The states are
- grouped by flows, related states are in a dashed box
- grouped in classes by color
| Color | State Class |
|---|---|
| blue | idle/fetch/decode states |
| cyan | console handling states |
| light orange | source address mode flow |
| dark orange | destination address mode flows |
| green | states for main opcode handling |
| red | states for error handling |
The grey fork_... hexagons represent three transition groups which are
common to the control flow of several states. There is no corresponding
state, these symbols just help to reduce the number of transition lines
on the flow chart.
The transitions are color coded too:
| Color | Transition Class |
|---|---|
| green | normal forward transition in a flow |
| blue | i/o wait loop |
| red | error/trap handling |
| magenta | fatal errors to cpufail state |
| thick black | link to a fork_... symbol |
| black | all other transitions |