Mint NextMove PCI Manual de usuario descargar pdf (Pagina 68)

8-10 NextMove PCI DPR Map

Functionality Code Register (3FC)

This register describes the capabilities of the software running on NextMove. The register may be used by

a host to determine how it should communicate with the software, what data is stored in dual port RAM,

etc. The register contains a series of bits each of which indicate whether a specific feature is supported.

The table below describes the current list of standard application capabilities. It is expected that this list

will grow over time. Application programs should set the relevant bits in this register after all other

initialization. It is recommended that the host does not write to this location.

Bit Description of Feature Symbolic Constant

0 Loader communication protocol. fcLOADER_COMMS

1 MML update of locations 0x000 to 0x012F. fcAUTO_UPDATE

2 ICM communication protocol. fcFRONT_COMMS

3 Pseudo Serial Port Buffer. fcSERIAL_PORT

4 Mint interpretation of serial buffer

communications (Comms Protocol)

fcCOMMS_ON

5 Mint running fcMINT_RUNNING

6 - 15 Reserved

Scratchpad Register (3FD)

This register is a general purpose register used only by the host. It is only written to by the Loader

immediately after reset when it is cleared to zero. It may be used by the host to determine that a

NextMove may be installed on the bus. As NextMove will not write to this location the host can write codes

and read them back in the knowledge that they should not have changed. After use by the PC host, the

scratchpad should be returned to the value it originally contained.

It is recommended that NextMove application programs do not write to this register.

1 2 ... 63 64 65 66 67 68 69 70

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Mint NextMove PCI Manual de usuario Pagina 68