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PC start-up chime


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#1
Attil@

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I've found a great circuit on the net that can play back WAV data from an EEPROM. I've got the idea to make a Mac-styled start-up chime player for my PC. I recorded the chime from my old PowerMac 8500 and did all the editing. It's ready to be programmed into the EEPROM, what I cannibalized from a broken P2 MoBo. I'll tell more details when it will be finished, because I can't make a PCB and program the EEPROM at home, only at my friend, but he will have time for me on monday or tuesday.
Are you interested in this?

#2
fireshark

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How will u tell the comp to tell the circuit to play it?

#3
amdprophet

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I'm interested although I would want a different WAV file to play.

#4
Attil@

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When the power goes on, the circuit plays the sound. In this state I have the drawing it will play looped, so I'll need some timing circuit or something similar.

amdprophet: Yes, you can play an other sound, but it has to be mono 8-bit PCM raw data regardless to the sampling rate. But it has to fit in the EEPROM. I used the 16kHz sampling rate and the whole thing fits into 54KB.

I just have to hack my BIOS to show an Apple bootscreen now :)

#5
bofors

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Attil@, perhaps you would interested in working on EFI? I think you could implement the start-up chime purely in software.

#6
i1sam

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When the power goes on, the circuit plays the sound. In this state I have the drawing it will play looped, so I'll need some timing circuit or something similar.

amdprophet: Yes, you can play an other sound, but it has to be mono 8-bit PCM raw data regardless to the sampling rate. But it has to fit in the EEPROM. I used the 16kHz sampling rate and the whole thing fits into 54KB.

I just have to hack my BIOS to show an Apple bootscreen now :)


hi... do you have a success now on the bios bootscreen to show Apple Logo??... sorry you started this... i also started a thread asking this... i wanted also to change the acer logo of my lappy

#7
Attil@

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The circuit is designed, but I won't publish it till I haven't tested it. This is because I don't want to put here a non-working thing.
bofors: No, thanks. I am an electronics hobbyist. I can't program very well.
i1sam: it was just an idea. Old IBM computers (300GL series) had an option while flashing BIOS to change the startup screen. But I didn't see this thing since then.

#8
i1sam

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The circuit is designed, but I won't publish it till I haven't tested it. This is because I don't want to put here a non-working thing.
bofors: No, thanks. I am an electronics hobbyist. I can't program very well.
i1sam: it was just an idea. Old IBM computers (300GL series) had an option while flashing BIOS to change the startup screen. But I didn't see this thing since then.

THANKS for the quick reply attil@... i know intel board has this utility to custom thier flash screen bios.. i dont know if bofor already done this... its supported to newer and some older intel board... i just did not tried it yet on my intel board d945gnt... i just hoping a general appz... hope acer has the same(i dont have high hopes since their are OEM).... thanks again... ill be following up your success on the chime bootup... GOODLUCK Attil@

#9
bofors

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i know intel board has this utility to custom thier flash screen bios.. i dont know if bofor already done this... its supported to newer and some older intel board... i just did not tried it yet on my intel board d945gnt...


I have had not tried this yet, but I know you are talking about. It is a feature of Intel's Integrator Tool Kit (ITK), it lets you customize the BIOS splashscreen.

http://www.intel.com...otherbd/itk.htm

But I doubt it will work on an MSI board. Some people might know how to work with that board on at Wim's BIOS forum:

http://www.wimsbios.com/

#10
i1sam

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I have had not tried this yet, but I know you are talking about. It is a feature of Intel's Integrator Tool Kit (ITK), it lets you customize the BIOS splashscreen.

http://www.intel.com...otherbd/itk.htm

But I doubt it will work on an MSI board. Some people might know how to work with that board on at Wim's BIOS forum:

http://www.wimsbios.com/

thanks a lot bofor... i been following all your thread.. (got my mobo same as yours.. except those 2 dell lcd... wow i love those)... will try the link now..

Attil@... ill be watching the devt of your chime...

#11
Attil@

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OK... I bought the parts for the project and the PCB drawings are ready too! I think it will be ready tomorrow.

#12
Whiterat

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I just came accross this thread, and boy am I impressed at the level of ingenuity going into this project!

I remember the old knockoff macs back in the day, I reckon its going to happen all over again now, but this time 10x better :D

Im just going to sit back and admire the masters at work :)

#13
amdprophet

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I've been sitting back, but I'm interested in helping out so I've been researching a lot. I hope this boot-up chime mod works. :)

#14
Attil@

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I'm going to make the PCB now. It's all prepared, so I'll inform you today if it's working, but it should be :)

#15
Korrupted

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This sounds like a really neat little project. Please tell us your results! :)

#16
Attil@

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OK... I'm exposing the bottom side now. Then comes the top side and I'll etch it :)

#17
amdprophet

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Are you using etching acid? If so, do you know where I could buy some?

#18
Attil@

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I'm etching with ferrous chloride... and my friend had some... But I think I'll make an other board (single sided), because the routes are very thin on one side and I have a lot of work to correct them (they are interrupted).

#19
Attil@

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OK, I'm gonna release the schematic and the prepared EEPROM file. There are 3 files in the ZIP archive:
schematic.png - the schematic drawn in Eagle 4.16. If you are interested in the Eagle files, write me.
macchime.bin - the chime sampled at 16kHz, for 512kbit EEPROMs
macchime128k.bin - same as macchime.bin, but padded with silence to fill a 1Mbit EEPROM (that I use)

RENEMBER!
You are giong to build this project at your own responsibility! I am not responsible for any damage caused by this circuit!


PS: the chime is sampled from my Power Macintosh 8500/180

Attached Files



#20
Antman

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would it be possible to get a copy of the startup chime wav file you made and if someone could post the splash screen that we would use for our bios as well?





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