diff --git a/MCUME_pico/bin/PICOMPUTER/.DS_Store b/MCUME_pico/bin/PICOMPUTER/.DS_Store
deleted file mode 100644
index 5008ddf..0000000
Binary files a/MCUME_pico/bin/PICOMPUTER/.DS_Store and /dev/null differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_pico64.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_pico64.uf2
index f7c143b..a5ef68c 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_pico64.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_pico64.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_pico800.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_pico800.uf2
index 1344231..f096956 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_pico800.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_pico800.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_pico81.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_pico81.uf2
index e20ca47..0c73eaf 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_pico81.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_pico81.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_picocolem.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_picocolem.uf2
index 5a2c50b..9d6ca6b 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_picocolem.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_picocolem.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_picoo2em.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_picoo2em.uf2
index f2f2dcf..1503cfd 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_picoo2em.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_picoo2em.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_picospeccy.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_picospeccy.uf2
index 4e730db..1decbca 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_picospeccy.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_picospeccy.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTER/mcume_picovcs.uf2 b/MCUME_pico/bin/PICOMPUTER/mcume_picovcs.uf2
index fd46e65..ba43b50 100644
Binary files a/MCUME_pico/bin/PICOMPUTER/mcume_picovcs.uf2 and b/MCUME_pico/bin/PICOMPUTER/mcume_picovcs.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico64.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico64.uf2
new file mode 100644
index 0000000..070fd0f
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico64.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico800.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico800.uf2
new file mode 100644
index 0000000..762236a
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico800.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico81.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico81.uf2
new file mode 100644
index 0000000..30854ea
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_pico81.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_picocolem.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picocolem.uf2
new file mode 100644
index 0000000..62f1ab7
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picocolem.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_picoo2em.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picoo2em.uf2
new file mode 100644
index 0000000..f238821
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picoo2em.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_picospeccy.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picospeccy.uf2
new file mode 100644
index 0000000..f029e3a
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picospeccy.uf2 differ
diff --git a/MCUME_pico/bin/PICOMPUTERMAX/mcume_picovcs.uf2 b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picovcs.uf2
new file mode 100644
index 0000000..2bc2b3b
Binary files /dev/null and b/MCUME_pico/bin/PICOMPUTERMAX/mcume_picovcs.uf2 differ
diff --git a/MCUME_pico/config/iopins.h b/MCUME_pico/config/iopins.h
index 1898fdc..d25067e 100644
--- a/MCUME_pico/config/iopins.h
+++ b/MCUME_pico/config/iopins.h
@@ -26,6 +26,7 @@
 #define TFT_DC          28
 #define TFT_CS          13  // 255 for LORES ST7789 (NO CS)
 #define TFT_RST         255 // 255 for ILI/ST if connected to 3.3V
+#define TFT_BACKLIGHT   255 // hardwired to 3.3v
 
 // SD (see SPI0 in code!!!)
 #define SD_SPIREG       spi0
@@ -67,9 +68,15 @@
 #define TFT_SCLK        18
 #define TFT_MOSI        19
 #define TFT_MISO        255 // Not required, used for DC... 
-#define TFT_DC          16  //28
-#define TFT_CS          255 //17  // 255 for LORES ST7789 (NO CS)
-#define TFT_RST         21 //255  // 255 for ILI/ST if connected to 3.3V, required by 256x256 ST
+#define TFT_DC          16
+#define TFT_RST         21
+#ifdef PICOMPUTERMAX
+#define TFT_CS          17
+#define TFT_BACKLIGHT   20
+#else
+#define TFT_CS          255
+#define TFT_BACKLIGHT   255
+#endif
 
 // SD (see SPI0 in code!!!)
 #define SD_SPIREG       spi1
diff --git a/MCUME_pico/config/platform_config.h b/MCUME_pico/config/platform_config.h
index 989a0f2..672fc09 100644
--- a/MCUME_pico/config/platform_config.h
+++ b/MCUME_pico/config/platform_config.h
@@ -7,10 +7,10 @@
 
 
 //#define PICOMPUTER     1
-#define MCUME_REV1      1
+#define PICOMPUTERMAX  1
+//#define MCUME_REV1      1
 //#define MCUME_REV2      1
 
-
 #ifdef PICOMPUTER
 #define ST7789         1
 #define LOHRES         1
@@ -19,6 +19,16 @@
 #define HAS_SND        1
 #endif
 
+#ifdef PICOMPUTERMAX
+#undef LOHRES
+#undef FLIP_SCREEN
+#define ST7789         1
+#define ST7789_POL     1
+#define INVX           1
+#define HAS_SND        1
+#define PICOMPUTER     1
+#endif
+
 #ifdef MCUME_REV1
 #define USE_VGA        1
 #define INVX           1
@@ -26,8 +36,8 @@
 #endif
 
