🚀 go-pugleaf

mharrell@sojourn1.sojourn.com (Matt Harrell) wrote:
>	I've read a few posts about using HAM8 mode on the Workbench
>screen.  I downloaded "WBHacksAGA" from the Aminet, and modified my
>envarc:sys/screenmode.prefs (after renaming the original!) to use HAM8
>mode.  It definitely starts up OK in HAM8 after the reboot.  One thing
>I noticed right away was dramatically improved speed over the "normal"
>8-bit (256 color out of 16.8 million) mode.  However, it also seems to
>confuse the hell out of the Workbench, and any program that tries to
>put an image on the Workbench screen.  It also seems to muck up the
>top 4 colors of the Workbench's (AmigaOS3.0 on an A1200) palette (they
>all come out as a bright green).  I can't change the colors in the
>palette program in Preferences because it's the one program on my hard
>disk that still seems to think that the colors are OK.  When I run
>AMosaic and have it display a JPEG, for instance, on the Workbench
>screen using an external viewer (MultiView), the JPEG ends up looking
>much worse than it does on an ordinary 256 (or even 128) color
>screen--like it has only 16 or 32 colors instead of many thousands to
>display the picture.  Additionally, if I try to use any picture with
>lots of colors for a background on the Workbench (not something I
>actually want to do, but I tried it as a test to see if the mode was
>working correctly) the colors come out totally wrong--so bad that you
>can't tell what the picture is supposed to be.
>	Has anyone managed to get this to work properly?  Is there any
>way that HAM8 mode can be used on the Workbench screen and still have
>programs function correctly?  Thanks a bunch (or maybe two).

Try getting MUI-Screenmode on aminet or at :
http://www.medio.mh.se/~orgin/software.html

When using Ham6 or Ham8 , programs think that there is only 16/64 pens to use.
This is because Ham6 and Ham8 has resp. 16 and 64 base colours.

Ham 6 uses 6 bitplanes - But 2 of them is used to get the Ham colours.
 Ie. 2^4 (16) base pens.

Ham 8 uses 8 bitplanes - But 2 of them is used to get the Ham colours.
 Ie. 2^6 (64) base pens.

All colours are made of three components : Red,Green and Blue.

These 2 bits functions something like this :
   00 - Use base colour
   01 - Modify Red component , keep Green and Blue.
   10 - Modify Green component , keep Red and Blue.
   11 - Modify Blue component , keep Red and Green.

This means that in Ham6 you can only set each component by 16 steps,
and in Ham8 64 steps.

Most programs do not understand that you are running Ham mode. So they only
use the base colours. There are a few programs that can use the ham colours.

Which means that Ibrowse will only use 16 / 64 colours for its pictures.

Check out the software on my homepage. I have been using Ham6 for over a
year now and there are some snapshots of my Wb there.

Regards.
Bjorn Hagstrom
ping9514@ntostud.mh.se
http://www.medio.mh.se/~orgin/