Having recent rediscovered some old projects, I thought I'd share this little
graphics demo, written in AMOS Pro.
It demonstrates fading out a HAM image to black, done using the blitter
(via the Screen Copy command's blitter mode parameter).
The algorithm's similar to the classic "shadebobs" effect, only with an extra
pass to "clamp" pixel values and stop them wrapping around.
Compiled binary and full source code is included.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                50291   56676  88.7% -lh5- de28 Mar 15  1980 HAMFade/April.ham6
[generic]                43376   48364  89.7% -lh5- 47b6 Mar 15  1980 HAMFade/Bird.ham6
[generic]                35113   40996  85.6% -lh5- b829 Mar 16  1980 HAMFade/Candles.ham6
[generic]                61336   61336 100.0% -lh0- 0f46 Mar 16  1980 HAMFade/Dog.ham6
[generic]                52203   55690  93.7% -lh5- cc18 Mar 16  1980 HAMFade/Forest.ham6
[generic]                39793   66024  60.3% -lh5- c038 Feb 15  2003 HAMFade/HAMFade
[generic]                 2462    7130  34.5% -lh5- 73fd Feb 15  2003 HAMFade/HAMFade.AMOS
[generic]                  407    1122  36.3% -lh5- a10d Feb 15  2003 HAMFade/HAMFade.info
[generic]                53995   57716  93.6% -lh5- 66ed Mar 15  1980 HAMFade/October.ham6
[generic]                61594   61594 100.0% -lh0- 15d9 Mar 16  1980 HAMFade/Rocks.ham6
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        10 files  400570  456648  87.7%            Mar 19 22:02