APPLESOFT II BASIC is APPLE’s very much extended BASIC language. BASIC has BASIC Programming Manual can provide an introduction: it covers a. Apple II Programmer’s Reference: Applesoft Commands · Applesoft BASIC Frequently Chart, in PDF format · Applesoft Basic Programming Reference Manual. Download as PDF, TXT or read online from Scribd. Flag for inappropriate content. Save. Applesoft ][ Basic Programming Reference Manual. For Later. save.
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Use reset Ctrl C return to escape. When a new function is defined by a DEF statement, 6 bytes in memory are used to store the pointer to the definition.
In the example, the first two elements in the DATA statements must be numbers, and the third a string which may be a number. Line 20 causes the value of N and the square root of N to be printed. HOME is used to clear the text area and set tlie cursor to the top left corner of the currently defined text window. Provides an easy way to erase: If the screen is in mixed high-resolution graphics plus h lines of text, then attempts to plot points with y-coordinates in the range through will have no visible effect.
A “non-existent” element occurs in a DATA statement when any of the following is true: If you are a seller for this product, would you like to suggest updates through seller support? A “string” Is a literal enclosed ;rogramming quotation marks.
Full text of “Applesoft BASIC Programming Reference Manual – Apple Computer”
A character occupies the space of two low-resolution dots stacked vertically. Scientific notation is used to print real precision numbers, and is formatted as follows: Explore the Home Gift Guide.
The STEP statement previously shown can also be used with negative numbers to accomplish this same purpose. This statement may involve moving the cursor either up or down, but never to the right or left.
The third argument specifies the number of characters to be returned, beginning with character N. F is the “perfect order indicator”: The program tried to read too much data or insufficient data was Included in the program. Y2 may be greater than, equal to, or smaller than Yl. DEL a,-b ignored if a is not zero and if a is less than or equal to the program’s smallest line number.
Sometimes this Is easier than assigning the last random number to a variable in order to save it. If VTAB moves the cursor to a line below the text window, all subsequent printing takes place on that line.
We will place our shape definition maual below the index, for simplicity. In brief, these 4 switches choose between: The rest of the manual is a careful and exact description of every statement in the language and how each statement works.
INPUT will accept any of these characters or any concatenation of these characters in acceptable form e. The command has no visible effect when used In high-resolution graphics mode. If the argument is less than the value of the current cursor position, then the cursor is not referencce.
If a colon is typed in an INPUT response that does not begin with a quotation mark, all characters typed subsequently are ignored. All characters, including statement separators and blanks may be included. For intermediate to advanced programmers, this complete guide details all the features of the Applesoft language.
Each byte can represent up to three plotting vectors, one in section A, one in section B, and a third a move only in section C. VTAB uses absolute moves, relative only to the top and bottom of the screen: Enter the following program and RUN it.
Applesoft BASIC Quick Reference
RSR Sets the video mode so that the computer’s output prints as black letters on a white background. Because of the construction of color televisions, these colors vary from TV to TV and from one plotted line to the next. It Is not usually desirable to use this command zpplesoft the cursor is below the bottom margin of the text window: Note that the “H” in this command refers to “horizontal” and not “high-resolution”.
A character occupies the space of two low-resolution graphics dots stacked vertically.