diff --git a/elks/arch/i86/defconfig b/elks/arch/i86/defconfig
index 3923224cc..dc6932063 100644
--- a/elks/arch/i86/defconfig
+++ b/elks/arch/i86/defconfig
@@ -112,6 +112,7 @@ CONFIG_CONSOLE_DIRECT=y
 # CONFIG_CONSOLE_BIOS is not set
 # CONFIG_CONSOLE_HEADLESS is not set
 CONFIG_KEYBOARD_SCANCODE=y
+# CONFIG_CONSOLE_DUAL is not set
 # CONFIG_CONSOLE_SERIAL is not set
 CONFIG_EMUL_ANSI=y
 # CONFIG_KEYMAP_BE is not set
diff --git a/elks/arch/i86/drivers/char/config.in b/elks/arch/i86/drivers/char/config.in
index bcde5cb59..ba8e7d39e 100644
--- a/elks/arch/i86/drivers/char/config.in
+++ b/elks/arch/i86/drivers/char/config.in
@@ -12,7 +12,7 @@ mainmenu_option next_comment
 		 Headless       CONFIG_CONSOLE_HEADLESS"	Direct
 	if [ "$CONFIG_CONSOLE_DIRECT" = "y" ]; then
 		bool '  Scancode keyboard driver'	CONFIG_KEYBOARD_SCANCODE y
-		bool '  Dual-screen console support' CONFIG_CONSOLE_DUAL n
+		bool '  Dual-screen console support'    CONFIG_CONSOLE_DUAL n
 	fi
 	bool 'Serial Console'	CONFIG_CONSOLE_SERIAL		n
 	if [[ "$CONFIG_CONSOLE_DIRECT" = "y" || "$CONFIG_CONSOLE_BIOS" = "y" ]]; then
diff --git a/elks/arch/i86/drivers/char/conio-pc98-asm.h b/elks/arch/i86/drivers/char/conio-pc98-asm.h
index f130939ea..4b5208b63 100644
--- a/elks/arch/i86/drivers/char/conio-pc98-asm.h
+++ b/elks/arch/i86/drivers/char/conio-pc98-asm.h
@@ -1,7 +1,7 @@
 /* conio functions for PC-98 */
 
 /* put character on text vram */
-void early_putchar(int c);
+/*void early_putchar(int c);*/
 
 /* get character data from keyboard */
 int bios_getchar(void);
diff --git a/elks/arch/i86/drivers/char/conio-pc98.c b/elks/arch/i86/drivers/char/conio-pc98.c
index e09b40616..fdc65177d 100644
--- a/elks/arch/i86/drivers/char/conio-pc98.c
+++ b/elks/arch/i86/drivers/char/conio-pc98.c
@@ -3,7 +3,7 @@
  */
 
 #include <linuxmt/config.h>
-#include <linuxmt/types.h>
+#include <linuxmt/kernel.h>
 #include "conio-pc98-asm.h"
 
 void conio_init()
diff --git a/elks/arch/i86/drivers/char/console-bios.c b/elks/arch/i86/drivers/char/console-bios.c
index 03a9e6ff6..7509139bf 100644
--- a/elks/arch/i86/drivers/char/console-bios.c
+++ b/elks/arch/i86/drivers/char/console-bios.c
@@ -47,15 +47,14 @@ struct console;
 typedef struct console Console;
 
 struct console {
+    int Width, Height;
     int cx, cy;                 /* cursor position */
-    void (*fsm)(Console *, int);
     unsigned char display;
     unsigned char attr;         /* current attribute */
     unsigned char XN;           /* delayed newline on column 80 */
     unsigned char color;        /* fg/bg attr */
+    void (*fsm)(Console *, int);
     int pageno;                 /* video ram page # */
-    unsigned short Width;
-    unsigned short Height;
 #ifdef CONFIG_EMUL_ANSI
     int savex, savey;           /* saved cursor position */
     unsigned char *parmptr;     /* ptr to params */
@@ -90,9 +89,10 @@ static void PositionCursor(register Console * C)
     bios_setcursor (x, y, p);
 }
 
