13.07.2015 Views

Turbo Basic

Turbo Basic

Turbo Basic

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

If the program does any special POKEs to set the cursor location or change colorattributes while running in a window, the screen may not display correctly. However,if you zoom the Run window before execution, the display will be fine. Programsthat output graphics will take over the entire screen.Intermediate Floating-Point, PrecisionBecause <strong>Turbo</strong> <strong>Basic</strong> uses the "IEEE standard for floating point, intermediateresults are calculated to full 80-bit precision. Some Interpretive BASIC programshandle limited floating-point precision by adding to certain calculations a "fudgefactor" of 1 to elicit the correct result.. Since <strong>Turbo</strong> <strong>Basic</strong> gives you extended precision,code that takes advantage of limited precision arithmetic may have to bemodified.StringsString handling has been enhanced in <strong>Turbo</strong> <strong>Basic</strong>. The maximum string lengthhas been.expanded,from 255 to 32,767 characters. Also, the "garbage collection"performed periodically by Interpretive BASIC has been done away with-sothere's no good reason to use FRE intermittently to force this operation.Improved Memory Use<strong>Turbo</strong> <strong>Basic</strong> makes all your system's memory available to your programs, withoutthe stingy 64K limitation of Interpretive BASIC. Programs can have an unlimitedamount of code, up to 64K of scalar (nonarray) variables, up to 64K of string data,and an unlimited number of arrays, each up to 64K in length.PEEK and POKE LocationsWhen in graphics mode, text color has been preserved in PEEK/POKE location4E Hex offset in the BASIC data segment. PEEKs and POKEs of other locationsmay have unpredictable results.410 <strong>Turbo</strong> <strong>Basic</strong> Owner's Handbook

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!