diff --git a/src/mame/drivers/abc80.cpp b/src/mame/drivers/abc80.cpp
index 600fec01c75..f52b903183d 100644
--- a/src/mame/drivers/abc80.cpp
+++ b/src/mame/drivers/abc80.cpp
@@ -65,7 +65,6 @@ Notes:
 
     TODO:
 
-	- hiresinv graphics artifacts
     - proper keyboard controller emulation
     - MyAB TKN80 80-column card
     - GeJo 80-column card
@@ -625,4 +624,4 @@ ROM_END
 //**************************************************************************
 
 //    YEAR  NAME    PARENT  COMPAT  MACHINE INPUT  INIT                  COMPANY                FULLNAME    FLAGS
-COMP( 1978, abc80,  0,      0,      abc80,  abc80, driver_device,  0,      "Luxor Datorer AB",  "ABC 80",   MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_KEYBOARD )
+COMP( 1978, abc80,  0,      0,      abc80,  abc80, driver_device,  0,      "Luxor Datorer AB",  "ABC 80",   MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_KEYBOARD )
diff --git a/src/mame/video/abc80.cpp b/src/mame/video/abc80.cpp
index 9209ecc0e7d..6ddf52f709f 100644
--- a/src/mame/video/abc80.cpp
+++ b/src/mame/video/abc80.cpp
@@ -101,15 +101,15 @@ void abc80_state::draw_scanline(bitmap_rgb32 &bitmap, int y)
 
 			if (l < 3) r0 = 0; else if (l < 7) r1 = 0; else r2 = 0;
 
-			int c0 = BIT(videoram_data, 0) | r0;
-			int c1 = BIT(videoram_data, 1) | r0;
-			int c2 = BIT(videoram_data, 2) | r1;
-			int c3 = BIT(videoram_data, 3) | r1;
-			int c4 = BIT(videoram_data, 4) | r2;
-			int c5 = BIT(videoram_data, 6) | r2;
+			int c0 = BIT(videoram_data, 0) || r0;
+			int c1 = BIT(videoram_data, 1) || r0;
+			int c2 = BIT(videoram_data, 2) || r1;
+			int c3 = BIT(videoram_data, 3) || r1;
+			int c4 = BIT(videoram_data, 4) || r2;
+			int c5 = BIT(videoram_data, 6) || r2;
 
-			if (!(c0 & c2 & c4)) data |= 0xe0;
-			if (!(c1 & c3 & c5)) data |= 0x1c;
+			if (c0 && c2 && c4) data |= 0xe0;
+			if (c1 && c3 && c5) data |= 0x1c;
 		}
 		else
 		{