diff --git a/tty/pc-tty/ttypc.c b/tty/pc-tty/ttypc.c
index 1d355801..77e5b7a2 100644
--- a/tty/pc-tty/ttypc.c
+++ b/tty/pc-tty/ttypc.c
@@ -169,7 +169,7 @@ int main(void)
 	 * in the graphic mode already and the text mode buffer may contain garbage */
 
 	/* Set default cursor color */
-	_ttypc_vga_set(ttypc_common.vt, ttypc_common.vt->vram + ttypc_common.vt->cpos, FG_LIGHTGREY << 8, ttypc_common.vt->rows * ttypc_common.vt->cols - ttypc_common.vt->cpos);
+	_ttypc_vga_set(ttypc_common.vt, ttypc_common.vt->cpos, FG_LIGHTGREY << 8, ttypc_common.vt->rows * ttypc_common.vt->cols - ttypc_common.vt->cpos);
 
 	/* Run pool threads */
 	if ((err = beginthread(ttypc_poolthr, 1, ttypc_common.pstack, sizeof(ttypc_common.pstack), &ttypc_common)) < 0)
diff --git a/tty/pc-tty/ttypc_vga.c b/tty/pc-tty/ttypc_vga.c
index ba56ce10..f95e9f49 100644
--- a/tty/pc-tty/ttypc_vga.c
+++ b/tty/pc-tty/ttypc_vga.c
@@ -61,9 +61,10 @@ static void _ttypc_vga_setctype(ttypc_t *ttypc, uint8_t from, uint8_t to)
 }
 
 
-ssize_t _ttypc_vga_read(volatile uint16_t *vga, uint16_t *buff, size_t n)
+ssize_t _ttypc_vga_read(ttypc_vt_t *vt, size_t offs, uint16_t *buff, size_t n)
 {
 	size_t i;
+	volatile uint16_t *vga = vt->vram + offs;
 
 	for (i = 0; i < n; i++)
 		*(buff + i) = *(vga + i);
@@ -72,10 +73,11 @@ ssize_t _ttypc_vga_read(volatile uint16_t *vga, uint16_t *buff, size_t n)
 }
 
 
-ssize_t _ttypc_vga_write(ttypc_vt_t *vt, volatile uint16_t *vga, uint16_t *buff, size_t n)
+ssize_t _ttypc_vga_write(ttypc_vt_t *vt, size_t offs, uint16_t *buff, size_t n)
 {
 	size_t i;
 	int pos, col, row;
+	volatile uint16_t *vga = vt->vram + offs;
 
 	pos = vga - vt->vram;
 	col = pos % vt->cols;
@@ -98,10 +100,11 @@ ssize_t _ttypc_vga_write(ttypc_vt_t *vt, volatile uint16_t *vga, uint16_t *buff,
 }
 
 
-volatile uint16_t *_ttypc_vga_set(ttypc_vt_t *vt, volatile uint16_t *vga, uint16_t val, size_t n)
+volatile uint16_t *_ttypc_vga_set(ttypc_vt_t *vt, size_t offs, uint16_t val, size_t n)
 {
 	size_t i;
 	int pos, col, row;
+	volatile uint16_t *vga = vt->vram + offs;
 
 	pos = vga - vt->vram;
 	col = pos % vt->cols;
@@ -124,10 +127,11 @@ volatile uint16_t *_ttypc_vga_set(ttypc_vt_t *vt, volatile uint16_t *vga, uint16
 }
 
 
-volatile uint16_t *_ttypc_vga_move(ttypc_vt_t *vt, volatile uint16_t *dvga, volatile uint16_t *svga, size_t n)
+volatile uint16_t *_ttypc_vga_move(ttypc_vt_t *vt, size_t doffs, size_t soffs, size_t n)
 {
 	size_t i;
 	int pos, col, row;
+	volatile uint16_t *dvga = vt->vram + doffs, *svga = vt->vram + soffs;
 
 	if (dvga < svga) {
 		pos = dvga - vt->vram;
@@ -181,7 +185,7 @@ void _ttypc_vga_switch(ttypc_vt_t *vt)
 		return;
 
