diff --git a/README.md b/README.md
index da785e6..f7349bf 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,12 @@
 # no_internet
+The Atari 8-bit game created for Wapniak'2018 party. Not released in time for reasons.
+
+## TODO
+[] perpetual drawing of ground
+[] jumping dino
+[] dino collisions
+[] points
+[] game over msg
+[] bird
+[] clouds
+[] fix ground gfx
\ No newline at end of file
diff --git a/ni.asm b/ni.asm
index 5594943..de13756 100644
--- a/ni.asm
+++ b/ni.asm
@@ -3,8 +3,9 @@
 	icl 'macro.asm'
 
 	.zpvar tmp, tmp0, tmp1, tmp2, tmp3 .word
-sw = $80 ;screen width in bytes
-sh = 128 ; screen height in lines
+sw = $80 ;physical screen width in bytes (distance between beginnings of consecutive lines)
+sw_log = 48 ;logical screen width
+sh = 128 ;screen height in lines
 screen = $4000
 pmgraph = $9000
 	org $2000
diff --git a/procs.asm b/procs.asm
index 62c4850..b583973 100644
--- a/procs.asm
+++ b/procs.asm
@@ -342,6 +342,8 @@ dino_save_pm_y_prev	.by 0
 .proc move_dl ;screen window one byte right
 	;uses: AXY
 
+	inc:lda x_scr_offset
+	cmp #sw_l
 	mwa #dl_addrs+1 incr+1 ;self mod
 	ldx #sh
 incr	inc $ffff
@@ -350,6 +352,7 @@ incr	inc $ffff
 	bne incr
 	rts
 .endp
+x_scr_offset .by 0 ;where is the beginning of the screen
 
 .proc move_scr ;screen window one step (1/4 th of byte) right
 	dec:lda hscr_state