-static void PositionCursorGet (int * x, int * y)
+static void PositionCursorGet(int * x, int * y)
 {
         byte_t col, row;
+
         bios_getcursor (&col, &row);
         *x = col;
         *y = row;
@@ -174,10 +174,9 @@ struct tty_ops bioscon_ops = {
 
 void INITPROC console_init(void)
 {
-    Console *C;
+    Console *C = &Con[0];
     int i;
 
-    C = Con;
     C->Width = SETUP_VID_COLS;
     C->Height = SETUP_VID_LINES;
 
diff --git a/elks/arch/i86/drivers/char/console-direct-pc98.c b/elks/arch/i86/drivers/char/console-direct-pc98.c
index bd9f5fe45..2ef51c806 100644
--- a/elks/arch/i86/drivers/char/console-direct-pc98.c
+++ b/elks/arch/i86/drivers/char/console-direct-pc98.c
@@ -54,15 +54,15 @@ struct console;
 typedef struct console Console;
 
 struct console {
+    int Width, Height;
     int cx, cy;			/* cursor position */
-    void (*fsm)(Console *, int);
     unsigned char display;
+    unsigned char unused;
     unsigned char attr;		/* current attribute */
     unsigned char XN;		/* delayed newline on column 80 */
+    void (*fsm)(Console *, int);
     unsigned int vseg;		/* vram for this console page */
-    int vseg_offset;		/* vram offset of vseg for this console page */
-    unsigned short Width;
-    unsigned short Height;
+    unsigned int vseg_offset;	/* vram offset of vseg for this console page */
 #ifdef CONFIG_EMUL_ANSI
     int savex, savey;		/* saved cursor position */
     unsigned char *parmptr;	/* ptr to params */
@@ -95,7 +95,7 @@ static void SetDisplayPage(register Console * C)
 
 static void PositionCursor(register Console * C)
 {
-    int Pos;
+    unsigned int Pos;
 
     Pos = C->cx + C->Width * C->cy + C->vseg_offset;
     cursor_set(Pos * 2);
@@ -144,7 +144,7 @@ static void VideoWrite(register Console * C, int c)
 
 static void ClearRange(register Console * C, int x, int y, int xx, int yy)
 {
-    register __u16 *vp;
+    __u16 *vp;
     word_t attr;
 
     attr = (C->attr == A_DEFAULT) ? A98_DEFAULT : conv_pcattr(C->attr);
@@ -163,8 +163,8 @@ static void ClearRange(register Console * C, int x, int y, int xx, int yy)
 static void ScrollUp(register Console * C, int y)
 {
     __u16 *vp;
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
 
     vp = (__u16 *)((__u16)(y * C->Width) << 1);
     if ((unsigned int)y < MaxRow) {
@@ -178,8 +178,8 @@ static void ScrollUp(register Console * C, int y)
 static void ScrollDown(register Console * C, int y)
 {
     __u16 *vp;
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
     int yy = MaxRow;
 
     vp = (__u16 *)((__u16)(yy * C->Width) << 1);
@@ -221,7 +221,7 @@ struct tty_ops dircon_ops = {
 
 void INITPROC console_init(void)
 {
-    Console *C;
+    Console *C = &Con[0];
     int i;
     unsigned PageSizeW;
 
@@ -233,7 +233,6 @@ void INITPROC console_init(void)
 	AttributeSeg = 0xE200;
     }
 
