Titlebar messages

Messages, that can appear on the titlebar of main application window, can come from:

1. Currently executing program
2. Kernel, if it crashes

In this second case, allowed messages are:

Memory error

Cannot perform elementary operation on the memory.

• The reason can be that eg an address or an addressing mode in a instruction is wrong.
• It is also possible that the memory size is too small for the program you are trying to run.

Invalid opcode

Invalid opcode category

Kernel has met unknown instruction during execution.

• Control could have been transmitted to the memory area which is unengaged, engaged with data, not the code or just into the wrong place in code (somewhere inside an instruction).
• Code could have been intended to the virtual machine with other version of kernel that manages new instructions.

Memory overlap

Memory areas given to an instruction overlaps and this is illegal in this instruction.

No disk to boot

There is no disk inserted or neither of inserted disks is bootable.

• A disk is bootable only if it is specially marked.
• Only disks which have Remember attribute are inserted after the machine is restarted.

Not enough memory to boot from disk x

Memory size is too small for kernel to load the program from disk that is booting.

• Disk header contains size of the program that should be loaded during boot. This header might be corrupted.
• It is also possible that memory size is too small for this program.

Cannot boot from disk x

An error occurred during load the program from disk that is booting.

• This error is most likely connected with disk read error.

Internal error [x]

There was a wrong value of the parameter used internally in kernel. It means a bug in the kernel. The reason of the error can be identified by searching kernel source code for this error message with its code.

• This error should never occur.