Output Ports

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Port Name	Required	Description	Comments
`ram_wren`	Yes	Write enable signal to the RAM.	When asserted high, the `dataout` port data is valid.
`dataout[]`	Yes	Data sent to the external RAM.	Output port `[(width-1)..0]` wide. The value of the `dataout` port corresponds to the data at the address specified by the `ram_address` port.
ram_address[]	Yes	RAM address.
rom_address[]	No	ROM address that connects to the external ROM.	The `rom_address` port is applicable only in the external ROM mode. When the rom_address port is in use, connect the rom_address port to the address input port of the external ROM.
rom_rden	No	Read enable signal that feeds back to the external ROM.	The `rom_rden` port is applicable only in the external ROM mode. When asserted, the altmem_init megafunction generates a valid `rom_address` value.
init_busy	Yes	RAM initialization from ROM in progress indicator.	The `init_busy` signal remains active throughout the initialization process, and returns to an inactive state when initialization is complete.