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-rw-r--r--bigint48.s6
1 files changed, 4 insertions, 2 deletions
diff --git a/bigint48.s b/bigint48.s
index 1971af2..d8fdb2b 100644
--- a/bigint48.s
+++ b/bigint48.s
@@ -3,8 +3,10 @@
; the Atari 800/XL/XE build doesn't use this, it's only for
; the 5200 (though the A8 build can be tested with it).
-; .include "atari.inc" ; don't include atari.inc on the 5200, I'll get confused.
- FR0 = $d4 ; this is the only label we need from atari.inc
+; .include "atari.inc" ; don't include atari.inc on the 5200,
+ ; I'll get confused even if ca65 doesn't.
+ FR0 = $d4 ; this is the only label we need from atari.inc. on
+ ; the 5200, $d4 and up are free zero page.
.export _big_copy, _ulong_to_big, _big_cmp, _big_to_ulong, _big_add, _big_sub, _big_negate
.export _big_div, _big_mul