 #ifdef MCUME_REV2
-#define USE_VGA        1
-//#define ILI9341        1
+//#define USE_VGA        1
+#define ILI9341        1
 #define INVX           1
 #define HAS_SND        1
 #endif
diff --git a/MCUME_pico/pico5200/emuapi.cpp b/MCUME_pico/pico5200/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/pico5200/emuapi.cpp
+++ b/MCUME_pico/pico5200/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/pico64/emuapi.cpp b/MCUME_pico/pico64/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/pico64/emuapi.cpp
+++ b/MCUME_pico/pico64/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/pico800/emuapi.cpp b/MCUME_pico/pico800/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/pico800/emuapi.cpp
+++ b/MCUME_pico/pico800/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/pico81/emuapi.cpp b/MCUME_pico/pico81/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/pico81/emuapi.cpp
+++ b/MCUME_pico/pico81/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/pico81/emuapi.h b/MCUME_pico/pico81/emuapi.h
index d4ba868..6c45e5c 100644
--- a/MCUME_pico/pico81/emuapi.h
+++ b/MCUME_pico/pico81/emuapi.h
@@ -38,16 +38,17 @@ const unsigned short key_map1[] = {
 */
 
 const unsigned short key_map1[] = {
-  20,26,8,21,23,28,25,12,18,19,0,
-  0, 4, 9, 7,22, 4,11,13,14,15,40,
-  0,6,27,29,224,5,17,16,225,44, 
-  0,0,0,0
+  20,26,8,21,23, 28,25,12,18, 19,0x100+39,
+  0x100+30, 4, 9,7, 22, 10,11,13,14, 15,40,
+  0, 6,27,29,224,5, 17,16,225,44, 
+  0x100+36,0x100+34,0x100+37,0x100+35
   };  
 
 const unsigned short key_map2[] = {
-  30,31,32,33,34,35,36,37,38,39,0,
-  0,0,0,0,0,0,0,0,0,0,0,
-  0, 0,0,0,0,0,0,0,0,0,
+  30,31,32,33,34,35,36,37,38,39,0x100+19,
+//  0x100+20, 0x100+26,0x100+8, 0x100+21, 0x100+23,0x100+28,0x100+25,0x100+12, 0x100+18,0x100+19,0,
+  0x100+31, 0x100+4 ,0x100+9, 0x100+7,  0x100+22,0x100+10,0x100+11,0x100+13, 0x100+14,0x100+15,0x100+40,
+  0,0,0,0,0,0x100+5, 0x100+17,0x100+16,0x100+225,0x100+44, 
   0,0,0,0
   };  
 
diff --git a/MCUME_pico/pico81/pico81.cpp b/MCUME_pico/pico81/pico81.cpp
index e971618..643dfd3 100644
--- a/MCUME_pico/pico81/pico81.cpp
+++ b/MCUME_pico/pico81/pico81.cpp
@@ -21,7 +21,17 @@ TFT_T_DMA tft;
 
 static int skip=0;
 
+#include "hardware/clocks.h"
+#include "hardware/vreg.h"
+
 int main(void) {
+    vreg_set_voltage(VREG_VOLTAGE_1_05);
+    set_sys_clock_khz(125000, true);    
+//    set_sys_clock_khz(150000, true);    
+//    set_sys_clock_khz(133000, true);    
+//    set_sys_clock_khz(200000, true);    
+//    set_sys_clock_khz(225000, true);    
+//    set_sys_clock_khz(250000, true);    
     stdio_init_all();
 #ifdef USE_VGA    
     tft.begin(VGA_MODE_320x240);
diff --git a/MCUME_pico/pico81/zx81.c b/MCUME_pico/pico81/zx81.c
index 7f8d92c..0d2d7a6 100644
--- a/MCUME_pico/pico81/zx81.c
+++ b/MCUME_pico/pico81/zx81.c
@@ -241,14 +241,16 @@ static void updateKeyboard (void)
   }
   else {
     // scan all possibilities
+    int key = hk & 0xff;
     for (int j=0;j<8;j++) {
       for(int i=0;i<5;i++){
-        if ( (k == map_qw[j][i]) || (hk == map_qw[j][i]) ) {
+        if ( (k == map_qw[j][i]) || (key == map_qw[j][i]) ) {
             keyboard[j] &= ~ (1<<(4-i));
             nb_keys++;
         }   
       }  
-    }    
+    }
+    if (hk & 0x100) keyboard[0] &= ~ 1;     
   } 
 }
 