-    C = Con;
     C->Width = 80;
     C->Height = 25;
 
diff --git a/elks/arch/i86/drivers/char/console-direct.c b/elks/arch/i86/drivers/char/console-direct.c
index 8b7459d46..31e467634 100644
--- a/elks/arch/i86/drivers/char/console-direct.c
+++ b/elks/arch/i86/drivers/char/console-direct.c
@@ -53,16 +53,15 @@ struct console;
 typedef struct console Console;
 
 struct console {
+    int Width, Height;
     int cx, cy;                 /* cursor position */
-    void (*fsm)(Console *, int);
     unsigned char display;
     unsigned char type;
     unsigned char attr;         /* current attribute */
     unsigned char XN;           /* delayed newline on column 80 */
+    void (*fsm)(Console *, int);
     unsigned int vseg;          /* vram for this console page */
-    int vseg_offset;            /* vram offset of vseg for this console page */
-    unsigned short Width;
-    unsigned short Height;
+    unsigned int vseg_offset;   /* vram offset of vseg for this console page */
     unsigned short crtc_base;   /* 6845 CRTC base I/O address */
 #ifdef CONFIG_EMUL_ANSI
     int savex, savey;           /* saved cursor position */
@@ -77,8 +76,8 @@ static Console *Visible[MAX_DISPLAYS];
 static Console Con[MAX_CONSOLES];
 static int NumConsoles;
 
+unsigned int VideoSeg = 0xb800;
 int Current_VCminor;
-unsigned VideoSeg;
 int kraw;
 
 #ifdef CONFIG_EMUL_ANSI
@@ -128,7 +127,7 @@ static void VideoWrite(register Console * C, int c)
 
 static void ClearRange(register Console * C, int x, int y, int x2, int y2)
 {
-    register int vp;
+    int vp;
 
     x2 = x2 - x + 1;
     vp = (x + y * C->Width) << 1;
@@ -143,9 +142,9 @@ static void ClearRange(register Console * C, int x, int y, int x2, int y2)
 
 static void ScrollUp(register Console * C, int y)
 {
-    register int vp;
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int vp;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
 
     vp = y * (C->Width << 1);
     if ((unsigned int)y < MaxRow)
@@ -157,7 +156,7 @@ static void ScrollUp(register Console * C, int y)
 #ifdef CONFIG_EMUL_ANSI
 static void ScrollDown(register Console * C, int y)
 {
-    register int vp;
+    int vp;
     int yy = C->Height - 1;
 
     vp = yy * (C->Width << 1);
@@ -202,24 +201,19 @@ struct tty_ops dircon_ops = {
 #ifndef CONFIG_CONSOLE_DUAL
 void INITPROC console_init(void)
 {
-    Console *C;
-    unsigned char output_type;
-    unsigned short boot_crtc;
+    Console *C = &Con[0];
     int i;
     int Width, Height;
     unsigned int PageSizeW;
-
-    output_type = OT_EGA;
-    C = &Con[0];
+    unsigned short boot_crtc;
+    unsigned char output_type = OT_EGA;
 
     Width = peekb(0x4a, 0x40);  /* BIOS data segment */
-
     /* Trust this. Cga does not support peeking at 0x40:0x84. */
     Height = 25;
     boot_crtc = peekw(0x63, 0x40);
     PageSizeW = ((unsigned int)peekw(0x4C, 0x40) >> 1);
 
-    VideoSeg = 0xb800;
     NumConsoles = MAX_CONSOLES - 1;
     if (peekb(0x49, 0x40) == 7) {
         VideoSeg = 0xB000;
@@ -264,22 +258,34 @@ void INITPROC console_init(void)
            kbd_name, Width, Height, NumConsoles);
 }
 #else
+
+#ifdef DEBUG
+static const char *type_string[] = {
+    "MDA",
+    "CGA",
+    "EGA",
+    "VGA",
+};
+#endif
+
 void INITPROC console_init(void)
 {
-    Console *C;
+    Console *C = &Con[0];
     int i, j, dev;
+    int screens = 0;
     unsigned short boot_crtc;
-    unsigned char boot_type;
-    unsigned char screens = 0;
     unsigned char cur_display = 0;
-    boot_crtc = peekw(0x63, 0x40);
-    for (i = 0; i < N_DEVICETYPES; ++i)
-        if (crtc_params[i].crtc_base == boot_crtc) boot_type = i;
+    unsigned char boot_type;
 
