Don't preserve return stack pointer between interpreted words

This isn't done by the expanded interpreter either, and not doing it lets me save 4 bytes.
meithecatte · Mar 6, 2023 · f9533fc · f9533fc
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commit f9533fc
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diff --git a/README.md b/README.md
@@ -153,8 +153,8 @@ Git or GitHub's web interface. This disparity is handled by two Python scripts:
 
 ## Free bytes
 
-At this moment, not counting the `55 AA` signature at the end, **496** bytes are used,
-leaving 14 bytes for any potential improvements.
+At this moment, not counting the `55 AA` signature at the end, **492** bytes are used,
+leaving 18 bytes for any potential improvements.
 
 Byte saving leaderboard:
  - Ilya Kurdyukov saved 24 bytes. Thanks!

diff --git a/boot.s b/boot.s
@@ -174,15 +174,13 @@ STATE equ $+1
 
     ; Execute the word
 .execute:
-RetSP equ $+1
     mov di, RS0
     pop bx
     mov si, .return
     jmp ax
 .return:
     dw .executed
 .executed:
-    mov [RetSP], di
     push bx
     jmp short InterpreterLoop