ZZRCC has no real ROM.  It has a single 512K RAM chip.  There
are two startup modes supported by RomWBW.

The normal startup mode treats the first 256KB like ROM and the second 
256KB as RAM.  The first 256KB (pseudo-ROM) must be preloaded by the 
ZZRCC CF Loader.  This mode simulates a normal ROM-based RomWBW
startup.

Bank		Contents	Description
----		--------	-----------
0x0		BOOT		Boot Bank (HBIOS image)		+
0x1		IMG0		ROM Loader, Monitor, ROM OSes	|
0x2		IMG1		ROM Applications		| Pseudo-ROM
0x3		IMG2		Reserved			|
0x4-0x7		ROMD		ROM Disk Banks			+
0x8		BIOS		HBIOS Bank (operating)
0x9-0xB		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

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