Busses
Existing symbols
ISA
PCI
ISAPNP
MCA
TC
PARPORT
HOTPLUG
PCMCIA
CARDBUS
IDE
SCSI
CD_NO_IDESCSI
USB
IEEE1394
ADB
I20
FC4

Missing buses
EISA
SBUS	#Not needed as its own bus because it's derived from SPARC or SUN3X?
NUBUS	#Likewise because it's derived from mac
VLBUS

unless ISA suppress ISAPNP
	vs.
require ISAPNP implies ISA==y

require ISAPNP implies ISA==y
require EISA implies ISA==y
require VLBUS implies ISA==y

unless NET suppress BLK_DEV_NBD

unless ISAPNP suppress NET_SB1000                #sb1000.c calls isapnp functions.
	vs.
unless ISA or ISAPNP suppress NET_SB1000         #but it might be initialized w/ userspace isapnp
	vs.
unless ISA suppress NET_SB1000                   #equiv to the above if "unless ISA suppress ISAPNP" used

unless ISA suppress EL1                           #3c501 source
unless ISA suppress EL2                           #3c503 source
unless ISA suppress ELPLUS                        #3c505 source
unless ISA suppress EL16                          #3c507 source
unless ISA or ISAPNP or EISA or MCA suppress EL3  #3c509 source
unless EISA or PCI or CARDBUS suppress VORTEX     #Vortex help screen
unless ISA or ISAPNP or PCI or VLB suppress LANCE #lance source
unless ISA suppress WD80x3                        #wd80x3
unless ISA suppress ULTRA                         #smc-ultra
unless EISA suppress ULTRA32                      #smc-ultra32

No idea:
unless ?? suppress SGISEEQ                        #request sent to Dave Miller...