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// license:BSD-3-Clause
// copyright-holders:Carl
#include "emu.h"
#include "ne1000.h"
DEFINE_DEVICE_TYPE(NE1000, ne1000_device, "ne1000", "NE1000 Network Adapter")
void ne1000_device::device_add_mconfig(machine_config &config)
{
DP8390D(config, m_dp8390, 0);
m_dp8390->irq_callback().set(FUNC(ne1000_device::ne1000_irq_w));
m_dp8390->mem_read_callback().set(FUNC(ne1000_device::ne1000_mem_read));
m_dp8390->mem_write_callback().set(FUNC(ne1000_device::ne1000_mem_write));
}
ne1000_device::ne1000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, NE1000, tag, owner, clock),
device_isa8_card_interface(mconfig, *this),
m_dp8390(*this, "dp8390d"),
m_irq(0)
{
}
void ne1000_device::device_start() {
char mac[7];
uint32_t num = machine().rand();
memset(m_prom, 0x57, 16);
sprintf(mac+2, "\x1b%c%c%c", (num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff);
mac[0] = 0; mac[1] = 0; // avoid gcc warning
memcpy(m_prom, mac, 6);
m_dp8390->set_mac(mac);
set_isa_device();
m_isa->install_device(0x0300, 0x031f, read8sm_delegate(*this, FUNC(ne1000_device::ne1000_port_r)), write8sm_delegate(*this, FUNC(ne1000_device::ne1000_port_w)));
}
void ne1000_device::device_reset() {
memcpy(m_prom, m_dp8390->get_mac(), 6);
m_irq = ioport("CONFIG")->read() & 3;
}
uint8_t ne1000_device::ne1000_port_r(offs_t offset) {
if(offset < 16) {
return m_dp8390->cs_read(offset);
}
switch(offset) {
case 16:
return m_dp8390->remote_read();
case 31:
m_dp8390->dp8390_reset(CLEAR_LINE);
return 0;
default:
logerror("ne1000: invalid register read %02X\n", offset);
}
return 0;
}
void ne1000_device::ne1000_port_w(offs_t offset, uint8_t data) {
if(offset < 16) {
m_dp8390->cs_write(offset, data);
return;
}
switch(offset) {
case 16:
m_dp8390->remote_write(data);
return;
case 31:
m_dp8390->dp8390_reset(ASSERT_LINE);
return;
default:
logerror("ne1000: invalid register write %02X\n", offset);
}
return;
}
WRITE_LINE_MEMBER(ne1000_device::ne1000_irq_w) {
switch(m_irq) {
case 0:
m_isa->irq2_w(state);
break;
case 1:
m_isa->irq3_w(state);
break;
case 2:
m_isa->irq4_w(state);
break;
case 3:
m_isa->irq5_w(state);
break;
}
}
uint8_t ne1000_device::ne1000_mem_read(offs_t offset) {
offset &= ~0xc000; // verify
if(offset < 16) return m_prom[offset];
if((offset < (8*1024)) || (offset >= (16*1024))) {
logerror("ne1000: invalid memory read %04X\n", offset);
return 0xff;
}
return m_board_ram[offset - (8*1024)];
}
void ne1000_device::ne1000_mem_write(offs_t offset, uint8_t data) {
offset &= ~0xc000; // verify
if((offset < (8*1024)) || (offset >= (16*1024))) {
logerror("ne1000: invalid memory write %04X\n", offset);
return;
}
m_board_ram[offset - (8*1024)] = data;
}
static INPUT_PORTS_START( ne1000 )
PORT_START("CONFIG")
PORT_CONFNAME(0x03, 0x01, "NE1000 IRQ jumper (W12-15)")
PORT_CONFSETTING( 0x00, "IRQ2/9")
PORT_CONFSETTING( 0x01, "IRQ3")
PORT_CONFSETTING( 0x02, "IRQ4")
PORT_CONFSETTING( 0x03, "IRQ5")
//PORT_CONFNAME(0x30, 0x00, "NE1000 IO port jumper (W9-10)")
//PORT_CONFSETTING( 0x00, "300")
//PORT_CONFSETTING( 0x10, "320")
//PORT_CONFSETTING( 0x20, "340")
//PORT_CONFSETTING( 0x30, "360")
INPUT_PORTS_END
ioport_constructor ne1000_device::device_input_ports() const
{
return INPUT_PORTS_NAME(ne1000);
}
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