diff --git a/asminc/cbm_kernal.inc b/asminc/cbm_kernal.inc
index 981687206..5f41c6267 100644
--- a/asminc/cbm_kernal.inc
+++ b/asminc/cbm_kernal.inc
@@ -46,6 +46,7 @@
   GRAPH_SET_FONT                := $FF3B
   GRAPH_GET_CHAR_SIZE           := $FF3E
   GRAPH_PUT_CHAR                := $FF41
+  MULTI_ACPTR                   := $FF44
   RESTORE_BASIC                 := $FF47
   CLOCK_SET_DATE_TIME           := $FF4D
   CLOCK_GET_DATE_TIME           := $FF50
diff --git a/asminc/cx16.inc b/asminc/cx16.inc
index 8891c1761..4d9ce89db 100644
--- a/asminc/cx16.inc
+++ b/asminc/cx16.inc
@@ -1,5 +1,5 @@
 ;
-; CX16 r37 definitions
+; CX16 r38 definitions
 ;
 
 ; ---------------------------------------------------------------------------
@@ -439,7 +439,7 @@ NMIVec          := $0318
   .scope        PSG             ; Programmable Sound Generator
     .struct
     PITCH       .word
-    VOL         .byte           ; Left, right channels; volume
+    VOL         .byte           ; Right, left sides; volume
     WAVEFORM    .byte           ; Wave shape, pulse width
     .endstruct
     LEFT        =       %01 << 6
@@ -544,9 +544,11 @@ NMIVec          := $0318
   VERALOG       .byte           ; Boolean: log VERA activity
   KEYBOARDLOG   .byte           ; Boolean: log keyboard data
   ECHO          .byte           ; Type of echo that's enabled
-  SAVEXIT       .byte           ; Boolean: save on exit
+  SAVEXIT       .byte           ; Boolean: save machine state on exit
   GIFREC        .byte           ; Method of recording GIF movie
-                .org    $9FBD
+                .res    2
+  CYCLECOUNT    .dword          ; Running count of CPU cycles (Read-Only)
+                .res    1
   KEYMAP        .byte           ; Current keyboard layout number (Read-Only)
   DETECT        .byte   2       ; If is "16" string, then running on emulator (RO)
 .endstruct
diff --git a/include/cx16.h b/include/cx16.h
index 87a6d37ca..f3d02bd28 100644
--- a/include/cx16.h
+++ b/include/cx16.h
@@ -3,7 +3,7 @@
 /*                                  cx16.h                                   */
 /*                                                                           */
 /*                      CX16 system-specific definitions                     */
-/*                             For prerelease 37                             */
+/*                             For prerelease 38                             */
 /*                                                                           */
 /*                                                                           */
 /* This software is provided "as-is", without any expressed or implied       */
@@ -283,12 +283,14 @@ struct __emul {
     unsigned char       debug;          /* Boolean: debugging enabled */
     unsigned char       vera_action;    /* Boolean: displaying VERA activity */
     unsigned char       keyboard;       /* Boolean: displaying typed keys */
-    unsigned char       echo;           /* How Kernal output should be echoed to host */
-    unsigned char       save_on_exit;   /* Boolean: save SD card when quitting */
+    unsigned char       echo;           /* How to send Kernal output to host */
+    unsigned char       save_on_exit;   /* Boolean: save machine state on exit */
     unsigned char       gif_method;     /* How GIF movie is being recorded */
-    unsigned char       unused[0xD - 0x6];
-    unsigned char       keymap;         /* Keyboard layout number */
-       const char       detect[2];      /* "16" if running on x16emu */
+    unsigned char const unused1[2];
+    unsigned long const cycle_count;    /* Running total of CPU cycles (8 MHz.) */
+    unsigned char const unused2[1];
+    unsigned char const keymap;         /* Keyboard layout number */
+             char const detect[2];      /* "16" if running on x16emu */
 };
 #define EMULATOR        (*(volatile struct __emul *)0x9FB0)
 
diff --git a/libsrc/cx16/cputc.s b/libsrc/cx16/cputc.s
index 034c3e389..4a7034e59 100644
--- a/libsrc/cx16/cputc.s
+++ b/libsrc/cx16/cputc.s
@@ -1,5 +1,5 @@
 ;
-; 2019-09-23, Greg King
+; 2020-10-13, Greg King
 ;
 ; void __fastcall__ cputcxy (unsigned char x, unsigned char y, char c);
 ; void __fastcall__ cputc (char c);
@@ -11,52 +11,47 @@
         .import         gotoxy, PLOT
 
         .include        "cx16.inc"
-        .macpack        generic
 
 
-; First, move to a new position.
+; Move to a cursor position, then print a character.
 
 _cputcxy:
         pha                     ; Save C
         jsr     gotoxy          ; Set cursor, drop x and y
-        pla                     ; Restore C
+        pla
 
-; Print a character.
+; Print a character -- also used as an internal function.
 
-_cputc: cmp     #$0D            ; LF?
+_cputc: cmp     #$0D            ; X16 '\n'?
         beq     newline
-        cmp     #$0A            ; CR?
-        beq     plotx0
+        cmp     #$0A            ; X16 '\r'?
+        beq     cr
 
-; Printable char of some sort
+; Printable char. of some sort.
+; Convert it from PetSCII into a screen-code.
 
-        cmp     #' '
-        blt     cputdirect      ; Other control char
+convert:
         tay
-        bmi     L10
-        cmp     #$60
-        blt     L2
-        and     #<~%00100000
-        bra     cputdirect
-
-; Handle character if high bit set
-
-L10:    and     #<~%10000000    ; Remove high bit
-        ora     #%01000000
-        bra     cputdirect
-
-L2:     and     #<~%01000000
+        lsr     a               ; Divide by 256/8
+        lsr     a
+        lsr     a
+        lsr     a
+        lsr     a
+        tax                     ; .X = %00000xxx
+        tya
+        eor     pet_to_screen,x
 
 cputdirect:
         jsr     putchar         ; Write character to screen, return .Y
 
-; Advance cursor position.
+; Advance the cursor position.
 
         iny
         cpy     LLEN            ; Reached end of line?
         bne     L3
-        jsr     newline         ; Next line
-        ldy     #$00            ; + CR
+        jsr     newline         ; Wrap around
+
+cr:     ldy     #$00
 L3:     sty     CURS_X
         rts
 
@@ -70,7 +65,6 @@ newline:
 
 ; Set the cursor's position, calculate RAM pointer.
 
-plotx0: stz     CURS_X
 plot:   ldy     CURS_X
         ldx     CURS_Y
         clc
@@ -96,3 +90,9 @@ putchar:
         lda     CHARCOLOR
         sta     VERA::DATA0
         rts
+
+
+        .rodata
+pet_to_screen:
+        .byte %10000000,%00000000,%01000000,%00100000  ; PetSCII -> screen-code
+        .byte %01000000,%11000000,%10000000,%10000000