Amiga Graphics Archive

Screen modes

The Amiga was capable of displaying various screen resolutions. All monitors and TV's of that time had a picture aspect ratio of 4:3 but the pixel aspect ratio varied greately. The ratios in the lists are pixel aspect ratios and the are rounded to the nearest neighbour. In reality PAL pixels are a tiny bit wider than they are tall (16:15) and NTSC pixels are a bit taller than they are wide (8:9).

OCS (Original Chip Set - released 1985)

The hardware that was used in the first generation of Amigas still very close to the original concept of the Amiga being used as a video games console. For that reason the screen modes were tied very closely to the television standards NTSC and PAL that were in use at that time. This also meant that the screen modes varied depending on what type of Amiga you had and where you had it.

TV Compatible

LowRes
320×200 @ 60Hz (NTSC)
320×256 @ 50Hz (PAL)
up to 32 colors, EHB, HAM
4096 color palette
LowRes Laced
320×400 @ 60Hz (NTSC)
320×512 @ 50Hz (PAL)
up to 32 colors, EHB, HAM
4096 color palette
HiRes
640×200 @ 60Hz (NTSC)
640×256 @ 50Hz (PAL)
up to 16 colors
4096 color palette
HiRes Laced
640×400 @ 60Hz (NTSC)
640×512 @ 50Hz (PAL)
up to 16 colors
4096 color palette

ECS (Enhanced Chip Set - released 1990)

The enhanced chip set was released with several small improvements over the original chip set. New screen modes were added to support higher resolutions offered by multisync monitors but at the same time sacrificing color depth.
Technical limitations also limited the usefulness of many of these new modes as most had either very extreme pixel aspect ratios or were limited to very few colors. The reason for this was possibly the attempt to squeeze addition features out of the original chip set design without changing to much on the chip.

TV Compatible

Super-HiRes
1280×200 @ 60Hz (NTSC)
1280×256 @ 50Hz (PAL)
up to 4 colors
64 color palette
SuperHiRes Laced
1280×400 @ 60Hz (NTSC)
1280×512 @ 50Hz (PAL)
up to 4 colors
64 color palette

Multiscan

Productivity
1280×200 @ 60Hz up to 4 colors
64 color palette
Productivity Laced
1280×400 @ 60Hz up to 4 colors
64 color palette

A2024

10Hz
1024×800 @ 10Hz (NTSC)
1024×1024 @ 10Hz (PAL)
up to 4 colors
64 color palette
15Hz
1024×800 @ 15Hz (NTSC)
1024×1024 @ 15Hz (PAL)
up to 4 colors
64 color palette

Euro36

LowRes
320×200 @ 72Hz up to 32 colors, EHB, HAM
4096 color palette
LowRes Laced
320×400 @ 72Hz up to 32 colors, EHB, HAM
4096 color palette
HiRes
640×200 @ 72Hz up to 16 colors
4096 color palette
HiRes Laced
640×400 @ 72Hz up to 16 colors
4096 color palette
Super-HiRes
1280×200 @ 72Hz up to 4 colors
64 color palette
Super-HiRes Laced
1280×400 @ 72Hz up to 4 colors
64 color palette

Euro72

Productivity
640×400 @ 72Hz up to 4 colors
64 color palette
Productivity Laced
640×800 @ 72Hz up to 4 colors
64 color palette

Super72

HiRes
400×300 @ 72Hz up to 16 colors
4096 color palette
HiRes Laced
400×600 @ 72Hz up to 16 colors
4096 color palette
Super-HiRes
800×300 @ 72Hz up to 4 colors
64 color palette
Super-HiRes Laced
800×600 @ 72Hz up to 4 colors
64 color palette

AGA (Advanced Graphics Architecture - released 1992)

The AGA chipset was the first real improvement over the original chipset. Further screen modes where added, the color palette was extended to 24bit and resolutions with up to 256 colors. All resolutions could now be used with all color modes.

Scan doubler (DblNTSC/DblPAL)

LowRes
320×200 @ 60Hz (NTSC)
320×256 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette
LowRes No Flicker
320×400 @ 60Hz (NTSC)
320×512 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette
LowRes Laced
320×800 @ 60Hz (NTSC)
320×1024 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette
HiRes
640×200 @ 60Hz (NTSC)
640×256 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette
HiRes No Flicker
640×400 @ 60Hz (NTSC)
640×512 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette
HiRes Laced
640×800 @ 60Hz (NTSC)
640×1024 @ 50Hz (PAL)
up to 256 colors, EHB, HAM, HAM8
16,777,216 color palette