Disassembly of the original desk accessories:

* [Calculator](calculator.s) - complete!
* [Date](date.s) - complete!
* [Puzzle](puzzle.s) - complete!
* [Show Text File](show.text.file.s) - in progress! 95% complete
* [Sort Directory](sort.directory.s) - in progress! 40% complete

New desk accessories:
* [Show Image File](show.image.file.s) - complete!
* [This Apple](this.apple.s) - complete!
* [Eyes](eyes.s) - complete!

## Desk Accessory Details

* Loaded at $800 through (at least) $14FF
* Copy themselves from Main into Aux memory (same location)
* Can call into ProDOS MLI and MGTK/A2D entry points ($4000, etc)
* See [API.md](API.md) for programming details

## Files

* `Makefile` - cleans/builds targets
* `orig/*.bin` - original binary (type $F1, auxtype $0640, start $800)
* `*.s` - source (originally generated using da65, now modified)

## Build Instructions

On Unix-like systems (including Mac OS X) `make all` should build
build the desk accessory files (original and new) into `out/`
output with a `.$F1` suffix, representing the $F1 file type required.

For the original DAs, the `.$F1` and `.bin` files can be compared
using `diff` to ensure that no changes have been introduced by the
disassembly process.

With `desk.acc` as the current directory, run `res/go.sh` to automatically
verify that the files are unchanged from the original, and also generate
semi-useful stats showing disassembly progress.

## Getting The DAs Onto Your Apple II

There are a handful of approaches for getting the files on your real
or virtual Apple.

### Create a Disk Image

To produce a ProDOS disk image with the DA files, install and build the
[Cadius](https://github.com/mach-kernel/cadius) tool:

```
git clone https://github.com/mach-kernel/cadius /tmp/cadius
make -C /tmp/cadius
CADIUS=/tmp/cadius/bin/release/cadius
```

Then from the `desk.acc/` directory, run: `go/package.sh`

This will generate: `desk.acc/out/DeskAccessories.2mg`

Mount this disk image in your emulator, or transfer it to a real floppy
with [ADTPro](http://adtpro.com/), then follow the install instructions
below.

### Mounting Folder via the Virtual ]\[ Emulator

If you use [Virtual \]\[](http://www.virtualii.com/) as your emulator,
you can skip creating a disk image.

With `desk.acc` as your current directory, create a `mount` folder,
run the `res/go.sh` script, and the built files will automatically be
copied in. Then run Virtual ]\[ and use the **Media** > **Mount Folder
as ProDOS Disk...** menu item. A new ProDOS volume called `/MOUNT` will
be available.

### Other

If you need to copy the files some other way (e.g. via 
[CiderPress](http://a2ciderpress.com/)), you need to do the following:

Transfer the `.$F1` files in the `out` directory, ensuring you:

* Drop the suffix
* Replace `.` in the name with spaces
* Ensure they have ProDOS file type `$F1`
* Ensure they have start address `$800`
* Ensure they have auxtype `$0640` (to match the originals)

The last three are tricky, and depend on how you're copying the files.

## Install Instructions

Once you have the files accessible on your Apple:

* Copy the files into your `A2.DESKTOP\DESK.ACC` folder (using A2D or any other tool)
* Restart so A2D picks up the new DA

Tips:

* You can use the Sort Directory DA to order the files, which controls
    the menu order:
  * Open the `A2.DESKTOP\DESK.ACC` folder
  * Hold Open-Apple and click on each file in the desired order
  * Select Sort Directory from the Apple menu, and verify the order
  * Restart