FlexxCpu version 05 rev. D released

This is a minor update.
There was a problem that was preventing the reading from video memory (0xb800), this error was corrected.
The MOV opcode has been changed with name STM as the opposite to LDM.
I've implemented the reading from the 0x60 input port through the INP opcode, see Flexx_MiniGame_Test.asm
Now we can read the code from keyboard, for example: INP K, 0x60 ---> read the keyboard code into K register
I greet you and thank you.