diff -Naur sidplay-libs-2.1.1-old/libsidplay/include/sidplay/sidplay2.h sidplay-libs-2.1.1/libsidplay/include/sidplay/sidplay2.h

--- sidplay-libs-2.1.1-old/libsidplay/include/sidplay/sidplay2.h	2004-06-14 22:08:04.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/include/sidplay/sidplay2.h	2008-11-23 19:13:58.000000000 +0100

@@ -50,6 +50,7 @@

     sid2_player_t  state        (void) const;

     void           stop         (void);

     void           debug        (bool enable, FILE *out);

+    int            cia1_last_ta (void) const;

     // Timer functions with respect to resolution returned by timebase

     uint_least32_t timebase (void) const;

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.cpp sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.cpp

--- sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.cpp	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.cpp	2008-11-30 15:26:45.000000000 +0100

@@ -172,6 +172,7 @@

 {

     ta  = ta_latch = 0xffff;

     tb  = tb_latch = 0xffff;

+    last_ta = 0;

     ta_underflow = tb_underflow = false;

     cra = crb = sdr_out = 0;

     sdr_count = 0;

@@ -320,9 +321,19 @@

     case PRB: case DDRB:

         portB ();

         break;

-    case TAL: endian_16lo8 (ta_latch, data); break;

+    case TAL: 

+        endian_16lo8 (ta_latch, data);

+        // store last timer A value to calculate song speed

+        if (ta_latch != 0) {

+          last_ta = ta_latch;

+        }

+    break;

     case TAH:

         endian_16hi8 (ta_latch, data);

+        // store last timer A value to calculate song speed

+        if (ta_latch != 0) {

+          last_ta = ta_latch;

+        }

         if (!(cra & 0x01)) // Reload timer if stopped

             ta = ta_latch;

     break;

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.h sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.h

--- sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.h	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.h	2008-11-22 19:33:06.000000000 +0100

@@ -92,6 +92,10 @@

 private:

     static const char *credit;

+public:

+    // The last timer A value to calculate song speed.

+    int last_ta;

+

 protected:

     uint8_t regs[0x10];

     bool    cnt_high;

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/player.h sidplay-libs-2.1.1/libsidplay/src/player.h

--- sidplay-libs-2.1.1-old/libsidplay/src/player.h	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/player.h	2008-11-30 16:02:04.000000000 +0100

@@ -455,6 +455,9 @@

     void           debug        (bool enable, FILE *out)

                                 { cpu->debug (enable, out); }

     const char    *error        (void) const { return m_errorString; }

+    int           cia1_last_ta  (void) { if (m_info.environment == sid2_envR) return cia.last_ta;

+                                         else return sid6526.last_ta;

+                                       }

 };

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.cpp sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.cpp

--- sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.cpp	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.cpp	2008-11-30 16:04:37.000000000 +0100

@@ -80,6 +80,7 @@

 {

     locked = false;

     ta   = ta_latch = m_count;

+    last_ta = 0;

     cra  = 0;

     // Initialise random number generator

     if (seed)

@@ -131,9 +132,19 @@

     switch (addr)

     {

-    case 0x4: endian_16lo8 (ta_latch, data); break;

+    case 0x4: 

+        endian_16lo8 (ta_latch, data); 

+        // store last timer A value to calculate song speed

+        if (ta_latch != 0) {

+          last_ta = ta_latch;

+        }

+        break;

     case 0x5:

         endian_16hi8 (ta_latch, data);

+        // store last timer A value to calculate song speed

+        if (ta_latch != 0) {

+          last_ta = ta_latch;

+        }

         if (!(cra & 0x01)) // Reload timer if stopped

             ta = ta_latch;

     break;

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.h sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.h

--- sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.h	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.h	2008-11-30 16:05:38.000000000 +0100

@@ -43,6 +43,9 @@

 class SID6526: public component

 {

+public:

+    // The last timer A value to calculate song speed.

+    int last_ta;

 private:

     static const char * const credit;

diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sidplay2.cpp sidplay-libs-2.1.1/libsidplay/src/sidplay2.cpp

--- sidplay-libs-2.1.1-old/libsidplay/src/sidplay2.cpp	2004-06-14 22:08:02.000000000 +0200

+++ sidplay-libs-2.1.1/libsidplay/src/sidplay2.cpp	2008-11-23 19:23:56.000000000 +0100

@@ -146,3 +146,6 @@

 uint_least32_t sidplay2::timebase (void) const

 {   return SID2_TIME_BASE; }

+

+int sidplay2::cia1_last_ta(void) const 

+{  return sidplayer.cia1_last_ta (); }