cartridge.h

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/*
 * Copyright (c) 2022 Adrian "asie" Siekierka
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source distribution.
 */
 
#ifndef __WF_LIBWS_CARTRIDGE_H__
#define __WF_LIBWS_CARTRIDGE_H__
 
#include <stdbool.h>
#include <stdint.h>
#include <wonderful.h>
#include "hardware.h"
#include "util.h"
 
typedef uint8_t ws_bank_t;
 
#define WF_BANK_INDEX(x) (x)
 
#define MEM_RAM ((uint8_t __wf_iram*) 0x00000000)
#define MEM_SRAM ((uint8_t __far*) 0x10000000)
#define MEM_ROM0 ((uint8_t __far*) 0x20000000)
#define MEM_ROM1 ((uint8_t __far*) 0x30000000)
#define MEM_ROM_LINEAR ((uint8_t __far*) 0x40000000)
 
static inline ws_bank_t __ws_bank_save(uint8_t port, ws_bank_t new_bank) {
    asm volatile("" ::: "memory");
    uint8_t old_bank = inportb(port);
    outportb(port, new_bank);
    asm volatile("" ::: "memory");
    return old_bank;
}
 
static inline void __ws_bank_set(uint8_t port, ws_bank_t new_bank) {
    asm volatile("" ::: "memory");
    outportb(port, new_bank);
    asm volatile("" ::: "memory");
}
 
#define ws_bank_ram_save(new_bank) __ws_bank_save(IO_BANK_RAM, (new_bank))
 
#define ws_bank_ram_set(new_bank) __ws_bank_set(IO_BANK_RAM, (new_bank))
#define ws_bank_ram_restore ws_bank_ram_set
 
#define ws_bank_rom0_save(new_bank) __ws_bank_save(IO_BANK_ROM0, (new_bank))
 
#define ws_bank_rom0_set(new_bank) __ws_bank_set(IO_BANK_ROM0, (new_bank))
#define ws_bank_rom0_restore ws_bank_rom0_set
 
#define ws_bank_rom1_save(new_bank) __ws_bank_save(IO_BANK_ROM1, (new_bank))
 
#define ws_bank_rom1_set(new_bank) __ws_bank_set(IO_BANK_ROM1, (new_bank))
#define ws_bank_rom1_restore ws_bank_rom1_set
 
#define ws_bank_rom_linear_save(new_bank) __ws_bank_save(IO_BANK_ROM_LINEAR, (new_bank))
 
#define ws_bank_rom_linear_set(new_bank) __ws_bank_set(IO_BANK_ROM_LINEAR, (new_bank))
#define ws_bank_rom_linear_restore ws_bank_rom_linear_set
 
void ws_cart_gpo_enable(uint8_t id);
 
void ws_cart_gpo_disable(uint8_t id);
 
void ws_cart_gpo_set(uint8_t id, bool val);
 
#endif /* __WF_LIBWS_CARTRIDGE_H__ */