Always enable volume control.

MiSTer.ini

@@ -6,7 +6,6 @@ composite_sync=0       ; set to 1 for composite sync on HSync signal of VGA outp
 vga_scaler=0           ; set to 1 to connect VGA to scaler output.
 hdmi_audio_96k=0       ; set to 1 for 96khz/16bit HDMI audio (48khz/16bit otherwise)
 keyrah_mode=0x18d80002 ; VIDPID of keyrah for special code translation (0x23418037 for Arduino Micro)
-volumectl=0            ; enable audio volume control by multimedia keys
 vscale_mode=0          ; 0 - scale to fit the screen height.
                        ; 1 - use integer scale only.
                        ; 2 - use 0.5 steps of scale.

cfg.cpp

@@ -49,7 +49,6 @@ static const ini_var_t ini_vars[] =
 	{ "KBD_NOMOUSE", (void*)(&(cfg.kbd_nomouse)), UINT8, 0, 1 },
 	{ "MOUSE_THROTTLE", (void*)(&(cfg.mouse_throttle)), UINT8, 1, 100 },
 	{ "BOOTSCREEN", (void*)(&(cfg.bootscreen)), UINT8, 0, 1 },
-	{ "VOLUMECTL", (void*)(&(cfg.volumectl)), UINT8, 0, 1 },
 	{ "VSCALE_MODE", (void*)(&(cfg.vscale_mode)), UINT8, 0, 3 },
 	{ "VSCALE_BORDER", (void*)(&(cfg.vscale_border)), UINT16, 0, 399 },
 	{ "RBF_HIDE_DATECODE", (void*)(&(cfg.rbf_hide_datecode)), UINT8, 0, 1 },

cfg.h

@@ -29,7 +29,6 @@ typedef struct {
 	uint8_t kbd_nomouse;
 	uint8_t mouse_throttle;
 	uint8_t bootscreen;
-	uint8_t volumectl;
 	uint8_t vscale_mode;
 	uint16_t vscale_border;
 	uint8_t rbf_hide_datecode;

menu.cpp

@@ -2327,7 +2327,7 @@ void HandleUI(void)
 			memset(bar, 0x7f, 8 - m);
 		}
 
-		OsdWrite(13, s, menusub == 0, !cfg.volumectl);
+		OsdWrite(13, s, menusub == 0);
 		OsdWrite(15, STD_EXIT, menusub == 1, 0, OSD_ARROW_RIGHT);
 		break;
 

user_io.cpp

@@ -728,7 +728,6 @@ void user_io_init(const char *path, const char *xml)
 	if(strlen(cfg.font)) LoadFont(cfg.font);
 	FileLoadConfig("Volume.dat", &vol_att, 1);
 	vol_att &= 0x1F;
-	if (!cfg.volumectl) vol_att = 0;
 	spi_uio_cmd8(UIO_AUDVOL, vol_att);
 	user_io_send_buttons(1);
 
@@ -3066,8 +3065,6 @@ int get_volume()
 
 void set_volume(int cmd)
 {
-	if (!cfg.volumectl) return;
-
 	vol_set_timeout = GetTimer(1000);
 
 	vol_att &= 0x17;