Floppy Sound Emulator

News, questions and bugs reports about CosmosEx by Jookie. Now we have a Raspberry Pi in our machines!

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ccarl84
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Floppy Sound Emulator

Postby ccarl84 » Sun Feb 05, 2017 4:30 pm

Hello, A little idea. (Still a stupid idea?). :shrug:

Would it be possible to emulate the floppy drive noise as on the Steam emulator ?

This is for 2 reasons:
1) nostalgia ... Yellow_Colorz_PDT_23
2) checking the operation of the reader during loading. :coffe:

Thank you and later ...

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Jookie
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Re: Floppy Sound Emulator

Postby Jookie » Tue Feb 07, 2017 6:38 am

Interesting idea ;) I wanted to add a beeper, but I considered it to be not very useful, so I didn't add it there.

The floppy sound could be somehow added, but you would have to add a speaker somewhere (to Raspberry?), because currently there's no sound output device from CosmosEx....

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alexh
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Re: Floppy Sound Emulator

Postby alexh » Tue Feb 07, 2017 8:34 am

The STM32 (Gotek) which is a Cortex M0 based floppy emulator has a hack to add a buzzer to emulate floppy sounds.

I believe it requires no firmware. It just produces noise in response to the stepper motor I/O on the floppy disk interface.

1 x Buzzer.
1 x BC547 or similar bipolar transistor.
1 x 1k resistor.

http://kipper2k.com/amiga/gotek/gotekbuzzer.jpg
http://kipper2k.com/amiga/gotek/gotek.jpg
http://kipper2k.com/amiga/gotek/gotekmagbuzzer.jpg

Should be easy to add to all new and existing CosmsEx

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ccarl84
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Re: Floppy Sound Emulator

Postby ccarl84 » Tue Feb 07, 2017 12:17 pm

Jookie wrote:, but you would have to add a speaker somewhere (to Raspberry?)...


Why not ? I will connect to the RPI if the software devollepement is done.

Afterwards, Alexh's idea is interesting.

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Jookie
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Re: Floppy Sound Emulator

Postby Jookie » Tue Feb 07, 2017 12:31 pm

ccarl84 wrote:Why not ?


I'm not saying it's not possible or won't be done, I've just said that the current HW (without modifications) has no way to output sound :)

ccarl84 wrote:Afterwards, Alexh's idea is interesting.


Yeah, +1 from me on that ;)


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