diff --git a/examples/Delay/AnalogDelayDemo/AnalogDelayDemo.ino b/examples/Delay/AnalogDelayDemo/AnalogDelayDemo.ino
index f339351..6127f2c 100644
--- a/examples/Delay/AnalogDelayDemo/AnalogDelayDemo.ino
+++ b/examples/Delay/AnalogDelayDemo/AnalogDelayDemo.ino
@@ -92,8 +92,9 @@ void setup() {
   //TGA_PRO_REVA(x);
 
   #ifdef USE_EXT
-  SPI_MEM0_4M();
-  //SPI_MEM0_1M(); // use this line instead of you have the older 1Mbit memory
+  SPI_MEM0_64M();   // Optional 64Mbit SPI RAM
+  //SPI_MEM0_4M();  // Older REVA and REVB boards came with 4M or 1M
+  //SPI_MEM0_1M();
   #endif
   
   delay(100);
diff --git a/examples/Delay/AnalogDelayDemoExpansion/AnalogDelayDemoExpansion.ino b/examples/Delay/AnalogDelayDemoExpansion/AnalogDelayDemoExpansion.ino
index e05f632..b12bb23 100644
--- a/examples/Delay/AnalogDelayDemoExpansion/AnalogDelayDemoExpansion.ino
+++ b/examples/Delay/AnalogDelayDemoExpansion/AnalogDelayDemoExpansion.ino
@@ -102,8 +102,9 @@ void setup() {
   //TGA_PRO_REVA(x);
   
   #ifdef USE_EXT
-    SPI_MEM0_4M();
-  //SPI_MEM0_1M(); // use this line instead of you have the older 1Mbit memory
+  SPI_MEM0_64M();   // Optional 64Mbit SPI RAM
+  //SPI_MEM0_4M();  // Older REVB and REVA boards offered 1M or 4M
+  //SPI_MEM0_1M(); 
   #endif
   
   delay(100); // wait a bit for serial to be available
diff --git a/examples/Delay/ExternalDelayDemo/ExternalDelayDemo.ino b/examples/Delay/ExternalDelayDemo/ExternalDelayDemo.ino
index 093fb78..9640ba6 100644
--- a/examples/Delay/ExternalDelayDemo/ExternalDelayDemo.ino
+++ b/examples/Delay/ExternalDelayDemo/ExternalDelayDemo.ino
@@ -53,8 +53,9 @@ void setup() {
   //TGA_PRO_REVB(x);
   //TGA_PRO_REVA(x);
 
-  SPI_MEM0_4M();
-  //SPI_MEM0_1M(); // use this line instead of you have the older 1Mbit memory
+  SPI_MEM0_64M();   // Optional 64Mbit SPI RAM
+  //SPI_MEM0_4M();  // Older REVB / REVA boards came with 4M or 1M
+  //SPI_MEM0_1M();
 
   Serial.begin(57600);
   delay(200);
diff --git a/examples/Delay/SoundOnSoundDemo/SoundOnSoundDemo.ino b/examples/Delay/SoundOnSoundDemo/SoundOnSoundDemo.ino
index 1251fdd..c025600 100644
--- a/examples/Delay/SoundOnSoundDemo/SoundOnSoundDemo.ino
+++ b/examples/Delay/SoundOnSoundDemo/SoundOnSoundDemo.ino
@@ -100,8 +100,9 @@ void setup() {
   //TGA_PRO_REVB(x);
   //TGA_PRO_REVA(x);
 
-  SPI_MEM0_4M();
-  //SPI_MEM0_1M(); // use this line instead of you have the older 1Mbit memory
+  SPI_MEM0_64M();  // Optional 64Mbit SPI RAM
+  //SPI_MEM0_4M();  // Older REVB / REVA boards offered 1M or 4M
+  //SPI_MEM0_1M();
 
   delay(100);
   Serial.begin(57600); // Start the serial port
diff --git a/examples/Delay/SoundOnSoundExpansionDemo/SoundOnSoundExpansionDemo.ino b/examples/Delay/SoundOnSoundExpansionDemo/SoundOnSoundExpansionDemo.ino
index 3ae018f..0cc2dcd 100644
--- a/examples/Delay/SoundOnSoundExpansionDemo/SoundOnSoundExpansionDemo.ino
+++ b/examples/Delay/SoundOnSoundExpansionDemo/SoundOnSoundExpansionDemo.ino
@@ -110,8 +110,9 @@ void setup() {
   //TGA_PRO_REVB(x);
   //TGA_PRO_REVA(x);
 
-  SPI_MEM0_4M();
-  //SPI_MEM0_1M(); // use this line instead of you have the older 1Mbit memory
+  SPI_MEM0_64M();  // Optional 64Mbit SPI RAM
+  //SPI_MEM0_4M();  // Older REVB / REVA boards offered 1M or 4M
+  //SPI_MEM0_1M();
 
   delay(100);
   delay(100); // wait a bit for serial to be available
diff --git a/examples/Tests/TGA_PRO_Basic_Test/TGA_PRO_Basic_Test.ino b/examples/Tests/TGA_PRO_Basic_Test/TGA_PRO_Basic_Test.ino
index 6282873..930ae28 100644
--- a/examples/Tests/TGA_PRO_Basic_Test/TGA_PRO_Basic_Test.ino
+++ b/examples/Tests/TGA_PRO_Basic_Test/TGA_PRO_Basic_Test.ino
@@ -113,8 +113,9 @@ void setup() {
 #endif
 
 #if defined(RUN_MEMO_TEST)
-  SPI_MEM0_4M(); // Declare the correct memory size
-  // SPI_MEM0_1M(); // older boards only had 1M memories 
+  SPI_MEM0_64M();   // declare the 64Mbit optional PSI memory
+  //SPI_MEM0_4M();  // REVB and REVA came with 4M or 1M
+  // SPI_MEM0_1M(); 
   spiMem0.begin(); delay(10);
   if (spiTest(&spiMem0, 0)) { Serial.println("SPI0 testing PASSED!");}
 #endif
diff --git a/keywords.txt b/keywords.txt
index 303d8a6..5194100 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -15,10 +15,11 @@ BAAudioEffectDelayExternal	KEYWORD1
 #######################################
 # Methods and Functions (KEYWORD2)
 #######################################
-
+TGA_PRO_MKII_REV1 KEYWORD2
 TGA_PRO_REVA	KEYWORD2
 TGA_PRO_REVB    KEYWORD2
 TGA_PRO_EXPAND_REV2    KEYWORD2
+SPI_MEM0_64M   KEYWORD2
 SPI_MEM0_1M    KEYWORD2
 SPI_MEM0_4M    KEYWORD2
 SPI_MEM1_1M    KEYWORD2
@@ -31,4 +32,4 @@ BAHardwareConfig KEYWORD1
 
 #######################################
 # Constants (LITERAL1)
-#######################################
\ No newline at end of file
+#######################################