Version analysis of TT67 - Elite on the 6502

This code appears in the following versions (click to see it in the source code):

Cassette, Disc (flight), Disc (docked), 6502 Second Processor, Master and Electron

Code variations between these versions are shown below.

       Name: TT67
       Type: Subroutine
   Category: Text
    Summary: Print a newline


.TT67

Code variation 1 of 2Related to Elite's use of the Tube

This variation is blank in the Cassette, Disc (flight), Disc (docked) and Electron versions.

Tap on a block to expand it, and tap it again to revert.

Master
6502SP
\INC YC                 \ This instruction is commented out in the original
                        \ source
 INC YC                 \ Move the text cursor counter in YC down a line

Code variation 2 of 2Related to a standard feature

The cassette and Electron versions uses control code 13 for printing newlines, while the other versions use control code 12.

Tap on a block to expand it, and tap it again to revert.

Cassette, Electron
Flight, Docked, 6502SP, Master
 LDA #13                \ Load a newline character into A
 LDA #12                \ Load a newline character into A

 JMP TT27               \ Print the text token in A and return from the
                        \ subroutine using a tail call