diff --git a/MCUME_pico/picocolem/emuapi.cpp b/MCUME_pico/picocolem/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/picocolem/emuapi.cpp
+++ b/MCUME_pico/picocolem/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/piconofrendo/emuapi.cpp b/MCUME_pico/piconofrendo/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/piconofrendo/emuapi.cpp
+++ b/MCUME_pico/piconofrendo/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/picoo2em/emuapi.cpp b/MCUME_pico/picoo2em/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/picoo2em/emuapi.cpp
+++ b/MCUME_pico/picoo2em/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/picosnd/emuapi.cpp b/MCUME_pico/picosnd/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/picosnd/emuapi.cpp
+++ b/MCUME_pico/picosnd/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/picospeccy/emuapi.cpp b/MCUME_pico/picospeccy/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/picospeccy/emuapi.cpp
+++ b/MCUME_pico/picospeccy/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/picovcs/emuapi.cpp b/MCUME_pico/picovcs/emuapi.cpp
index a9122c4..fa57abe 100644
--- a/MCUME_pico/picovcs/emuapi.cpp
+++ b/MCUME_pico/picovcs/emuapi.cpp
@@ -296,6 +296,20 @@ int emu_ReadKeys(void)
 //    gpio_set_dir(cols[i], GPIO_IN);
 
     keymatrix[i]=row;
+    //if (row) keymatrix_hitrow=i;
+  }
+
+#ifdef PICOMPUTERMAX
+  // Swap ALT and DEL  
+  unsigned char alt = keymatrix[0] & 0x02;
+  unsigned char del = keymatrix[5] & 0x20;
+  keymatrix[0] &= ~0x02;
+  keymatrix[5] &= ~0x20;
+  if (alt) keymatrix[5] |= 0x20;
+  if (del) keymatrix[0] |= 0x02;
+#endif
+  for (int i=0;i<6;i++){
+    row = keymatrix[i];
     if (row) keymatrix_hitrow=i;
   }
 
@@ -820,7 +834,6 @@ void emu_init(void)
 {
   sd_init_driver(); 
   FRESULT fr = f_mount(&fatfs, "0:", 1);    
-  //emu_FileSystemInit();
 
   strcpy(romspath,ROMSDIR);
   nbFiles = readNbFiles(romspath); 
@@ -835,6 +848,10 @@ void emu_init(void)
   joySwapped = false;   
 #endif  
 
+  // Flip screen if UP pressed
+  if (emu_ReadKeys() & MASK_JOY2_UP)
+    tft.flipscreen(true);
+
   toggleMenu(true);
 }
 
diff --git a/MCUME_pico/tft_t/tft_t_dma.cpp b/MCUME_pico/tft_t/tft_t_dma.cpp
index 90b033c..94198b5 100644
--- a/MCUME_pico/tft_t/tft_t_dma.cpp
+++ b/MCUME_pico/tft_t/tft_t_dma.cpp
@@ -15,8 +15,12 @@
 
 #define SPICLOCK 60000000 
 #ifdef ST7789
+#ifdef ST7789_POL
+#define SPI_MODE SPI_CPOL_0
+#else
 #define SPI_MODE SPI_CPOL_1
 #endif
+#endif
 #ifdef ILI9341
 #define SPI_MODE SPI_CPOL_0
 #endif
@@ -215,12 +219,18 @@ TFT_T_DMA::TFT_T_DMA()
   _mosi = TFT_MOSI;
   _sclk = TFT_SCLK;
   //_miso = TFT_MISO;
+  _bkl = TFT_BACKLIGHT;
   gpio_init(_dc);
   gpio_set_dir(_dc, GPIO_OUT); 
   gpio_init(_cs);
   gpio_set_dir(_cs, GPIO_OUT);
   digitalWrite(_cs, 1);
   digitalWrite(_dc, 1);
+  if (_bkl != 0xff) {
+    gpio_init(_bkl);
+    gpio_set_dir(_bkl, GPIO_OUT); 
+    digitalWrite(_bkl, 1);
+  } 
 }
 
 
@@ -282,7 +292,6 @@ void TFT_T_DMA::begin(void) {
     sleep_ms(200);
   }
 
-
   const uint8_t *addr = init_commands;
   digitalWrite(_cs, 0);
 #ifdef ILI9341 
@@ -313,7 +322,7 @@ void TFT_T_DMA::begin(void) {
   digitalWrite(_dc, 1);
   digitalWrite(_cs, 1);
 #endif
-#ifdef ST7789 
+#ifdef ST7789
   uint8_t  numCommands, numArgs;
   uint16_t ms;
   numCommands = *addr++;    // Number of commands to follow
@@ -357,7 +366,7 @@ void TFT_T_DMA::begin(void) {
 #ifdef ST7789 
   if (TFT_REALWIDTH != TFT_REALHEIGHT)
   {
-    flipscreen(true);      
+    //flipscreen(true);      
   }
 #endif 
 };
diff --git a/MCUME_pico/tft_t/tft_t_dma.h b/MCUME_pico/tft_t/tft_t_dma.h
index 9a69d3e..b7fcd9f 100644
--- a/MCUME_pico/tft_t/tft_t_dma.h
+++ b/MCUME_pico/tft_t/tft_t_dma.h
@@ -209,7 +209,7 @@ class TFT_T_DMA
 
   protected:   
   uint8_t _rst, _cs, _dc;
-  uint8_t _miso, _mosi, _sclk;
+  uint8_t _miso, _mosi, _sclk, _bkl;
   bool flipped=false;
 
   void wait(void);