Download PDF by Carl M. Evans: Atari BASIC faster and better

By Carl M. Evans

ISBN-10: 0936200294

ISBN-13: 9780936200293

Atari Basic-Faster and Better

Atari info sequence quantity 1

Carl M. Evans

Show description

Read or Download Atari BASIC faster and better PDF

Best languages & tools books

New PDF release: Programming on Purpose II: Essays on Software People

A suite of essays drawn from Plauger's well known per month column, "Programming on Purpose," in desktop Language journal. Focusing all through on people-related issues, Plauger exhibits software program writers the way to be relatively inventive; how one can safeguard the end result in their ingenuity; easy methods to combine know-how and politics; and the way to not write shelfware.

Chris Rolliston's Delphi XE2 Foundations - Part 1 PDF

Half 1 of a complete consultant to the language and center non-visual libraries of Embarcadero Delphi XE2; during this half, simple language syntax and OOP performance are coated. Adopting an built-in technique, the publication covers either more moderen and older positive aspects along each other. whereas it will not train you ways to software, it assumes little Delphi wisdom in particular.

Additional resources for Atari BASIC faster and better

Sample text

You might try using another location. Just be sure that the location is safe and that the value of MLEND is 33 more than MLSTART. Are you wondering where I got the numbers to be POKEd? The assembly listing gave us the hexadecimal codes for the USR routine. The command STA POINT in line 1150 generated the machine language instruction 85CC. Converting this to decimal: 85 is 133 decimal CC is 204 decimal. The rest of the program was translated in a similar fashion. We could have also gotten the decimal numbers by PEEKing the appropriate memory locations after loading the object program from disk or cassette.

You must load all of the routines you don't need in order to get the one that you need. This wastes valuable memory space. 4. If you write a program that uses a routine from one of these commercial packages, you will have to pay royalties if you decide to sell your program. The USR routines in this book avoid those four problems. This way you get the maximum in flexibility and performance. You also don't need to worry about paying royalties as long as you don't resell these routines as a library or copy the pages out of this book to serve as your documentation.

Also, every REM statement is just one more line number for BASIC to sort through. 14. Use indirect addressing for GOTOs and GOSUBs - the reasons for this are similar to those given in (11) above. 15. Pack IF -THEN logic statements - this one is a little less obvious, and the rewards will vary, but you can replace an IF-THEN statement sequence such as 100 110 120 130 IF IF IF IF X<101 X>100 X>300 X>800 THEN Y = 0 AND X<301 THEN Y = 1 AND X<801 THEN Y = 2 THEN Y = 3 with a logical statement like Y = (X>100)*«X>100)+(X>300)+(X>800)) Before you try anytl;ing like this, I suggest that you go back and re-read the section on logical operators in your BASIC manual.

Download PDF sample

Atari BASIC faster and better by Carl M. Evans

by Brian

Rated 4.90 of 5 – based on 49 votes