Merge pull request #2919 from polluks/c16

Combine C16 and Plus/4 source

libsrc/c16/kbhit.s

@@ -1,26 +1 @@
-;
-; Ullrich von Bassewitz, 06.08.1998
-;
-; unsigned char kbhit (void);
-;
-
-        .export         _kbhit
-
-        .include        "plus4.inc"
-
-
-.proc   _kbhit
-
-        ldx     #0              ; High byte of return is always zero
-        lda     KEY_COUNT       ; Get number of characters
-        ora     FKEY_COUNT      ; Or with number of chars from function keys
-        beq     L9
-        lda     #1
-L9:     rts
-
-.endproc
-
-
-
-
-
+.include "../plus4/kbhit.s"

libsrc/c16/randomize.s

@@ -1,18 +1 @@
-;
-; 2002-11-05, Ullrich von Bassewitz
-; 2015-09-11, Greg King
-;
-; void __randomize (void);
-; /* Initialize the random number generator */
-;
-
-        .export         ___randomize
-        .import         _srand
-
-        .include        "plus4.inc"
-
-___randomize:
-        ldx     TED_VLINELO     ; Use TED rasterline as high byte
-        lda     TIME+2          ; Use 60HZ clock as low byte
-        jmp     _srand          ; Initialize generator
-
+.include "../plus4/randomize.s"