CONFIG_ATARI_ROM_ISA is not available for thedefaultarchitecture x86.
Result is shown for architecture m68k

Atari ROM port ISA adapter support


Linux Kernel Configuration
└─>Atari ROM port ISA adapter support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables support for the ROM port ISA adapter used to
operate ISA cards on Atari. Only 8 bit cards are supported, and
no interrupt lines are connected.
The only driver currently using this adapter is the EtherNEC
driver for RTL8019AS based NE2000 compatible network cards.