Added c16/plus4 fast(), isfast() and slow() functions, and updated the documentation accordingly.

2026-04-23 23:17:45 +00:00 · 2018-03-23 14:27:15 -07:00
parent d869368679
commit 03ba3f7473
9 changed files with 148 additions and 27 deletions
@@ -0,0 +1,22 @@
+;
+; Marco van den Heuvel, 2018-03-20
+;
+; unsigned char isfast (void);
+; /* Returns 1 if the CPU is in double clock mode. */
+;
+
+        .export         _isfast
+
+        .include        "plus4.inc"
+
+
+.proc   _isfast
+
+        lda     TED_CLK
+        lsr
+        and     #$01
+        ldx     #$00
+        rts
+
+.endproc
+