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⌂ ∞ Elite on the BBC Micro and NES

Text: TT42

[NES version, Bank 2]

       Name: TT42                                                    [Show more]
       Type: Subroutine
   Category: Text
    Summary: Print a letter in lower case

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * TT45 calls TT42
             * TT27 calls via TT44




 Arguments:

   A                    The character to be printed. Can be one of the
                        following:

                          * 7 (beep)

                          * 10-13 (line feeds and carriage returns)

                          * 32-95 (ASCII capital letters, numbers and
                            punctuation)



 Other entry points:

   TT44                 Jumps to TT26 to print the character in A (used to
                        enable us to use a branch instruction to jump to TT26)



.TT42

 TAX                    ; Convert the character in A into lower case by looking
 LDA lowerCase,X        ; up the lower case ASCII value from the lowerCase table

.TT44

 JMP TT26               ; Print the character in A