 	/* VGA memory -> VT memory */
-	_ttypc_vga_read(cvt->vram, cvt->mem, cvt->rows * cvt->cols);
+	_ttypc_vga_read(cvt, 0, cvt->mem, cvt->rows * cvt->cols);
 	cvt->vram = cvt->mem;
 
 	/* Set active VT, do it before writes to unlock access to the fb */
@@ -195,7 +199,7 @@ void _ttypc_vga_switch(ttypc_vt_t *vt)
 	mutexLock(vt->lock);
 	/* VT memory -> VGA memory */
 	vt->vram = ttypc->vga;
-	_ttypc_vga_write(vt, vt->vram, vt->mem, vt->rows * vt->cols);
+	_ttypc_vga_write(vt, 0, vt->mem, vt->rows * vt->cols);
 	/* Set cursor position... */
 	_ttypc_vga_setcursor(vt);
 	/* ... and visibility */
@@ -232,12 +236,12 @@ void _ttypc_vga_rollup(ttypc_vt_t *vt, unsigned int n)
 
 	/* Update scrollback buffer */
 	_ttypc_vga_allocscrollback(vt, k);
-	_ttypc_vga_read(vt->vram + (vt->top + n - k) * vt->cols, vt->scrb + (vt->scrbsz - k) * vt->cols, k * vt->cols);
+	_ttypc_vga_read(vt, (vt->top + n - k) * vt->cols, vt->scrb + (vt->scrbsz - k) * vt->cols, k * vt->cols);
 
 	/* Roll up */
 	if (n < vt->bottom - vt->top) {
-		_ttypc_vga_move(vt, vt->vram + vt->top * vt->cols, vt->vram + (vt->top + n) * vt->cols, (vt->bottom - vt->top + 1 - n) * vt->cols);
-		_ttypc_vga_set(vt, vt->vram + (vt->bottom + 1 - n) * vt->cols, vt->attr | ' ', n * vt->cols);
+		_ttypc_vga_move(vt, vt->top * vt->cols, (vt->top + n) * vt->cols, (vt->bottom - vt->top + 1 - n) * vt->cols);
+		_ttypc_vga_set(vt, (vt->bottom + 1 - n) * vt->cols, vt->attr | ' ', n * vt->cols);
 	}
 }
 
@@ -250,9 +254,9 @@ void _ttypc_vga_rolldown(ttypc_vt_t *vt, unsigned int n)
 	if (vt->bottom > vt->crow) {
 		k = min(n, vt->bottom - vt->crow);
 		l = min(k, vt->scrbsz);
-		_ttypc_vga_move(vt, vt->vram + (vt->top + k) * vt->cols, vt->vram + vt->top * vt->cols, (vt->bottom - vt->top + 1 - k) * vt->cols);
-		_ttypc_vga_set(vt, vt->vram + vt->top * vt->cols, vt->attr | ' ', (k - l) * vt->cols);
-		_ttypc_vga_write(vt, vt->vram + (vt->top + k - l) * vt->cols, vt->scrb + (vt->scrbsz - l) * vt->cols, l * vt->cols);
+		_ttypc_vga_move(vt, (vt->top + k) * vt->cols, vt->top * vt->cols, (vt->bottom - vt->top + 1 - k) * vt->cols);
+		_ttypc_vga_set(vt, vt->top * vt->cols, vt->attr | ' ', (k - l) * vt->cols);
+		_ttypc_vga_write(vt, (vt->top + k - l) * vt->cols, vt->scrb + (vt->scrbsz - l) * vt->cols, l * vt->cols);
 		vt->scrbsz -= l;
 	}
 }
@@ -274,15 +278,15 @@ void _ttypc_vga_scroll(ttypc_vt_t *vt, int n)
 
