Quartus 19.4 in both linux and windows, fail to open ALTMEMPHY wizard.

The IP is only supported for certain devices thus not supported for all the devices in Quartus Pro 19.4. Also, the ALTMEMPHY-based memory controllers were removed from the IP Base Suite and Embedded Suite (EMIF) beginning with the v14.1 release.

Reference: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_ddr3_sdram.pdf#page=3

You can refer to this page for further information on External Memory Interfaces IP information for Intel Agilex, Stratix 10, Arria 10, and Cyclone 10 devices.

https://www.intel.com/content/www/us/en/programmable/support/support-resources/support-centers/external-memory-interfaces-support.html

Or you can refer to "Memory Interface and Controllers" in the IP catalog for the currently supported IP.

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