diff --git a/apps/plugins/varvara/tests/screen-vector.rom b/apps/plugins/varvara/tests/screen-vector.rom
new file mode 100644
index 0000000000..42aca5d3de
Binary files /dev/null and b/apps/plugins/varvara/tests/screen-vector.rom differ
diff --git a/apps/plugins/varvara/tests/screen.rom b/apps/plugins/varvara/tests/screen.rom
new file mode 100644
index 0000000000..de04425b3f
Binary files /dev/null and b/apps/plugins/varvara/tests/screen.rom differ
diff --git a/apps/plugins/varvara/tests/screen.tal b/apps/plugins/varvara/tests/screen.tal
new file mode 100644
index 0000000000..6d7ab72bde
--- /dev/null
+++ b/apps/plugins/varvara/tests/screen.tal
@@ -0,0 +1,177 @@
+( dev/screen )
+
+%RTN { JMP2r }
+%2/  { #01 SFT }
+%4/  { #02 SFT }
+
+( devices )
+
+|00 @System     [ &vector $2 &wst      $1 &rst    $1 &pad   $4 &r      $2 &g      $2 &b    $2 &debug  $1 &halt $1 ]
+|20 @Screen     [ &vector $2 &width    $2 &height $2 &pad   $2 &x      $2 &y     $2 &addr $2 &pixel $1 &sprite $1 ]
+
+( variables )
+
+|0000
+
+@count $2
+@center
+	&x $2 &y $2
+
+( init )
+
+|0100 ( -> )
+	
+	( vector )
+	;on-frame .Screen/vector DEO2
+
+	( theme ) 
+	#f07f .System/r DEO2
+	#f0e0 .System/g DEO2 
+	#f0c0 .System/b DEO2 
+
+	( find screen center )
+	.Screen/width DEI2 #01 SFT2 #0020 SUB2 .center/x STZ2
+	.Screen/height DEI2 #01 SFT2 .center/y STZ2
+
+	( draw )
+	;draw-table JSR2
+	;draw-sprites JSR2
+	;draw-1bpp JSR2
+	;draw-2bpp JSR2
+	;draw-pixels JSR2
+	
+BRK
+
+@on-frame ( -> )
+
+	.count LDZ2 INC2 [ DUP2 ] .count STZ2
+	
+	.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
+	.center/y LDZ2 #0050 SUB2 .Screen/y DEO2
+
+	( color ) #01 STH
+
+	SWP 
+	DUP #04 SFT [ #00 SWP ] #30 SFT2 ;font-hex ADD2 .Screen/addr DEO2
+	( draw ) STHkr .Screen/sprite DEO
+	#0f AND [ #00 SWP ] #30 SFT2 ;font-hex ADD2 .Screen/addr DEO2
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+	( draw ) STHkr .Screen/sprite DEO
+	DUP #04 SFT [ #00 SWP ] #30 SFT2 ;font-hex ADD2 .Screen/addr DEO2
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+	( draw ) STHkr .Screen/sprite DEO
+	#0f AND [ #00 SWP ] #30 SFT2 ;font-hex ADD2 .Screen/addr DEO2
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+	( draw ) STHr .Screen/sprite DEO
+
+BRK
+
+@draw-table ( -- )
+	
+	#10 #00
+	&loop
+		DUP #30 SFT #00 SWP ;font-hex ADD2 .Screen/addr DEO2
+		( x-axis ) 
+		DUP #30 SFT #00 SWP 
+		.center/x LDZ2 #0040 SUB2 ADD2 .Screen/x DEO2