 	/* Save scroll origin */
 	if (!vt->scrbpos)
-		_ttypc_vga_read(vt->vram, vt->scro, vt->rows * vt->cols);
+		_ttypc_vga_read(vt, 0, vt->scro, vt->rows * vt->cols);
 
 	/* Copy scrollback */
 	vt->scrbpos += n;
-	_ttypc_vga_write(vt, vt->vram, vt->scrb + (vt->scrbsz - vt->scrbpos) * vt->cols, min(vt->scrbpos, vt->rows) * vt->cols);
+	_ttypc_vga_write(vt, 0, vt->scrb + (vt->scrbsz - vt->scrbpos) * vt->cols, min(vt->scrbpos, vt->rows) * vt->cols);
 
 	/* Copy scroll origin */
 	if (vt->scrbpos < vt->rows) {
-		_ttypc_vga_write(vt, vt->vram + vt->scrbpos * vt->cols, vt->scro, (vt->rows - vt->scrbpos) * vt->cols);
+		_ttypc_vga_write(vt, vt->scrbpos * vt->cols, vt->scro, (vt->rows - vt->scrbpos) * vt->cols);
 
 		if ((vt == vt->ttypc->vt) && vt->cst) {
 			/* Show cursor */
@@ -303,7 +307,7 @@ void _ttypc_vga_scrollcancel(ttypc_vt_t *vt)
 		return;
 
 	/* Restore scroll origin */
-	_ttypc_vga_write(vt, vt->vram, vt->scro, vt->rows * vt->cols);
+	_ttypc_vga_write(vt, 0, vt->scro, vt->rows * vt->cols);
 
 	/* Restore cursor position... */
 	vt->cpos -= vt->scrbpos * vt->cols;
diff --git a/tty/pc-tty/ttypc_vga.h b/tty/pc-tty/ttypc_vga.h
index d8cbb5e2..52a1e0bb 100644
--- a/tty/pc-tty/ttypc_vga.h
+++ b/tty/pc-tty/ttypc_vga.h
@@ -159,19 +159,19 @@ enum {
 /* clang-format off */
 
 /* Copies VGA screen buffer to buff */
-extern ssize_t _ttypc_vga_read(volatile uint16_t *vga, uint16_t *buff, size_t n);
+extern ssize_t _ttypc_vga_read(ttypc_vt_t *vt, size_t offs, uint16_t *buff, size_t n);
 
 
 /* Copies buff to VGA screen buffer */
-extern ssize_t _ttypc_vga_write(ttypc_vt_t* vt, volatile uint16_t *vga, uint16_t *buff, size_t n);
+extern ssize_t _ttypc_vga_write(ttypc_vt_t* vt, size_t offs, uint16_t *buff, size_t n);
 
 
 /* Sets VGA screen buffer characters to val */
-extern volatile uint16_t *_ttypc_vga_set(ttypc_vt_t *vt, volatile uint16_t *vga, uint16_t val, size_t n);
+extern volatile uint16_t *_ttypc_vga_set(ttypc_vt_t *vt, size_t offs, uint16_t val, size_t n);
 
 
 /* Moves VGA screen memory */
-extern volatile uint16_t *_ttypc_vga_move(ttypc_vt_t *vt, volatile uint16_t *dvga, volatile uint16_t *svga, size_t n);
+extern volatile uint16_t *_ttypc_vga_move(ttypc_vt_t *vt, size_t doffs, size_t soffs, size_t n);
 
