257 lines
7.9 KiB
C
257 lines
7.9 KiB
C
/*
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
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* spanning the era between 1981 and 1995.
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*
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* Definitions for the network module.
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*
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*
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*
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2017-2019 Fred N. van Kempen.
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*
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* Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the entire
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* above notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names
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* of its contributors may be used to endorse or promote
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* products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef EMU_NETWORK_H
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#define EMU_NETWORK_H
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#include <stdint.h>
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/* Network provider types. */
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#define NET_TYPE_NONE 0 /* use the null network driver */
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#define NET_TYPE_SLIRP 1 /* use the SLiRP port forwarder */
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#define NET_TYPE_PCAP 2 /* use the (Win)Pcap API */
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#define NET_TYPE_VDE 3 /* use the VDE plug API */
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#define NET_MAX_FRAME 1518
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/* Queue size must be a power of 2 */
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#define NET_QUEUE_LEN 16
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#define NET_QUEUE_LEN_MASK (NET_QUEUE_LEN - 1)
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#define NET_QUEUE_COUNT 3
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#define NET_CARD_MAX 4
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#define NET_HOST_INTF_MAX 64
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#define NET_PERIOD_10M 0.8
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#define NET_PERIOD_100M 0.08
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/* Error buffers for network driver init */
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#define NET_DRV_ERRBUF_SIZE 384
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enum {
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NET_LINK_DOWN = (1 << 1),
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NET_LINK_TEMP_DOWN = (1 << 2),
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NET_LINK_10_HD = (1 << 3),
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NET_LINK_10_FD = (1 << 4),
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NET_LINK_100_HD = (1 << 5),
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NET_LINK_100_FD = (1 << 6),
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NET_LINK_1000_HD = (1 << 7),
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NET_LINK_1000_FD = (1 << 8),
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};
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enum {
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NET_NONE = 0,
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NET_INTERNAL
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};
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enum {
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NET_QUEUE_RX = 0,
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NET_QUEUE_TX_VM = 1,
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NET_QUEUE_TX_HOST = 2
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};
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typedef struct netcard_conf_t {
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uint16_t device_num;
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int net_type;
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char host_dev_name[128];
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uint32_t link_state;
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} netcard_conf_t;
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extern netcard_conf_t net_cards_conf[NET_CARD_MAX];
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extern uint16_t net_card_current;
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typedef int (*NETRXCB)(void *, uint8_t *, int);
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typedef int (*NETSETLINKSTATE)(void *, uint32_t link_state);
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typedef struct netpkt {
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uint8_t *data;
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int len;
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} netpkt_t;
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typedef struct netqueue_t {
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netpkt_t packets[NET_QUEUE_LEN];
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int head;
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int tail;
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} netqueue_t;
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typedef struct _netcard_t netcard_t;
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typedef struct netdrv_t {
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void (*notify_in)(void *priv);
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void *(*init)(const netcard_t *card, const uint8_t *mac_addr, void *priv, char *netdrv_errbuf);
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void (*close)(void *priv);
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void *priv;
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} netdrv_t;
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extern const netdrv_t net_pcap_drv;
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extern const netdrv_t net_slirp_drv;
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extern const netdrv_t net_vde_drv;
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extern const netdrv_t net_null_drv;
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struct _netcard_t {
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const device_t *device;
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void *card_drv;
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struct netdrv_t host_drv;
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NETRXCB rx;
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NETSETLINKSTATE set_link_state;
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netqueue_t queues[NET_QUEUE_COUNT];
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netpkt_t queued_pkt;
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mutex_t *tx_mutex;
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mutex_t *rx_mutex;
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pc_timer_t timer;
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uint16_t card_num;
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double byte_period;
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uint32_t led_timer;
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uint32_t led_state;
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uint32_t link_state;
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};
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typedef struct {
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char device[128];
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char description[128];
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} netdev_t;
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typedef struct {
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int has_slirp;
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int has_pcap;
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int has_vde;
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} network_devmap_t;
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#define HAS_NOSLIRP_NET(x) (x.has_pcap || x.has_vde)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Global variables. */
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extern int nic_do_log; // config
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extern network_devmap_t network_devmap;
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extern int network_ndev; // Number of pcap devices
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extern network_devmap_t network_devmap; // Bitmap of available network types
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extern netdev_t network_devs[NET_HOST_INTF_MAX];
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/* Function prototypes. */
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extern void network_init(void);
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extern netcard_t *network_attach(void *card_drv, uint8_t *mac, NETRXCB rx, NETSETLINKSTATE set_link_state);
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extern void netcard_close(netcard_t *card);
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extern void network_close(void);
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extern void network_reset(void);
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extern int network_available(void);
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extern void network_tx(netcard_t *card, uint8_t *, int);
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extern int net_pcap_prepare(netdev_t *);
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extern int net_vde_prepare(void);
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extern void network_connect(int id, int connect);
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extern int network_is_connected(int id);
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extern int network_dev_available(int);
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extern int network_dev_to_id(char *);
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extern int network_card_available(int);
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extern int network_card_has_config(int);
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extern const char *network_card_get_internal_name(int);
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extern int network_card_get_from_internal_name(char *);
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#ifdef EMU_DEVICE_H
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extern const device_t *network_card_getdevice(int);
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#endif
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extern int network_tx_pop(netcard_t *card, netpkt_t *out_pkt);
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extern int network_tx_popv(netcard_t *card, netpkt_t *pkt_vec, int vec_size);
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extern int network_rx_put(netcard_t *card, uint8_t *bufp, int len);
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extern int network_rx_put_pkt(netcard_t *card, netpkt_t *pkt);
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#ifdef EMU_DEVICE_H
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/* 3Com Etherlink */
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extern const device_t threec501_device;
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extern const device_t threec503_device;
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/* Novell NE2000 and compatibles */
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extern const device_t ne1000_device;
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extern const device_t ne1000_compat_device;
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extern const device_t ne2000_device;
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extern const device_t ne2000_compat_device;
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extern const device_t ethernext_mc_device;
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extern const device_t rtl8019as_device;
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extern const device_t de220p_device;
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extern const device_t rtl8029as_device;
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/* AMD PCnet*/
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extern const device_t pcnet_am79c960_device;
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extern const device_t pcnet_am79c960_eb_device;
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extern const device_t pcnet_am79c960_vlb_device;
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extern const device_t pcnet_am79c961_device;
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extern const device_t pcnet_am79c970a_device;
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extern const device_t pcnet_am79c973_device;
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extern const device_t pcnet_am79c973_onboard_device;
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/* PLIP */
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#ifdef EMU_LPT_H
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extern const lpt_device_t lpt_plip_device;
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#endif
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extern const device_t plip_device;
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/* Realtek RTL8139C+ */
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extern const device_t rtl8139c_plus_device;
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/* DEC Tulip */
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extern const device_t dec_tulip_device;
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extern const device_t dec_tulip_21140_device;
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extern const device_t dec_tulip_21140_vpc_device;
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extern const device_t dec_tulip_21040_device;
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/* WD 80x3 */
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extern const device_t wd8003e_device;
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extern const device_t wd8003eb_device;
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extern const device_t wd8013ebt_device;
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extern const device_t wd8003eta_device;
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extern const device_t wd8003ea_device;
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extern const device_t wd8013epa_device;
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /*EMU_NETWORK_H*/
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