A 18 time speed-up! Writing assembly is not always easy, but it is definitely worth it! However, as I mentioned in my previous post, this CPU is primitive by today standards. Its resources are scarce and I have to admit that I was not used to 8 bit arithmetic: The provides very efficient conditional branching instructions. The drawback is that you can only jump bytes backwards and bytes forward. As most instructions are 2 or 3 byte long, you have to code tight and carefully layout your instructions if you want to use them!
Remember that most of the code all the logic, state machine, textual displays… is still written in C. This remaining of code is less systematic and would be much more difficult to write in ASM.
Coding in Assembly for an Apple II – Coder's Thoughts
But it does not matter much, as the time spent in these parts is also much smaller. To conclude, I would therefore say that nowadays it is not too difficult to write a program for Apple II computers. Thanks to cc65, you can write the whole program in C and, if you require more performance, rewrite the most time consuming function in ASM. And thanks to modern editors and emulators, the process of writing, testing and debugging is way more easy and pleasant than it was thirty years ago!
- Apple II Library: Applications?
- La seducción del vampiro (Pandora) (Spanish Edition).
- Bloodsucking Fiends: Book 1: Love Story Series.
- Ghostgirl (Spanish Edition).
When coding such a small project in C, I could live without a debugger. But such was not the case anymore when I started to rewrite some parts in assembly. But I did not want to rewrite all my program, only the inner loops. And return from it… Fortunately, this part is well documented. The only caveat I could not overcome was to access the symbols declared in C.
For that purpose, I used AppleCommander. And one bright spot is that it can be used from the command line, thus allowing to invoke it as a build step in the Makefile.
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In order to test my program and debug it, I used an emulator: It is quite accurate, but most important, it also features a competent debugger! Applers around the world are using DOS Boss to learn about their Apple, customize their systems and truly personalize their personal computers. It was one of the first educational software products for personal computers to successfully use an interactive graphical simulation as a learning environment.
The player uses a mechanical boot to kick a series of objects off a conveyor belt; each object will score some number of points, possibly negative. To ensure that the boot kicks only the positive-scoring Fill in forms, type addresses on envelopes, or write memos. A similar version with fewer disk-testing routines was available for the Apple IIc. Requires a joystick, graphics tablet, trackball or paddles. Select from one of 76 different plans, rotate shapes and move them around the screen with game paddles or joysticks while the computer handles the calculations.
Also contains a series of drills and quizzes. It was originally designed and developed by Will Harvey in for the Apple II, and quickly ported to other systems of the era. Music Construction Set offered a graphical user interface, a novelty at the time of its release, which allowed users to drag and drop notes, accidentals, and other notational symbols right onto the staff, play their compositions, and print Shape Editor makes shape construction a snap , Hi-Res Character Editor create and edit hi-res "shape fonts" , three demo programs that teach a ton about using shape tables and hi-res graphics in your Applesoft programs, and more.
Applications Hayes Hackamatic, The 19xx K. It supports the Hayes Smartmodem or Prometheus Promodem. Written by a person who went by the alias "Automan" and apparently released by the Computer Pirates of Utah organization. The disk is a typical autoboot package and exhibits several demo scene-like visual and audio components in addition to the underlying utility of the software. Since the cracking tools are Applications S-C Macro Assembler v1.
Includes tests for motherboard RAM and ROM, keyboard and game paddles, tape reading, writing, and verification, color displays, and expansion cards. Applications Grade Manager v2. Choose from several variations of two grading methods--percentage grading and standard scoring. Includes 24 compositions, and allows the user to write and play back their own.
- School of Computer Science and Statistics Navigation.
- SCSS Treasures - School of Computer Science and Statistics - Trinity College Dublin.
- Producing a disk image.
- The assembler.
Applications Merlin-8 v2. Merlin 8 was a commercial macroassembler for the Apple II series of computers.
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Initially available for DOS 3. All of these variations were included in the same retail package as time went on. In addition to the standard editing Applications Ascii Express - The Professional v3. Applications Trader Disk No. Search the history of over billion web pages on the Internet. Ontario Department of Lands and Forests: Applications, utilities and general purpose software for the Apple II. Zork I favorite favorite favorite favorite 1 reviews. Make Garfield go on a diet by guessing the word he has in mind.
Garfield Double Dares is a word game with two kinds of gameplay. An introduction to the Apple IIe computer, this program was designed to gently lead new Apple owners to a level of confidence and competence with basic keyboard and command functions. VisiCalc was the first spreadsheet computer program, originally released for the Apple II. Dinosaur Discovery is an educational game in which students explore, solve puzzles in reading, math, geography, and science, and attempt to uncover the mystery of a professor who was trying to hatch dinosaurs on an isolated island.
Design to complement The Print Shop, The Print Shop Companion featured additional graphics, a new graphics editor, a border editor, a font editor, "Tile Magic" similar to The Print Shop's kaleidoscope feature , Creature Maker, and a weekly and monthly calendar generator.