pc-engine(tgfx16) memory

[pc-engine(internal)]
  00-F6 external bus
  F7    battery backup ram
  F8    ram
  FF    I/O area

[pc-engine SGX(internal)]
  00-F6 external bus
  F7    battery backup ram
  F8    ram
  F9-FB sgx-ram
  FF    I/O area

[Hu-card(normal)]
  00-F6 rom(repeat)

[Hu-card(3Mbit)]
  0x,8x rom 0x
  1x,9x rom 1x
  2x,Ax rom 0x
  3x,Bx rom 2x
  4x,Cx rom 2x
  5x,Dx rom 1x
  6x,Ex rom 0x
  7x    rom 2x
  Fx-F6 rom 2x

[Street fighter 2 champion edition]
  00-3f rom
  40-7f banked rom

[Populous]
  00-?? ROM
  40-43 POPULOUS ram

[CD-ROM^2 system]
  00-?? BIOS
  80-87 CD-ROM^2 ram

[SUPER CD-ROM^2 system]
  00-?? BIOS
  78-87 SUPER CD-ROM^2 ram

[ARCADE CARD]
  00-?? BIOS
  68-87 ARCADE CARD ram