+		.center/y LDZ2 #0050 SUB2 .Screen/y DEO2
+		( draw ) #01 .Screen/sprite DEO
+		( y-axis )
+		DUP #30 SFT #00 SWP 
+		.center/y LDZ2 #0040 SUB2 ADD2 .Screen/y DEO2
+		.center/x LDZ2 #0050 SUB2 .Screen/x DEO2
+		( draw ) #01 .Screen/sprite DEO
+		INC GTHk ,&loop JCN
+	POP2
+
+RTN
+
+@draw-sprites ( -- )
+	
+	;preview_icn .Screen/addr DEO2
+	#00 #00
+	&loop
+		( move ) DUP #0f AND #40 SFT 2/ #00 SWP 
+			.center/x LDZ2 #0040 SUB2 ADD2 .Screen/x DEO2
+		( move ) DUP #f0 AND 2/ #00 SWP 
+			.center/y LDZ2 #0040 SUB2 ADD2 .Screen/y DEO2
+		( draw ) DUP .Screen/sprite DEO
+		INC NEQk ,&loop JCN
+	POP2
+	
+RTN
+
+@draw-1bpp ( -- )
+
+	#10 #00
+	&loop
+		( color ) STHk
+		( y ) DUP 4/ [ #00 SWP ] #40 SFT2
+			[ .center/y LDZ2 #0040 SUB2 ADD2 ] STH2
+		( x ) DUP #03 AND [ #00 SWP ] #40 SFT2 #0040 ADD2 
+			[ .center/x LDZ2 #0008 ADD2 ADD2 ]
+		STH2r STHr #00 ;draw-circle JSR2
+		INC GTHk ,&loop JCN
+	POP2
+	
+RTN
+
+@draw-2bpp ( -- )
+
+	#10 #00
+	&loop
+		( color ) STHk
+		( y ) DUP 4/ [ #00 SWP ] #40 SFT2
+			[ .center/y LDZ2 ADD2 ] STH2
+		( x ) DUP #03 AND [ #00 SWP ] #40 SFT2 #0040 ADD2 
+			[ .center/x LDZ2 #0008 ADD2 ADD2 ]
+		STH2r STHr #80 ;draw-circle JSR2
+		INC GTHk ,&loop JCN
+	POP2
+	
+RTN
+
+@draw-circle ( x* y* color depth -- )
+	
+	ADD STH
+	;preview_icn .Screen/addr DEO2
+	.Screen/y DEO2
+	.Screen/x DEO2
+
+	#00 STHkr ADD .Screen/sprite DEO
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+		#10 STHkr ADD .Screen/sprite DEO
+	.Screen/x DEI2 #0008 SUB2 .Screen/x DEO2
+	.Screen/y DEI2 #0008 ADD2 .Screen/y DEO2
+		#20 STHkr ADD .Screen/sprite DEO
+	.Screen/x DEI2 #0008 ADD2 .Screen/x DEO2
+		#30 STHr ADD .Screen/sprite DEO
+
+RTN
+
+@draw-pixels ( -- )
+	
+	.center/y LDZ2 #0040 SUB2 .Screen/y DEO2
+	.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
+		#00 .Screen/pixel DEO
+	.center/x LDZ2 #0049 ADD2 .Screen/x DEO2
+		#01 .Screen/pixel DEO
+	.center/x LDZ2 #004a ADD2 .Screen/x DEO2
+		#02 .Screen/pixel DEO
+	.center/x LDZ2 #004b ADD2 .Screen/x DEO2
+		#03 .Screen/pixel DEO
+
+RTN
+
+@preview_icn  [
+	0f38 675f dfbf bfbf 0007 1820 2344 4848 
+
+@font-hex 
+	007c 8282 8282 827c 0030 1010 1010 1010
+	007c 8202 7c80 80fe 007c 8202 1c02 827c
+	000c 1424 4484 fe04 00fe 8080 7c02 827c
+	007c 8280 fc82 827c 007c 8202 1e02 0202
+	007c 8282 7c82 827c 007c 8282 7e02 827c
+	007c 8202 7e82 827e 00fc 8282 fc82 82fc
+	007c 8280 8080 827c 00fc 8282 8282 82fc
+	007c 8280 f080 827c 007c 8280 f080 8080