Z1RCC has no real ROM.  It has a single 512K RAM chip.  The RomWBW
ROMless startup mode is used.

The ROMless startup mode treats the entire 512KB as RAM.  The entire 
512KB of RAM (less the top 32KB) must be preloaded by the Z1RCC 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