HC4GX15 Datasheet, PDF (203/668 Pages) Altera Corporation – HardCopy IV Device Handbook

HIV52003-2.1
3. Mapping Stratix IV Device Resources
to HardCopy IV Devices
This chapter discusses the available options for mapping from a Stratix^® IV device to a
HardCopy^® IV device.
The Quartus II software limits resources to those available to both the Stratix IV FPGA
and the HardCopy IV ASIC. It also ensures that the design revision targeting a
HardCopy IV device retains the same functionality as the original Stratix IV design.
When compiling designs with the Quartus II software, you can specify one Stratix IV
target device and one or more Stratix IV mapping devices. When you specify at least
one mapping device, the Quartus II compiler constrains I/O pins and relevant hard IP
blocks to the minimum resources available in any of the selected mapping devices.
This feature allows vertical mapping between devices using the same package
footprint.
Selecting a HardCopy IV device as a companion device is similar to adding another
Stratix IV device to the mapping device chain. The Quartus II software compiles the
design to use the common resources available in all of the selected Stratix IV and
HardCopy IV devices.
The HardCopy IV companion device becomes the target device when you create the
HardCopy Companion revision.
Figure 3–1 shows the Device page of the Settings dialog box, where you choose the
companion device for the target device selected. The Device panel lists appropriate
companion devices based on the target device you select.
© January 2010 Altera Corporation
HardCopy IV Device Handbook, Volume 2