-    C = &Con[0];
+    boot_crtc = peekw(0x63, 0x40);
+    for (i = 0; i < N_DEVICETYPES; ++i) {
+        if (crtc_params[i].crtc_base == boot_crtc)
+            boot_type = i;
+    }
     for (i = 0; i < N_DEVICETYPES; ++i) {
         dev = (i + boot_type) % N_DEVICETYPES;
-        if (!crtc_probe(crtc_params[dev].crtc_base)) continue;
+        if (!crtc_probe(crtc_params[dev].crtc_base))
+            continue;
         screens++;
         crtc_init(dev);
         for (j = 0; j < crtc_params[dev].max_pages; ++j) {
@@ -312,9 +318,10 @@ void INITPROC console_init(void)
     VideoSeg = Visible[0]->vseg;
 
     kbd_init();
-    printk("Direct console %s kbd"TERM_TYPE"(%d screens, %i consoles)\n", kbd_name, screens, NumConsoles);
+    printk("Direct console %s kbd"TERM_TYPE"(%d screens, %d consoles)\n",
+        kbd_name, screens, NumConsoles);
     for (i = 0; i < NumConsoles; ++i) {
-        debug("/dev/tty%i, %s, %ux%u\n", i + 1, type_string[Con[i].type], Con[i].Width, Con[i].Height);
+        debug("/dev/tty%d, %s, %ux%u\n", i + 1, type_string[Con[i].type], Con[i].Width, Con[i].Height);
     }
 }
 #endif
diff --git a/elks/arch/i86/drivers/char/console.c b/elks/arch/i86/drivers/char/console.c
index cd20028c4..22b1e991d 100644
--- a/elks/arch/i86/drivers/char/console.c
+++ b/elks/arch/i86/drivers/char/console.c
@@ -23,7 +23,7 @@ void Console_conout(dev_t dev, int Ch)
 
 void Console_conin(unsigned char Key)
 {
-    register struct tty *ttyp = &ttys[Current_VCminor];
+    struct tty *ttyp = &ttys[Current_VCminor];
 
     if (!tty_intcheck(ttyp, Key))
         chq_addch(&ttyp->inq, Key);
@@ -32,9 +32,9 @@ void Console_conin(unsigned char Key)
 #ifdef CONFIG_EMUL_ANSI
 static void Console_gotoxy(register Console * C, int x, int y)
 {
-    register int xp = x;
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int xp = x;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
 
     C->cx = (xp >= MaxCol) ? MaxCol : (xp < 0) ? 0 : xp;
     xp = y;
@@ -82,8 +82,8 @@ static unsigned char ega_color[16] = {  0,  4,  2,  6,  1,  5,  3,  7,
 static void AnsiCmd(register Console * C, int c)
 {
     int n;
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
 
     /* ANSI param gathering and processing */
     if (C->parmptr < &C->params[MAXPARMS - 1])
@@ -254,8 +254,9 @@ static void esc_char(register Console * C, int c)
 /* Normal character processing */
 static void std_char(register Console * C, int c)
 {
-    unsigned short MaxRow = C->Height - 1;
-    unsigned short MaxCol = C->Width - 1;
+    int MaxRow = C->Height - 1;
+    int MaxCol = C->Width - 1;
+
     switch(c) {
     case BEL:
         bell();
@@ -319,7 +320,7 @@ static void std_char(register Console * C, int c)
 
 static int Console_ioctl(struct tty *tty, int cmd, char *arg)
 {
-    register Console *C = &Con[tty->minor];
+    Console *C = &Con[tty->minor];
 
     switch (cmd) {
     case DCGET_GRAPH:
@@ -367,7 +368,7 @@ static int Console_ioctl(struct tty *tty, int cmd, char *arg)
 
 static int Console_write(register struct tty *tty)
 {
-    register Console *C = &Con[tty->minor];
+    Console *C = &Con[tty->minor];
     int cnt = 0;
 
     while ((tty->outq.len > 0) && !glock) {
diff --git a/elks/arch/i86/drivers/char/crtc-6845.c b/elks/arch/i86/drivers/char/crtc-6845.c
index abdd0cfe1..c1b98f46e 100644
--- a/elks/arch/i86/drivers/char/crtc-6845.c
+++ b/elks/arch/i86/drivers/char/crtc-6845.c
@@ -21,31 +21,55 @@
 #define CRTC_CSEL 0x5
 #define CRTC_STAT 0x6
 
