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Questions tagged [apple-ii]

8 questions
26
votes
5 answers

CALL -151 What did it do on the APPLE ][

A long time ago I had an apple ][ . I remember the command call – 151 But I can not remember what it did ?
Charles Faiga
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In my 3D Renderer in Apple 2, one of the vertices is at the wrong position

I have been trying to make a 3D renderer in the Apple ii using Applesoft Basic. The renderer uses the Weak Perspective Projection. However when I try rendering a cube, one of the vertices, specifically the second one I draw is way above where it…
Roger Mariña
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1 answer

Apple IIe 6502 Assembly Accessing Disk

I'm currently writing a program for the Apple IIe that requires reading/writing files from disk. In reading the books I've found archived online about assembly language for the Apple II I've come across the $C060 subroutine which is for accessing…
Kuang
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1 answer

How to get code to correctly run on an Apple ii

I've written a small piece of code (add.asm, shown below) in 6502 assembly but are having some problems to get it to run correctly on an apple ii emulator. Using the config file below, and ca65 and ld65, I can get a binary to compile. Then, using…
Andrew
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3 answers

Applesoft Basic, how to hide the flashing cursor?

I’ve finally decided to build a monthly budget program for an Apple //e, coming along nicely. Right now I’m using the AppleWin emulator. Anyone know how to hide the cursor in Applesoft Basic? I was thinking of either hiding it using a Poke or…
Kenneth
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0 answers

Apple II : Prodos, prefix, 0 length prefix and MLI calls

Hi Apple // enthusiasts, I have a simple program on my Apple IIc in assembly language. It starts by getting a filename from the user (GETLN), then it opens the corresponding file with a MLI call ($C8) To my suprise, the MLI call returned error #…
bruno185
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Syntax Err GET on an Apple II, AppleDOS 3.3 using Applesoft

I am using the AppleWin emulator, setup as an Apple IIe, Apple DOS 3.3 with Applesoft. My goal is to make a simple game. This simple GET program works fine at the ] prompt (I am not sure, but I think it's called the monitor). 10 GET V$ 20 PRINT…
Tomas Daniel
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6502 randy hyde subroutine problem "JSR INCRTN"

I am following the A totorial in the book using 6502 assembly language by randy hyde there is a part in chapter 14, section 7 where he writes "jsr incrtn" the problem is that he has not created a subroutine called incrtn here is the full code, …
Xander Weiss-Lemieux
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