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⌂ ∞ Elite on the BBC Micro and NES

Save and load: PrintSaveHeader

[NES version, Bank 6]

       Name: PrintSaveHeader                                         [Show more]
       Type: Subroutine
   Category: Save and load
    Summary: Print header text for the Save and Load screen

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * SVE calls PrintSaveHeader




 Arguments:

   V(1 0)               The address of a null-terminated string to print



.PrintSaveHeader

 LDY #0                 ; Set an index in Y so we can work through the text

.stxt1

 LDA (V),Y              ; Fetch the Y-th character from V(1 0)

 BEQ stxt2              ; If A = 0 then we have reached the null terminator, so
                        ; jump to stxt2 to return from the subroutine

 JSR TT27_b2            ; Print the character in A

 INY                    ; Increment the character counter

 BNE stxt1              ; Loop back to print the next character (this BNE is
                        ; effectively a JMP as we will reach a null terminator
                        ; well before Y wraps around to zero)

.stxt2

 RTS                    ; Return from the subroutine