Hold-And-Modify
E736623
Hold-And-Modify is a distinctive Amiga graphics display mode that enables more on-screen colors by modifying individual pixel color components relative to preceding pixels.
Statements (34)
| Predicate | Object |
|---|---|
| instanceOf |
Amiga graphics display mode
ⓘ
computer graphics technique ⓘ |
| abbreviation | HAM NERFINISHED ⓘ |
| category |
Amiga video modes
NERFINISHED
ⓘ
raster graphics ⓘ |
| colorModel | RGB NERFINISHED ⓘ |
| commonUse |
Amiga demos
ⓘ
Amiga games title screens ⓘ displaying photo-realistic images on Amiga ⓘ |
| distinctionFrom |
indexed color modes with fixed per-pixel palette indices
ⓘ
standard Amiga bitplane modes ⓘ |
| era |
early 1990s
ⓘ
late 1980s ⓘ |
| hasVariant |
HAM6
ⓘ
HAM8 ⓘ |
| implementedIn |
Amiga custom chip Denise
NERFINISHED
ⓘ
Amiga custom chip Lisa NERFINISHED ⓘ |
| influenced | per-pixel component modification techniques in later graphics systems ⓘ |
| introducedBy | Commodore NERFINISHED ⓘ |
| limitation |
color fringing artifacts around sharp edges
ⓘ
difficulties with arbitrary pixel updates ⓘ |
| maxColorsOnScreen | 4096 ⓘ |
| mechanism |
modifies individual pixel color components relative to preceding pixels
ⓘ
reuses previous pixel color and alters selected RGB components ⓘ |
| notableFor | allowing thousands of colors on low-cost hardware ⓘ |
| platform | Commodore Amiga NERFINISHED ⓘ |
| purpose | to display more on-screen colors than standard bitplane modes ⓘ |
| requires |
palette base colors
ⓘ
sequential pixel decoding ⓘ |
| typicalBitDepth |
6-bit HAM
ⓘ
8-bit HAM ⓘ |
| usedIn |
Amiga Advanced Graphics Architecture
NERFINISHED
ⓘ
Amiga Enhanced Chip Set NERFINISHED ⓘ Amiga Original Chip Set NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Original Amiga chipset