) age.  :shock:
x86?  We ain't got no x86.  We don't NEED no stinking x86!
WCMiller
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by WCMiller »

Oneironaut wrote:
Well then, my 00111000 year old CPU still has a bit more dust to collect!
I wonder what the average age is here?

ATTENTION LURKERS - PLEASE ANSWER...

How old are you?
I'm 28 (in hexadecimal; 40 in regular old decimal. I think I prefer hex...)
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barrym95838
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by barrym95838 »

I reached #$3B a few weeks ago. I've been fascinated by 6502 assembly language since age #$0F.
Got a kilobyte lying fallow in your 65xx's memory map? Sprinkle some VTL02C on it and see how it grows on you!

Mike B. (about me) (learning how to github)
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Uncle Warthog »

I made it to +-+-+ late last year.
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Rob Finch
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Rob Finch »

Officially I'm about 59.75
Paganini
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Paganini »

Oneironaut wrote:
ATTENTION LURKERS - PLEASE ANSWER...

How old are you?
Hi Brad,

Not sure I qualify as a lurker, but I haven't been posting as much recently, or at all to this awesome thread, but I'm always happy when there's new activity on it! I'll be 45 (decimal!) in April.
"The key is not to let the hardware sense any fear." - Radical Brad
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Oneironaut
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Re: Vulcan-74 - A 6502 Powered Retro MegaProject

Post by Oneironaut »

Thanks for the replies!
A surprising age range, some too young for the C64, some that would have purchased them for their kids.

I had it in my mind that the typical age here would have put a 10-12 year old in front of a 6502 based machine like PET, VIC, Apple.
I sat for hours on the cold basement green carpet in front of a 1970's tube TV with my VIC 20 programmers manual, typing in and modifying the great demo programs in the back of the manual. The magic of assembly just out of my grasp until I migrated to a C64 and had the need to crack games!

I also had access to PETs at school, and that was where the magic probably started.
It's funny when some of the 30 something's chat about retro gaming and then use the phrase Pentium 1 in the conversation!
That feels like last week to me, imagine what they must think when my 4016 boots up and displays the copyright 1977 message!

Brad
Last edited by Oneironaut on Sat Feb 08, 2025 4:50 am, edited 1 time in total.
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