Custom Boot Chime Guide?

[ifrit05]

Is there a step-by-step guide somewhere on how to replace the boot chime using a ROM-inator II?

 

[sircabulon]

I am also interested in this. Have you reached out to BMOW?

 

[Skate323k137]

I don't recall it being too difficult; honeslty I only remember I did. I'd be surprised if it's not in the documentaion somewhere, or evident if you boot from the provided volume and explore its content.

 

[sircabulon]

Changing the Macintosh Start-Up Sound | Big Mess o' Wires

www.bigmessowires.com

 

[Skate323k137]

Changing the Macintosh Start-Up Sound | Big Mess o' Wires

www.bigmessowires.com

This is for the original ROMinator for machines like 512k/plus, not the ROMinator II SIMM.

 

[ifrit05]

I am also interested in this. Have you reached out to BMOW?

No not yet. Will try in a bit!

I don't recall it being too difficult; honeslty I only remember I did. I'd be surprised if it's not in the documentaion somewhere, or evident if you boot from the provided volume and explore its content.

Nope, nothing in the rom disk to do that. AFAIA, you need to append a sound file to a binary blob and insert the hex into the rom manually, but the rom layout is different in BMOW's rom sooooo yeah may have to contact him.

 

[Skate323k137]

Nope, nothing in the rom disk to do that. AFAIA, you need to append a sound file to a binary blob and insert the hex into the rom manually, but the rom layout is different in BMOW's rom sooooo yeah may have to contact him.

He is here, @bigmessowires but emailing BMOW's support email is always a sure shot.

 

[bigmessowires]

The startup sound in the ROM-inator II isn't a single digitized sound sample that you can easily replace. It uses the Sound Manager to create a chord by layering multiple simple tones with different frequencies at the same time. It's been a while, but I think the data for a single tone is the same data as for the stock Mac IIsi ROM - only the playback details with the Sound Manager are different. Unfortunately it's quite complicated and involves a lot of difficult ROM spelunking. There's some related info here that could get you started in the right direction: https://www.bigmessowires.com/2016/06/10/rom-hacking-tutorial-with-rom-inator-ii/

 

[dougg3]

I have a really old blog post (predating all the modern ROM SIMM developments) about how to hack the IIci ROM to add a sampled startup chime. I’d imagine the process on the IIsi ROM used in the ROM-inator II would be similar. It’s not exactly the same, since things are likely moved around. It might give enough hints for someone to figure it out.

Downtown Doug Brown » Mac IIci custom startup chime, part II

www.downtowndougbrown.com

It would be cool to make a utility for automatically adding patches like this to the ROMs…

 

[ifrit05]

It would be cool to make a utility for automatically adding patches like this to the ROMs…

I would pay money for this

 

[olePigeon]

I would pay money for this

Ditto. I'd love an easy ROM sound editor.