mirror of https://github.com/digarok/gsplus.git
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/*
|
|
GSPLUS - Advanced Apple IIGS Emulator Environment
|
|
Based on the KEGS emulator written by Kent Dickey
|
|
See COPYRIGHT.txt for Copyright information
|
|
See LICENSE.txt for license (GPL v2)
|
|
*/
|
|
|
|
/* Ethernet addresses are 6 bytes */
|
|
#define ETHER_ADDR_LEN 6
|
|
|
|
static const word16 ETHER_MAX_SIZE = 0x5DC;
|
|
static const word16 ETHER_MIN_SIZE = 60;
|
|
static const byte SNAP_DSAP = 0xAA;
|
|
static const byte SNAP_SSAP = 0xAA;
|
|
static const byte SNAP_CONTROL = 0x03;
|
|
|
|
#define OUI_APPLETALK_1 0x08
|
|
#define OUI_APPLETALK_2 0x00
|
|
#define OUI_APPLETALK_3 0x07
|
|
#define TYPE_APPLETALK_1 0x80
|
|
#define TYPE_APPLETALK_2 0x9B
|
|
|
|
#define OUI_AARP_1 0x00
|
|
#define OUI_AARP_2 0x00
|
|
#define OUI_AARP_3 0x00
|
|
#define TYPE_AARP_1 0x80
|
|
#define TYPE_AARP_2 0xF3
|
|
|
|
static const byte AARP_HARDWARE_ETHER = 0x01;
|
|
static const word16 AARP_PROTOCOL_TYPE = 0x809B;
|
|
static const byte AARP_HW_ADDR_LEN = 6;
|
|
static const byte AARP_PROTOCOL_ADDR_LEN = 4;
|
|
enum AARP_FUNCTION
|
|
{
|
|
AARP_FUNCTION_REQUEST = 0x01,
|
|
AARP_FUNCTION_RESPONSE = 0x02,
|
|
AARP_FUNCTION_PROBE = 0x03
|
|
};
|
|
|
|
// reference C-4
|
|
static const long AARP_PROBE_INTERVAL = 200; /* milliseconds */
|
|
static const unsigned int AARP_PROBE_COUNT = 10;
|
|
|
|
// reference 2-9 and 3-9, optional and at developer discretion
|
|
static const long AARP_REQUEST_INTERVAL = 200; /* milliseconds */
|
|
static const unsigned int AARP_REQUEST_COUNT = 10;
|
|
|
|
#pragma pack(push, 1)
|
|
struct ether_addr_t
|
|
{
|
|
byte mac[ETHER_ADDR_LEN];
|
|
};
|
|
|
|
/* Ethernet 802.2/802.3/SNAP header */
|
|
struct ethernet_header_t
|
|
{
|
|
// 802.3 header
|
|
struct ether_addr_t dest;
|
|
struct ether_addr_t source;
|
|
word16 length;
|
|
};
|
|
|
|
struct snap_discriminator_t
|
|
{
|
|
byte oui[3];
|
|
byte type[2];
|
|
};
|
|
|
|
struct snap_header_t
|
|
{
|
|
// 802.2 header
|
|
byte dsap;
|
|
byte ssap;
|
|
byte control;
|
|
|
|
// SNAP header
|
|
struct snap_discriminator_t discriminator;
|
|
};
|
|
|
|
struct protocol_addr_t
|
|
{
|
|
byte zero; // Reference C-4 and 3-11: The protocol address is four bytes with the high byte zero.
|
|
struct at_addr_t addr;
|
|
};
|
|
|
|
struct aarp_header_t
|
|
{
|
|
word16 hardware_type;
|
|
word16 protocol_type;
|
|
byte hw_addr_len;
|
|
byte protocol_addr_len;
|
|
word16 function;
|
|
struct ether_addr_t source_hw_addr;
|
|
struct protocol_addr_t source_proto_addr;
|
|
struct ether_addr_t dest_hw_addr;
|
|
struct protocol_addr_t dest_proto_addr;
|
|
};
|
|
#pragma pack(pop)
|
|
|
|
static const struct ether_addr_t HW_APPLETALK_BROADCAST = {{ 0x09, 0x00, 0x07, 0xff, 0xff, 0xff }};
|
|
static const struct ether_addr_t HW_LOCAL_DEFAULT = {{0x02 /* unicast, locally administered */, 'A', '2', 'G', 'S', 0x00}};
|
|
//static const struct ether_addr_t HW_LOCAL = {{ 0x02 /* unicast, locally administered */, 0x00, 0x4c, 0x4f, 0x4f, 0x50 }};
|
|
static const struct ether_addr_t HW_ZERO = { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } };
|
|
static const struct snap_discriminator_t SNAP_APPLETALK = {{ OUI_APPLETALK_1, OUI_APPLETALK_2, OUI_APPLETALK_3}, {TYPE_APPLETALK_1, TYPE_APPLETALK_2 }};
|
|
static const struct snap_discriminator_t SNAP_AARP = {{ OUI_AARP_1, OUI_AARP_2, OUI_AARP_3}, {TYPE_AARP_1, TYPE_AARP_2 }};
|