How can I access a CD-RTOS/OS-9 prompt using a CD-i player?
CD-i’s operating system is called CD-RTOS. It is based on version 2.4 of Microware’s OS-9. Every CD-i player resides the kernel of this operating system in ROM, together with other critical system components such as drivers and the player and CD-Audio shell. Usually this ROM is 512 KB in size (some professional players that contain additional tools have double that size). To access the roots of the operating system you should use a command prompt shell. OS-9 supports such a shell, which is very Unix-like, but since a consumer CD-i player is not intended to be used in conjuction with a display terminal, this shell is not included in the ROM of consumer CD-i players. If you want to access a shell using a consumer player, you need a CD-i disc that includes such a shell which it should execute during the startup of the disc, or after providing such an option in the CD-i application (since you have no other means of starting the shell on a consumer player).
