Student question re possible OS design

[Simon]

I am a student researching OS design. I have done alot of reading, but have no programming background. However, i do understand most technical documentation, and have a sound computing background. I have seen an OS called JaysOS. In this he shows his OS running on a gameboy. Three mini apps (games) and a static picture viewer. This got me thinking. (excuse lack of terminology and descirption, hopefully someone will get what I am asking) In a nutshell, I am just curious, if someone wanted an OS to be embedded on a chip, so that when in an ON state, it displays an animated gif file, or text on an lcd screen. Is this possible and how ?
???

[smcinnes]

I forgot to get a login first, now I can not modify my message. I wanted to added this URL as a reference. I am replying to my message using my new login ;D
URL = http://badpint.org/jaysos/

[Pype.Clicker]

what you say is of course possible, but it's not an "OS". That's an application.

On embedded systems, OSes are much like libraries that you will link to your application to have a final ROM image ...

On game platforms, you have available ROM that performs BIOS-like functionnalities (save state to memory card, locate file XXX on the game media, etc) and game programming libraries (something looking like DirectX or SDL depending on the one you know)...