[Blindapple] Clicking DOS 3.3

[Zachary Kline]

Jason,

For interest’s sake, there is an apple emulator for Mac OS with does actually support drive noise. It doesn’t support the Echo II though, as far as I’m aware, so it’s less useful for our purposes. Just thought you might want to know.
Best,
Zack.
> On Sep 14, 2017, at 12:26 PM, Jayson Smith <jaybird at bluegrasspals.com> wrote:
> 
> Hi all,
> 
> 
> I have something I came up with a month or two ago, and it's a bit off the wall. One of the things I've always missed about MESS/MAME or any other Apple II emulator is the lack of disk noise. I've come up with a partial solution for DOS 3.3. It doesn't give us the motor noise, but it does make seeks make noise. What I've done is to modify the DOS 3.3 disk drive head seek routine located at $BA00 so it clicks the speaker as it's moving the drive head. This means you get to hear the drive moving from track to track as files are read or written. In my limited tests this hasn't harmed any disks on my real Apple, and it certainly shouldn't do any harm under emulation.
> 
> 
> Attached is a zip with a disk image called dosclick.dsk. I zipped it because it's almost entirely blank, so compresses extremely well. It has a copy of ProntoDOS with the clicking patch already installed. There are two sixteen-byte binary files on the disk, click and no click. BRUN or BLOAD either one to get the desired effect. If you BRUN click, it will click the speaker once.
> 
> 
> I hope someone gets some use out of this.
> 
> 
> Jayson
> 
> 
> <dosclick.zip>_______________________________________________
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