+struct hw_params crtc_params[N_DEVICETYPES] = {
+    { 80, 25, 0x3B4, 0xB000, 0x1000, 2000, 1, 16,   /* MDA */
+        {
+            0x61, 0x50, 0x52, 0x0F,
+            0x19, 0x06, 0x19, 0x19,
+            0x02, 0x0D, 0x0B, 0x0C,
+            0x00, 0x00, 0x00, 0x00,
+        }
+    },
+    { 80, 25, 0x3D4, 0xB800, 0x4000, 2000, 3, 16,   /* CGA */
+        {
+            /* CO80 */
+            0x71, 0x50, 0x5A, 0x0A,
+            0x1F, 0x06, 0x19, 0x1C,
+            0x02, 0x07, 0x06, 0x07,
+            0x00, 0x00, 0x00, 0x00,
+        }
+    }
+                                                    /* EGA (TODO) */
+};
+
 /* Check to see if this CRTC is present */
 int INITPROC crtc_probe(unsigned short crtc_base)
 {
     int i;
     unsigned char test = 0x55;
+    unsigned char original, value;
+
     /* We'll try writing a value to cursor address LSB reg (0x0F), then reading it back */
     outb(0x0F, crtc_base + CRTC_INDX);
-    unsigned char original = inb(crtc_base + CRTC_DATA);
-    if (original == test) test += 0x10;
+    original = inb(crtc_base + CRTC_DATA);
+    if (original == test)
+        test += 0x10;
     outb(0x0F, crtc_base + CRTC_INDX);
-    outb(test, crtc_base + CRTC_DATA);
-    /* Now wait a bit */
-    for (i = 0; i < 100; ++i) {} // TODO: Verify this doesn't get optimized out
+    outb_p(test, crtc_base + CRTC_DATA);
     outb(0x0F, crtc_base + CRTC_INDX);
-    unsigned char value = inb(crtc_base + CRTC_DATA);
-    if (value != test) return 0;
+    value = inb(crtc_base + CRTC_DATA);
+    if (value != test)
+        return 0;
     outb(0x0F, crtc_base + CRTC_INDX);
     outb(original, crtc_base + CRTC_DATA);
     return 1;
 }
 
-int INITPROC crtc_init(unsigned int t)
+void INITPROC crtc_init(int dev)
 {
     int i;
-    struct hw_params *p = &crtc_params[t];
+    struct hw_params *p = &crtc_params[dev];
+
     /* Set 80x25 mode, video off */
     outb(0x01, p->crtc_base + CRTC_MODE);
     /* Program CRTC regs */
@@ -54,16 +78,16 @@ int INITPROC crtc_init(unsigned int t)
         outb(p->init_bytes[i], p->crtc_base + CRTC_DATA);
     }
 
-    /* Check & clear vram */
+    /* Clear vram */
+#if 0   //FIXME remove: return value never checked, useless code
     for (i = 0; i < p->vseg_bytes; i += 2)
         pokew(i, p->vseg_base, 0x5555);
     for (i = 0; i < p->vseg_bytes; i += 2)
         if (peekw(i, p->vseg_base) != 0x5555) return 1;
+#endif
     for (i = 0; i < p->vseg_bytes; i += 2)
-        pokew(i, p->vseg_base, 0x7 << 8 | ' ');
+        pokew(i, p->vseg_base, 0x07 << 8 | ' ');
 
     /* Enable video */
     outb(0x09, p->crtc_base + CRTC_MODE);
-    return 0;
 }
-
diff --git a/elks/arch/i86/drivers/char/crtc-6845.h b/elks/arch/i86/drivers/char/crtc-6845.h
index 216c594f0..e9042410b 100644
--- a/elks/arch/i86/drivers/char/crtc-6845.h
+++ b/elks/arch/i86/drivers/char/crtc-6845.h
@@ -5,51 +5,16 @@
 
