MC6847 Display Modes Overview
Mode Element Resolution Colors Memory (bytes) Settings
G/!A
35		 S/!A
34		 EX/!IN
31		 GM2
27		 GM1
29		 GM0
30		 CSS
39		 INV
32
Alphanumeric Internal 32 x 16 1 + Black 512 0 0 0 X X X A A
Alphanumeric External 32 x 16 1 + Black 512 0 0 1 X X X A A
Semigraphics 4 64 x 32 8 + Black 512 0 1 0 X X X X X
Semigraphics 6 64 x 48 4 + Black 512 0 1 1 X X X A X
Color Graphics 1 64 x 64 4 1024 1 X X 0 0 0 A X
Resolution Graphics 1 128 x 64 1 + Black 1024 1 X X 0 0 1 A X
Color Graphics 2 128 x 64 4 2048 1 X X 0 1 0 A X
Resolution Graphics 2 128 x 96 1 + Black 1536 1 X X 0 1 1 A X
Color Graphics 3 128 x 96 4 3072 1 X X 1 0 0 A X
Resolution Graphics 3 128 x 192 1 + Black 3072 1 X X 1 0 1 A X
Color Graphics 6 128 x 192 4 6144 1 X X 1 1 0 A X
Resolution Graphics 6 256 x 192 1 + Black 6144 1 X X 1 1 1 A X

Mode Formats
Mode Display Format Memory Format
7 6 5 4 3 2 1 0
Alphanumeric Internal 5 x 7 Pixel Character X X A A A A A A
Alphanumeric External 5 x 12 Pixel Character L L L L L L L L
Semigraphics 4
L3 L2
L1 L0
4 Elements, 1 Color		 X C2 C1 C0 L3 L2 L1 L0
Semigraphics 6
L5 L4
L3 L2
L1 L0
6 Elements, 1 Color		 C1 C0 L5 L4 L3 L2 L1 L0
Color Graphics 1
EXd EXc EXb EXa
4 Elements, 4 Colors		 E1d E0d E1c E0c E1b E0b E1a E0a
Resolution Graphics 1
L7 L6 L5 L4 L3 L2 L1 L0
8 Elements, 1 Color		 L7 L6 L5 L4 L3 L2 L1 L0
Color Graphics 2
EXd EXc EXb EXa
4 Elements, 4 Colors		 E1d E0d E1c E0c E1b E0b E1a E0a
Resolution Graphics 2
L7 L6 L5 L4 L3 L2 L1 L0
8 Elements, 1 Color		 L7 L6 L5 L4 L3 L2 L1 L0
Color Graphics 3
EXd EXc EXb EXa
4 Elements, 4 Colors		 E1d E0d E1c E0c E1b E0b E1a E0a
Resolution Graphics 3
L7 L6 L5 L4 L3 L2 L1 L0
8 Elements, 1 Color		 L7 L6 L5 L4 L3 L2 L1 L0
Color Graphics 6
EXd EXc EXb EXa
4 Elements, 4 Colors		 E1d E0d E1c E0c E1b E0b E1a E0a
Resolution Graphics 6
L7 L6 L5 L4 L3 L2 L1 L0
8 Elements, 1 Color		 L7 L6 L5 L4 L3 L2 L1 L0