Mint NextMove PCI Manual de usuario descargar pdf (Pagina 66)

8-8 NextMove PCI DPR Map

Each location is a floating point value. Comms is accessed using the COMMS keyword in MintMT or the

getComms / setComms functions.

8.2.5 Immediate command mode

This area is reserved for immediate command mode (ICM) function calls.

8.2.6 Pseudo serial interface

The serial interface works by implementing a 64 word circular buffer within DPR. There is one such buffer

for the receive buffer and one for the transmit buffer. Head and tail pointers are also located in DPR

allowing both sides of DPR to check the status of the buffers.

The serial interface occupies DPR locations 0x150 to 0x1D5 in the following configuration:

Txd Buffer

0x85

0x46

Txd Reserved 0x45

Txd Tail 0x44

Txd Head 0x43

Rxd Buffer

0x42

0x03

Rxd Reserved 0x02

Rxd Tail 0x01

Rxd Head 0x00

The buffer itself has two sets of symbolic constants, depending on which side, NextMove or host, that is

using them.

Offset Symbolic Constant - Host Symbolic Constant - NextMove

0x00

ofTXD_HEAD ofNM_RXD_HEAD

0x01

ofTXD_TAIL ofNM_RXD_TAIL

0x03

ofTXD_BUFFER ofNM_RXD_BUFFER

0x43

ofRXD_HEAD ofNM_TXD_HEAD

0x44

ofRXD_TAIL ofNM_TXD_TAIL

0x46

ofRXD_BUFFER ofNM_TXD_BUFFER

1 2 ... 61 62 63 64 65 66 67 68 69 70

Sin comentarios

Mint NextMove PCI Manual de usuario Pagina 66