usermem-std-thunked: add a comment

diff --git a/Kernel/usermem_std-z80-thunked.s b/Kernel/usermem_std-z80-thunked.s
index 01ed9aa..1d09734 100644 (file)
--- a/Kernel/usermem_std-z80-thunked.s
+++ b/Kernel/usermem_std-z80-thunked.s
@@ -82,7 +82,7 @@ split_map:
        ; We need to adjust DE and BC here. The start doesn't matter we know
        ; the split start with always be 0x8000
        ex de,hl
-       pop de
+       pop de          ; length done so far
        add hl,de
        ex de,hl        ; DE is now the second block target, HL is the bytes
                        ; done now fix up BC