 
 /* Switches to another VT */
diff --git a/tty/pc-tty/ttypc_vt.c b/tty/pc-tty/ttypc_vt.c
index d87ac0bf..a00a5be6 100644
--- a/tty/pc-tty/ttypc_vt.c
+++ b/tty/pc-tty/ttypc_vt.c
@@ -154,7 +154,7 @@ static void _ttypc_vt_sput(ttypc_vt_t *vt, char c)
 		case ESC_INIT:
 			/* InseRt Mode */
 			if (vt->irm)
-				_ttypc_vga_move(vt, vt->vram + vt->cpos + 1, vt->vram + vt->cpos, vt->cols - vt->ccol - 1);
+				_ttypc_vga_move(vt, vt->cpos + 1, vt->cpos, vt->cols - vt->ccol - 1);
 
 			_ttypc_vt_sdraw(vt, c);
 
@@ -785,7 +785,7 @@ int ttypc_vt_init(ttypc_t *ttypc, unsigned int ttybuffsz, ttypc_vt_t *vt)
 	_ttypc_vtf_str(vt);
 
 	/* Clear screen */
-	_ttypc_vga_set(vt, vt->vram, vt->attr | ' ', vt->cols * vt->rows);
+	_ttypc_vga_set(vt, 0, vt->attr | ' ', vt->cols * vt->rows);
 
 	return EOK;
 }
diff --git a/tty/pc-tty/ttypc_vtf.c b/tty/pc-tty/ttypc_vtf.c
index 7699554a..68b6baf2 100644
--- a/tty/pc-tty/ttypc_vtf.c
+++ b/tty/pc-tty/ttypc_vtf.c
@@ -294,7 +294,7 @@ void _ttypc_vtf_aln(ttypc_vt_t *vt)
 	vt->cpos = 0;
 	vt->ccol = 0;
 	vt->crow = 0;
-	_ttypc_vga_set(vt, vt->vram, vt->attr | 'E', vt->rows * vt->cols);
+	_ttypc_vga_set(vt, 0, vt->attr | 'E', vt->rows * vt->cols);
 }
 
 
@@ -382,15 +382,15 @@ void _ttypc_vtf_clreos(ttypc_vt_t *vt)
 {
 	switch (vt->parms[0]) {
 	case 0:
-		_ttypc_vga_set(vt, vt->vram + vt->cpos, vt->attr | ' ', vt->cols * vt->rows - vt->cpos);
+		_ttypc_vga_set(vt, vt->cpos, vt->attr | ' ', vt->cols * vt->rows - vt->cpos);
 		break;
 
 	case 1:
-		_ttypc_vga_set(vt, vt->vram, vt->attr | ' ', vt->cpos + 1);
+		_ttypc_vga_set(vt, 0, vt->attr | ' ', vt->cpos + 1);
 		break;
 
 	case 2:
-		_ttypc_vga_set(vt, vt->vram, vt->attr | ' ', vt->cols * vt->rows);
+		_ttypc_vga_set(vt, 0, vt->attr | ' ', vt->cols * vt->rows);
 		break;
 	}
 }
@@ -400,15 +400,15 @@ void _ttypc_vtf_clreol(ttypc_vt_t *vt)
 {
 	switch (vt->parms[0]) {
 	case 0:
-		_ttypc_vga_set(vt, vt->vram + vt->cpos, vt->attr | ' ', vt->cols - vt->ccol);
+		_ttypc_vga_set(vt, vt->cpos, vt->attr | ' ', vt->cols - vt->ccol);
 		break;
 
 	case 1:
-		_ttypc_vga_set(vt, vt->vram + vt->cpos - vt->ccol, vt->attr | ' ', vt->ccol + 1);
+		_ttypc_vga_set(vt, vt->cpos - vt->ccol, vt->attr | ' ', vt->ccol + 1);
 		break;
 
