Opened 5 years ago

Closed 5 years ago

Last modified 5 years ago

#151 closed enhancement (wontfix)

Support for high-color modes

Reported by: sdsnatcheralpha@… Owned by: pulkomandy
Priority: minor Milestone:
Component: GrafX2 Version: 2.6
Keywords: Cc:


Currently, GrafX2 supports up to 256 colors. But some machines of the 80s had high color modes (>256 and <=65536 colors) that have no support on modern image editors. For example:

1) Modes with special restrictions

  • Amiga HAM6
  • MSX2+ screen-10
  • MSX2+ screen-12

2) Modes without restrictions

  • Sharp X68000 15bit
  • Sharp X68000 16bit
  • NEC PC-88VA 15bit
  • FM-Towns 15bit

Change History (4)

comment:1 by Thomas Bernard, 5 years ago

Well GrafX2 is really a 8bits per pixel graphics editor.

comment:2 by sdsnatcheralpha@…, 5 years ago

Humm, ok. And what about HAM6 and the MSX2+ then? They're able to cram more than 256 colors into 8bits/pixel or less (6bits/pixel on HAM6, 8bits/pixel on the MSX2+).

Last edited 5 years ago by sdsnatcheralpha@… (previous) (diff)

comment:3 by Thomas Bernard, 5 years ago

Resolution: wontfix
Status: newclosed

I mean grafX2 support 8bits per pixel palettized pictures.
Where each pixel is stored as a 8bits value which is an index in a 256 colors palette (each color being 24bits).
HAM is a special "true color" picture using 2 bits per pixel to select the "command" , so only one of the RGB componant can be changed. (the 4th command is to fetch the color from the palette)

The MSX2+ screen 12 is also using more thant 8bit per color, the pixels are grouped by 4.

comment:4 by sdsnatcheralpha@…, 5 years ago

Ok, got it. :)

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