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Altera_Forum
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17 years ago

QUIP: add_new_cell supports only subset of architecture?

I was hoping that ::quartus::chip_editor::add_new_cell would allow me to add any valid cell in the device, but it seems to primarily (or only?) support LCCOMB and LCFF cells. In particular, I w...
Altera_Forum's avatar
Altera_Forum
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17 years ago

The ::quartus::chip_editor package also supports adding I/Os but will not allow you to add any arbitrary BLOCK_INSTANCE into the design. On Stratix® II FPGA devices only LCELL_FF, LCELL_COMBS and I/Os are supported for addition and deletion. ECOs can modify properties on several other blocks but due to the complicated rules governing other block types adding or removing them is not supported.

For I/Os specifically you need to use the “add_new_io” command rather than “add_new_cell”. For example: 

add_new_io -cell_name new_cell -location IOC_X0_Y2_N0 -direction bidir