 	case 2:
-		_ttypc_vga_set(vt, vt->vram + vt->cpos - vt->ccol, vt->attr | ' ', vt->cols);
+		_ttypc_vga_set(vt, vt->cpos - vt->ccol, vt->attr | ' ', vt->cols);
 		break;
 	}
 }
@@ -454,8 +454,8 @@ void _ttypc_vtf_il(ttypc_vt_t *vt)
 			_ttypc_vga_rolldown(vt, p);
 		}
 		else {
-			_ttypc_vga_move(vt, vt->vram + vt->cpos + p * vt->cols, vt->vram + vt->cpos, (vt->bottom - vt->crow + 1 - p) * vt->cols);
-			_ttypc_vga_set(vt, vt->vram + vt->cpos, vt->attr | ' ', p * vt->cols);
+			_ttypc_vga_move(vt, vt->cpos + p * vt->cols, vt->cpos, (vt->bottom - vt->crow + 1 - p) * vt->cols);
+			_ttypc_vga_set(vt, vt->cpos, vt->attr | ' ', p * vt->cols);
 		}
 	}
 }
@@ -470,8 +470,8 @@ void _ttypc_vtf_ic(ttypc_vt_t *vt)
 	else if (p > vt->cols - vt->ccol)
 		p = vt->cols - vt->ccol;
 
-	_ttypc_vga_move(vt, vt->vram + vt->cpos + p, vt->vram + vt->cpos, vt->cols - vt->ccol - p);
-	_ttypc_vga_set(vt, vt->vram + vt->cpos, vt->attr | ' ', p);
+	_ttypc_vga_move(vt, vt->cpos + p, vt->cpos, vt->cols - vt->ccol - p);
+	_ttypc_vga_set(vt, vt->cpos, vt->attr | ' ', p);
 }
 
 
@@ -492,8 +492,8 @@ void _ttypc_vtf_dl(ttypc_vt_t *vt)
 			_ttypc_vga_rollup(vt, p);
 		}
 		else {
-			_ttypc_vga_move(vt, vt->vram + vt->cpos, vt->vram + vt->cpos + p * vt->cols, (vt->bottom - vt->crow + 1 - p) * vt->cols);
-			_ttypc_vga_set(vt, vt->vram + (vt->bottom + 1 - p) * vt->cols, vt->attr | ' ', p * vt->cols);
+			_ttypc_vga_move(vt, vt->cpos, vt->cpos + p * vt->cols, (vt->bottom - vt->crow + 1 - p) * vt->cols);
+			_ttypc_vga_set(vt, (vt->bottom + 1 - p) * vt->cols, vt->attr | ' ', p * vt->cols);
 		}
 	}
 }
@@ -508,8 +508,8 @@ void _ttypc_vtf_dch(ttypc_vt_t *vt)
 	else if (p > vt->cols - vt->ccol)
 		p = vt->cols - vt->ccol;
 
-	_ttypc_vga_move(vt, vt->vram + vt->cpos, vt->vram + vt->cpos + p, vt->cols - vt->ccol - p);
-	_ttypc_vga_set(vt, vt->vram + vt->cpos + vt->cols - p, vt->attr | ' ', p);
+	_ttypc_vga_move(vt, vt->cpos, vt->cpos + p, vt->cols - vt->ccol - p);
+	_ttypc_vga_set(vt, vt->cpos + vt->cols - p, vt->attr | ' ', p);
 }
 
 
@@ -569,7 +569,7 @@ void _ttypc_vtf_ris(ttypc_vt_t *vt)
 	vt->scrbpos = 0;
 
 	/* Clear screen */
-	_ttypc_vga_set(vt, vt->vram, vt->attr | ' ', vt->cols * vt->rows);
+	_ttypc_vga_set(vt, 0, vt->attr | ' ', vt->cols * vt->rows);
 	/* Soft reset */
 	_ttypc_vtf_str(vt);
 }
@@ -585,7 +585,7 @@ void _ttypc_vtf_ech(ttypc_vt_t *vt)
 	else if (p > vt->cols - vt->ccol)
 		p = vt->cols - vt->ccol;
 
-	_ttypc_vga_set(vt, vt->vram + vt->cpos, vt->attr | ' ', p);
+	_ttypc_vga_set(vt, vt->cpos, vt->attr | ' ', p);
 }