Hi!
In an application i am using a virtual Machine simulation on 8051 derivative. I have wrote many instructions but every time i got short of code space in 8051. Currently i have, nearly 600bytes of code space to write all of the machine simulation, and 10 bytes of free IRAM. But i have big EEPROM (8k to 64kbytes). What i need is,
1, Some set of simple or complex virtual instructions which can waste as much virtual machine space as it like but doesnot requires much space on 8051.
2, I need to know that is there some wired way exist, by which i can indirectly access upper 128 bytes of IRAM (which are also called SFR).
3, I also need to know how i can access bits indirectly.
4, Also how can i run subroutines indirectly.
5, I have already read Application note from Atmel several times, Is there any other Application note or example etc exist on virtual machine.

All time critical code has been written and what i need from this virtual machine to read some bits and registers, compare them and write back etc.

Thank you!