 #define N_DEVICETYPES 2
 
-#ifdef DEBUG
-static const char *type_string[] = {
-    "MDA",
-    "CGA",
-    "EGA",
-    "VGA",
-};
-#endif
-
 struct hw_params {
-    unsigned short w;
-    unsigned short h;
+    int w;
+    int h;
     unsigned short crtc_base;
-    unsigned vseg_base;
+    unsigned short vseg_base;
     int vseg_bytes;
-    unsigned char max_pages;
     unsigned short page_words;
+    unsigned char max_pages;
     unsigned char n_init_bytes;
     unsigned char init_bytes[16];
 };
 
-#ifdef CONFIG_CONSOLE_DUAL
-static struct hw_params crtc_params[N_DEVICETYPES] = {
-    { 80, 25, 0x3B4, 0xB000, 0x1000, 1, 2000, 16,
-        {
-            0x61, 0x50, 0x52, 0x0F,
-            0x19, 0x06, 0x19, 0x19,
-            0x02, 0x0D, 0x0B, 0x0C,
-            0x00, 0x00, 0x00, 0x00,
-        }
-    }, /* MDA */
-    { 80, 25, 0x3D4, 0xB800, 0x4000, 3, 2000, 16,
-        {
-            /* CO80 */
-            0x71, 0x50, 0x5A, 0x0A,
-            0x1F, 0x06, 0x19, 0x1C,
-            0x02, 0x07, 0x06, 0x07,
-            0x00, 0x00, 0x00, 0x00,
-        }
-    }, /* CGA */
-    // TODO
-    //{ 0 },                             /* EGA */
-    //{ 0 },                             /* VGA */
-};
-
-int INITPROC crtc_probe(unsigned short crtc_base);
-int INITPROC crtc_init(unsigned int t);
-#endif
+extern struct hw_params crtc_params[N_DEVICETYPES];
diff --git a/elks/include/linuxmt/init.h b/elks/include/linuxmt/init.h
index d606be425..1a1e0a817 100644
--- a/elks/include/linuxmt/init.h
+++ b/elks/include/linuxmt/init.h
@@ -65,6 +65,9 @@ extern void INITPROC meta_init(void);
 extern void INITPROC pty_init(void);
 extern void INITPROC tcpdev_init(void);
 
+extern int INITPROC crtc_probe(unsigned short crtc_base);
+extern void INITPROC crtc_init(int dev);
+
 extern void kfork_proc(void (*addr)());
 extern void arch_setup_user_stack(struct task_struct *, word_t entry);
 
diff --git a/elks/include/linuxmt/ntty.h b/elks/include/linuxmt/ntty.h
index c918d0a05..7ee573739 100644
--- a/elks/include/linuxmt/ntty.h
+++ b/elks/include/linuxmt/ntty.h
@@ -23,7 +23,11 @@
 
 /* Predefined maximum number of tty character devices */
 
+#ifdef CONFIG_CONSOLE_DUAL
 #define MAX_CONSOLES 4
+#else
+#define MAX_CONSOLES 3
+#endif
 #define MAX_PTYS     4
 
 #define TTY_MINOR_OFFSET 0
diff --git a/elkscmd/rootfs_template/bin/sys b/elkscmd/rootfs_template/bin/sys
index b13a0dbea..7f78d6af2 100755
--- a/elkscmd/rootfs_template/bin/sys
+++ b/elkscmd/rootfs_template/bin/sys
@@ -54,7 +54,6 @@ create_dev_dir()
 	mknod $MNT/dev/rd1	b 1 1
 	mknod $MNT/dev/tty2	c 4 1
 	mknod $MNT/dev/tty3	c 4 2
-	mknod $MNT/dev/tty4	c 4 3
 	mknod $MNT/dev/ttyS2	c 4 66
 	mknod $MNT/dev/ttyS3	c 4 67
 	mknod $MNT/dev/ttyp1	c 4 9