src/const.js

/** @define {boolean} */            
var DEBUG = true;

var

/** 
 * TODO: Make this configurable
 * @const 
 */
VGA_MEMORY_SIZE = 128 * 64 * 1024,

/** 
 * @const 
 * @type {number}
 */
memory_size = 1024 * 1024 * 64;

var 

/** @const */ LOG_ALL = -1,
/** @const */ LOG_NONE = 0,

/** @const */ LOG_OTHER =  0x00001,
/** @const */ LOG_CPU =    0x00002,
/** @const */ LOG_FPU =    0x00004,
/** @const */ LOG_MEM =    0x00008,
/** @const */ LOG_DMA =    0x00010,
/** @const */ LOG_IO =     0x00020,
/** @const */ LOG_PS2 =    0x00040,
/** @const */ LOG_PIC =    0x00080,
/** @const */ LOG_VGA =    0x00100,
/** @const */ LOG_PIT =    0x00200,
/** @const */ LOG_MOUSE =  0x00400,
/** @const */ LOG_PCI =    0x00800,
/** @const */ LOG_BIOS =   0x01000,
/** @const */ LOG_CD =     0x02000,
/** @const */ LOG_SERIAL = 0x04000,
/** @const */ LOG_DISK =   0x08000,
/** @const */ LOG_RTC =    0x10000,
/** @const */ LOG_HPET =   0x20000,
/** @const */ LOG_ACPI =   0x40000,
/** @const */ LOG_APIC =   0x80000,



///** @const */ LOG_LEVEL = LOG_OTHER | LOG_PS2 | LOG_BIOS;
///** @const */ LOG_LEVEL = LOG_PS2 | LOG_OTHER | LOG_IO;
///** @const */ LOG_LEVEL = LOG_PS2;
///** @const */ LOG_LEVEL = LOG_OTHER | LOG_CPU | LOG_BIOS;
///** @const */ LOG_LEVEL = LOG_VGA | LOG_IO | LOG_BIOS | LOG_OTHER;
///** @const */ LOG_LEVEL = LOG_FPU | LOG_OTHER;
///** @const */ LOG_LEVEL = LOG_DMA | LOG_DISK | LOG_IO | LOG_PCI;
//** @const */ LOG_LEVEL = LOG_DMA | LOG_DISK | LOG_PCI | LOG_CD | LOG_BIOS;
/** @const */ LOG_LEVEL = LOG_ALL & ~LOG_DMA & ~LOG_PS2 & ~LOG_PIT;
///** @const */ LOG_LEVEL = LOG_SERIAL | LOG_IO;
///** @const */ LOG_LEVEL = LOG_PIT | LOG_RTC;
///** @const */ LOG_LEVEL = 0;


var
/** @const */ TLB_SYSTEM_READ = 1,
/** @const */ TLB_SYSTEM_WRITE = 2,
/** @const */ TLB_USER_READ = 4,
/** @const */ TLB_USER_WRITE = 8;


/** @const */
var ENABLE_HPET = false,
    ENABLE_ACPI = false;

var 


// flags register bitflags
/** @const */ flag_carry = 1,
/** @const */ flag_parity = 4,
/** @const */ flag_adjust = 16,
/** @const */ flag_zero = 64,
/** @const */ flag_sign = 128, 
/** @const */ flag_trap = 256,
/** @const */ flag_interrupt = 512,
/** @const */ flag_direction = 1024,
/** @const */ flag_overflow = 2048,
/** @const */ flag_iopl = 1 << 12 | 1 << 13,
/** @const */ flag_nt = 1 << 14,
/** @const */ flag_rf = 1 << 16,
/** @const */ flag_vm = 1 << 17,
/** @const */ flag_ac = 1 << 18,
/** @const */ flag_vif = 1 << 19,
/** @const */ flag_vip = 1 << 20,
/** @const */ flag_id = 1 << 21,

/** 
 * default values of reserved flags bits
 * @const
 */
flags_default = 1 << 1,

/** 
 * bitmask to select non-reserved flags bits
 * @const
 */
flags_mask = 
    flag_carry | flag_parity | flag_adjust | flag_zero | flag_sign | flag_trap | flag_interrupt |
    flag_direction | flag_overflow | flag_iopl | flag_nt | flag_rf | flag_vm | flag_ac |
    flag_vif | flag_vip | flag_id,


/**
 * all arithmetic flags
 * @const
 */
flags_all = flag_carry | flag_parity | flag_adjust | flag_zero | flag_sign | flag_overflow,



/**
 * opsizes used by get flag functions
 *
 * @const
 */
OPSIZE_8 = 8,
/** @const */
OPSIZE_16 = 16,
/** @const */
OPSIZE_32 = 32,

/** @const */
PSE_ENABLED = 128,

/** @const */ reg_eax = 0,
/** @const */ reg_ecx = 1,
/** @const */ reg_edx = 2,
/** @const */ reg_ebx = 3,
/** @const */ reg_esp = 4,
/** @const */ reg_ebp = 5,
/** @const */ reg_esi = 6,
/** @const */ reg_edi = 7,

/** @const */ reg_ax = 0,
/** @const */ reg_cx = 2,
/** @const */ reg_dx = 4,
/** @const */ reg_bx = 6,
/** @const */ reg_sp = 8,
/** @const */ reg_bp = 10,
/** @const */ reg_si = 12,
/** @const */ reg_di = 14,

/** @const */ reg_al = 0,
/** @const */ reg_cl = 4,
/** @const */ reg_dl = 8,
/** @const */ reg_bl = 12,
/** @const */ reg_ah = 1,
/** @const */ reg_ch = 5,
/** @const */ reg_dh = 9,
/** @const */ reg_bh = 13,


/** @const */ reg_es = 0,
/** @const */ reg_cs = 1,
/** @const */ reg_ss = 2,
/** @const */ reg_ds = 3,
/** @const */ reg_fs = 4,
/** @const */ reg_gs = 5,
/** @const */ reg_noseg = 6,



/** @const */ LOOP_COUNTER = 2001,
/** @const */ TIME_PER_FRAME = 33;


var 
    /** 
     * The minimum number of bytes that can be memory-mapped
     * by one device. 
     *
     * @const 
     */ 
    MMAP_BLOCK_BITS = 14,
    /** @const */
    MMAP_BLOCK_SIZE = 1 << MMAP_BLOCK_BITS;