format  void SPR_2ClrAllChar (void)
 Input  None
 Output  None
 Function value  None
 Function  All character areas are released. 

  format  SprVaddr addr = SPR_2GourTblNoToVram (Uint16 gourTblNo)
 Input  gourTblNo: Gouraud shading table number
 Output  None
 Function value  addr: Relative address in VRAM / 8
 Function  Converts Gouraud shading table number to VRAM address. 

  format  SprVaddr addr = SPR_2LookupTblNoToVram (Uint16 lookupTblNo)
 Input  lookupTblNo: Lookup table number
 Output  None
 Function value  ddr: Relative address in VRAM / 8
 Function  Converts lookup table number to VRAM address. 

  format  SprVaddr addr = SPR_2CharNoToVram (Uint16 charNo)
 Input  charNo: Character number
 Output  None
 Function value  addr: Relative address in VRAM / 8
 Function  Converts a character number to a VRAM address.