/*
 *	Copyright (c) 2024 Scott Duensing, scott@kangaroopunch.com
 *
 *	Permission is hereby granted, free of charge, to any person obtaining a copy
 *	of this software and associated documentation files (the "Software"), to deal
 *	in the Software without restriction, including without limitation the rights
 *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *	copies of the Software, and to permit persons to whom the Software is
 *	furnished to do so, subject to the following conditions:
 *
 *	The above copyright notice and this permission notice shall be included in
 *	all copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *	SOFTWARE.
 */


#ifndef F256_H
#define F256_H


#ifdef __cplusplus
extern "C"
{
#endif


#include <stdlib.h>
#include "stddclmr.h"

#include "api.h"

#include "f256_dma.h"
#include "f256_intmath.h"
#include "f256_irq.h"
#include "f256jr.h"
#include "f256_rtc.h"
#include "f256_sprites.h"
#include "f256_tiles.h"
#include "f256_timers.h"
#include "f256_via.h"
#include "f256_xymath.h"


typedef unsigned char byte;
typedef unsigned char bool;


#define true   1
#define false  0


// Our stuff.
#define SWAP_SLOT  MMU_MEM_BANK_5

// This is an attempt to allow us to free up slot 5 and use slot 6 for paging
// RAM in and out.  ***TODO*** Currently, it does not work.
#if SWAP_SLOT == MMU_MEM_BANK_6

#define SWAP_IO_SETUP() \
	byte sios_mmu = PEEK(MMU_IO_CTRL); \
	byte sios_ram = PEEK(MMU_MEM_BANK_6); \
	({ \
		asm("sei"); \
		POKE(MMU_IO_CTRL, 4); \
	})

#define SWAP_IO_SHUTDOWN() ({ \
	POKE(MMU_MEM_BANK_6, sios_ram); \
	POKE(MMU_IO_CTRL, sios_mmu); \
	asm("cli"); \
})

#elif SWAP_SLOT == MMU_MEM_BANK_7

#define SWAP_IO_SETUP()     asm("sei");
#define SWAP_IO_SHUTDOWN()  asm("cli");

#else

#define SWAP_IO_SETUP()
#define SWAP_IO_SHUTDOWN()

#endif

#define SWAP_ADDR  ((uint16_t)(SWAP_SLOT - MMU_MEM_BANK_0) * (uint16_t)0x2000)


// Things not in the Merlin defs.
#define TEXT_MATRIX  0xc000  // I/O Page 2

#define RAST_ROW_L   0xd01a
#define RAST_ROW_H   0xd01b

#define VKY_TS0_SQUARE  (VKY_TS0_ADDR_H+1)
#define VKY_TS1_SQUARE  (VKY_TS1_ADDR_H+1)
#define VKY_TS2_SQUARE  (VKY_TS2_ADDR_H+1)
#define VKY_TS3_SQUARE  (VKY_TS3_ADDR_H+1)
#define VKY_TS4_SQUARE  (VKY_TS4_ADDR_H+1)
#define VKY_TS5_SQUARE  (VKY_TS5_ADDR_H+1)
#define VKY_TS6_SQUARE  (VKY_TS6_ADDR_H+1)
#define VKY_TS7_SQUARE  (VKY_TS7_ADDR_H+1)

#define JOY_UP         1
#define JOY_DOWN       2
#define JOY_LEFT       4
#define JOY_RIGHT      8
#define JOY_BUTTON_1  16
#define JOY_BUTTON_2  32
#define JOY_BUTTON_3  64


typedef struct colorS {
	byte r;
	byte g;
	byte b;
} colorT;


// Single-byte
#define PEEK(addy)         ((byte)*(volatile byte *)(addy))
#define POKE(addy, value)  (*(volatile byte *)(addy) = (value))

// Word (two bytes)
#define PEEKW(addy)        ((uint16_t)*(volatile uint16_t *)(addy))
#define POKEW(addy, value) (*(volatile uint16_t *)(addy) = (value))

// Address (three bytes)
//#define PEEKA
#define POKEA(addy, value) 	POKE(addy, value & 0xFF); POKE(addy + 1, (value >> 8) & 0xFF); POKE(addy + 2, (value >> 16) & 0xFF)

// Double-word (four bytes)
#define PEEKD(addy)        ((uint32_t)*(volatile uint32_t *)(addy))
#define POKED(addy,value)  (*(volatile uint32_t *)(addy) = (value))

// Bit fun.
#define LOW_BYTE(v)         ((byte)(x))
#define HIGH_BYTE(v)        ((byte)(((uint16_t)(x)) >> 8))
#define SWAP_NIBBLES(x)     ((x & 0x0F) << 4 | (x & 0xF0) >> 4)
#define CHECK_BIT(x, pos)   (x & (1UL << pos))
#define TOGGLE_BIT(x, pos)  (x ^= (1U << pos))
#define CLEAR_BIT(x, pos)   (x &= (~(1U << pos)))
#define SET_BIT(x, pos)     (x |= (1U << pos))


void     f256Init(void);
byte     FAR_PEEK(uint32_t address);
void     FAR_POKE(uint32_t address, byte value);


#include "kernel.h"
#include "dma.h"
#include "math.h"
#include "random.h"
#include "text.h"
#include "bitmap.h"
#include "tile.h"
#include "graphics.h"
#include "sprite.h"


#ifdef __cplusplus
}
#endif


#endif // F256_H