FPGA Z80 has no real ROM.  It has a single 512K RAM chip.

The ROMless startup mode treats the entire 512KB as RAM.  384KB of RAM 
must be preloaded by the FPGA Monitor CF Loader.  There will be no ROM 
disk available under RomWBW.  There will be a RAM Disk and it's initial 
contents will be seeded by the image loaded by the CF Loader.

Bank		Contents	Description
--------	--------	-----------
0x0		BIOS		HBIOS Bank (operating)
0x1		IMG0		ROM Loader, Monitor, ROM OSes
0x2		IMG1		ROM Applications
0x3		IMG2		Reserved
0x4-0xB		RAMD		RAM Disk Banks
0xC		BUF		OS Buffers (CP/M3)
0xD		AUX		Aux Bank (CP/M 3, BPBIOS, etc.)
0xE		USR		User Bank (CP/M TPA, etc.)
0xF		COM		Common Bank, Upper 32KB