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.

All labels observed (3)

Label Occurrences
Hold-And-Modify canonical 2
HAM (Hold-And-Modify) 1
Hold-And-Modify 6 1

How this entity was disambiguated

Statements (34)

Predicate Object
instanceOf Amiga graphics display mode ⓘ
computer graphics technique ⓘ
abbreviation HAM ⓘ
category Amiga video modes ⓘ
raster graphics ⓘ
colorModel RGB ⓘ
linked to: RGB color model
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 ⓘ
linked to: Amiga OCS

Amiga custom chip Lisa ⓘ
linked to: Amiga OCS
influenced per-pixel component modification techniques in later graphics systems ⓘ
introducedBy Commodore ⓘ
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 ⓘ
linked to: Amiga
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 ⓘ
linked to: Amiga OCS

Amiga Enhanced Chip Set ⓘ
Amiga Original Chip Set ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Original Amiga chipset → supportsMode → Hold-And-Modify ⓘ
subject linked to: Original Amiga chipset (OCS)
Extra Half-Brite → relatedMode → HAM (Hold-And-Modify) ⓘ
linked to: Hold-And-Modify
HAM-8 display mode → technique → Hold-And-Modify ⓘ
Hold-And-Modify 8 → predecessor → Hold-And-Modify 6 ⓘ
subject linked to: Hold-And-Modify 8 (HAM-8)
linked to: Hold-And-Modify