1. Download
   1. Binary format
   2. Kernel
   3. FS
   4. Bootstrap
   5. Extenal memory
2. Debugging
   1. Run
   2. Step
   3. Pause
   4. add/remove breakpoint
   5. Stop
   6. Reset
   7. Snapshot/Revert
3. Watching/Modify
   1. Reg
      1. GPR
      2. IO reg
   2. Ram
   3. Rom
   4. Other memory
   5. Stack
4. Monitoring
   1. Machine State
      1. mem size
      2. Clock cycle
      3. Instruction cycle
      4. CPU Performance
   2. Event
   3. Signal
   4. Interrupt
   5. Control state
5. Disasm
   1. Prediction
   2. Code Info
6. Simulation
   1. Audio
   2. LCD
   3. USB
   4. KBD
   5. Mouse
   6. Network
   7. Serial port
   8. Parralle port
   9. SD Card
   10. Block driver
   11. Other Devices
7. State Control
   1. Download
   2. Idle
   3. Suspended
   4. Run
   5. Stop
8. Log
9. Emulation
   1. CPUs
   2. Coprocessors
   3. IO Devices
   4. BUS