diff --git a/uxn/screen.ha b/uxn/screen.ha
index 22e70a3..c09e326 100644
--- a/uxn/screen.ha
+++ b/uxn/screen.ha
@@ -19,13 +19,23 @@ fn draw_pixel(value: u8, state: *uxn) void = {
 		const auto_a = (auto & 0b00000100) != 0;
 		set_pixel(layer1,x,y,color,state);
 		if(auto_x) {
-			const new_x = x + 1;
+			const new_x = if(flipx){
+				yield x - 1;
+			}else{
+				yield x + 1;
+			};
+			// const new_x = x + 1;
 			state.dev[0x28] = (new_x >> 8): u8;
 			state.dev[0x29] = (new_x): u8;
 			
 		};
 		if(auto_y) {
-			const new_y = y + 1;
+			const new_y = if(flipy){
+				yield y - 1;
+			}else{
+				yield y + 1;
+			};
+			// const new_y = y + 1;
 			state.dev[0x2a] = (new_y >> 8): u8;
 			state.dev[0x2b] = (new_y): u8;
 			
diff --git a/uxn/uxn.ha b/uxn/uxn.ha
index 6372434..ee08d5d 100644
--- a/uxn/uxn.ha
+++ b/uxn/uxn.ha
@@ -148,7 +148,7 @@ fn emu_dei(port: u8, state: *uxn) u8 = {
 			return time::date::second(&date): u8;
 		case 0xc7 =>
 			const date = time::date::localnow();
-			return time::date::weekday(&date): u8;
+			return (time::date::weekday(&date): u8 + 1) % 7;
 		case 0xc8 =>
 			const date = time::date::localnow();
 			const day = time::date::yearday(&date) - 1;
@@ -848,7 +848,7 @@ export fn uxn_step(state: *uxn) (done | error) = {
 			
 	// 	/* STH */ OPC(0x0f,GOT(x),PUT(x,!r))
 		case let sth_inst: STH =>
-			let val = pop_or_get(sth_inst,0,state);
+			const val = pop_from_stack(sth_inst.keep,sth_inst.ret,sth_inst.short,state);
 			push_to_stack(!sth_inst.ret, val, state);
 	// 	/* LDZ */ OPC(0x10,POx(a,0),PEK(a, x, 0xff))
 		case let ldz_inst: LDZ =>