src/mmc/mmc3.h

   1 ;
   2 ;    Copyright (C) 2004, 2005 Kent Hansen.
   3 ;
   4 ;    This file is part of Neotoxin.
   5 ;
   6 ;    Neotoxin is free software; you can redistribute it and/or modify
   7 ;    it under the terms of the GNU General Public License as published by
   8 ;    the Free Software Foundation; either version 2 of the License, or
   9 ;    (at your option) any later version.
  10 ;
  11 ;    Neotoxin is distributed in the hope that it will be useful,
  12 ;    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 ;    GNU General Public License for more details.
  15 ;
  16 ;    You should have received a copy of the GNU General Public License
  17 ;    along with this program; if not, write to the Free Software
  18 ;    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 ;
  20
  21 .ifndef MMC3_H
  22 .define MMC3_H
  23
  24 MMC3_CTRL_REG           .equ    $8000
  25 MMC3_PAGE_REG           .equ    $8001
  26 MMC3_MIRROR_REG         .equ    $A000
  27 MMC3_SRAM_REG           .equ    $A001
  28 MMC3_IRQ_COUNTER_REG    .equ    $C000
  29 MMC3_IRQ_LATCH_REG      .equ    $C001
  30 MMC3_IRQ_DISABLE_REG    .equ    $E000
  31 MMC3_IRQ_ENABLE_REG     .equ    $E001
  32
  33 MMC3_MIRROR_V   .equ    0
  34 MMC3_MIRROR_H   .equ    1
  35
  36 MMC3_SRAM_DISABLE   .equ 0
  37 MMC3_SRAM_ENABLE    .equ 1
  38
  39 ; Exported symbols.
  40 .extrn reset_bank:label
  41 .extrn set_bank:label
  42 .extrn swap_bank:label
  43
  44 .extrn irq_count:byte
  45 .extrn chr_banks:byte
  46 .extrn chr_addr_toggle:byte
  47 .extrn current_bank:byte
  48
  49 .endif  ; !MMC3_H