Visible to Intel only — GUID: mwh1409959333817
Ixiasoft
Visible to Intel only — GUID: mwh1409959333817
Ixiasoft
6.1.8.6. Nios® II Support
You can also use the address span extender to provide a window for the Nios® II processor, so that the HPS memory map is visible to the Nios® II processor. This technique allows the Nios® II processor to communicate with HPS peripherals.
In the example, a Nios® II processor has an address span extender from address 0x40000 to 0x80000. There is a window within the address span extender starting at 0x100000. Within the address span extender's address space there is a slave at base address 0x1100000. The slave appears to the Nios® II processor as being at address:
0x110000 - 0x100000 + 0x40000 = 0x050000
The address span extender window is dynamic. For example, when the Disable Slave Control Port option is turned off, the Nios® II processor is unable to see components on the slave side of the address span extender.