| osReadHost | ... | Reads data from host. |
| osWriteHost | ... | Writes data to host. |
| osTestHost | ... | Gets the data transfer status from host. |
| uhCloseGame | ... | Closes communications between host (Indy) and emulator board. |
| uhOpenGame | ... | Opens communications between host (Indy) and emulator board. |
| uhReadGame | ... | Reads data from game into host (Indy). |
| uhReadRamrom | ... | Reads data from ramrom memory. |
| uhWriteGame | ... | Writes data from host (Indy) to game. |
| uhWriteRamrom | ... | Writes data to ramrom memory. |