Tandy BASIC

[Opry99er]

 

 

My first little program.  Couldn't figure out why it was rejecting "READ FREQ".... but then I shortened the variable to "FR" and all was well.

 

 

 

[Calibus]

9 hours ago, Opry99er said:

Couldn't figure out why it was rejecting "READ FREQ

 

FRE() is a reserved function name in Model 100 BASIC.

 

Z = FRE(0)

Returns the amount of memory available (free) for numeric memory in bytes

 

Z = FRE(' ')

Returns the amount of string space available (free) memory in bytes

 

(From page 14 of this document:  http://www.classiccmp.org/cini/pdf/Tandy/Model 100 Quick Reference.pdf  )

 

As a rule with these old dialects of BASIC - you can't create a variable that includes a reserved word.

 

You can use var names longer than 2 chars, but generally, only the first 2 chars were significant.

 

Thus

 

10 ABCXYZ = 99

20 PRINT ABLLLL

 

RUN

99

 

 

Edited December 1, 2019 by Calibus

[Opry99er]

Cool info!  I haven't worked my way through the manual yet... just typing code that should work in other BASIC dialects and then using the quick reference card to see where I screwed up.   

 

Thanks for the info!!