uae_fastmem_autoconfig
The option documentation is properly formatted yet
Description: Autoconfig Z2 Fast RAM Default: 1 Example: 0 Type: boolean
By default, fast memory is added as autoconfig expansion boards. You can use this option to disable that and wire fast memory directly at 0x00200000 ( 2nd fast memory bank, if any, will follow directly after).
Source: https://github.com/FrodeSolheim/fs-uae/blob/master/docs/options/uae_fastmem_autoconfig