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Diffstat (limited to 'src/mess/machine/nubus_asntmc3b.c')
-rw-r--r--src/mess/machine/nubus_asntmc3b.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/src/mess/machine/nubus_asntmc3b.c b/src/mess/machine/nubus_asntmc3b.c
new file mode 100644
index 00000000000..7bb6977b394
--- /dev/null
+++ b/src/mess/machine/nubus_asntmc3b.c
@@ -0,0 +1,214 @@
+/***************************************************************************
+
+ Asante MC3NB NuBus Ethernet card (DP83902)
+ Apple NuBus Ethernet Card (DP8390)
+
+ Based on National Semiconductor DP8390 family chips
+
+ FssD0000 - 64k RAM buffer (used as DP83902 DMA target)
+ FssE0000 - DP83902 registers
+
+***************************************************************************/
+
+#include "emu.h"
+#include "machine/nubus_asntmc3b.h"
+
+#define MAC8390_ROM_REGION "asntm3b_rom"
+#define MAC8390_839X "dp83902"
+
+static const dp8390_interface dp8390_interface =
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, nubus_mac8390_device, dp_irq_w),
+ DEVCB_NULL,
+ DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, nubus_mac8390_device, dp_mem_read),
+ DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, nubus_mac8390_device, dp_mem_write)
+};
+
+MACHINE_CONFIG_FRAGMENT( asntm3b )
+ MCFG_DP8390D_ADD(MAC8390_839X, dp8390_interface)
+MACHINE_CONFIG_END
+
+ROM_START( asntm3nb )
+ ROM_REGION(0x4000, MAC8390_ROM_REGION, 0)
+ ROM_LOAD( "asante_mc3b.bin", 0x000000, 0x004000, CRC(4f86d451) SHA1(d0a41df667e6b51fbc63f9251d593f4fc49104ba) )
+ROM_END
+
+ROM_START( appleenet )
+ ROM_REGION(0x4000, MAC8390_ROM_REGION, 0)
+ ROM_LOAD( "aenet1", 0x000000, 0x004000, CRC(e3ae8c26) SHA1(01ddc15ee84b17128203cb812f29bac6b20fd642) )
+ROM_END
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type NUBUS_ASNTMC3NB = &device_creator<nubus_asntmc3nb_device>;
+const device_type NUBUS_APPLEENET = &device_creator<nubus_appleenet_device>;
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor nubus_mac8390_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( asntm3b );
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *nubus_mac8390_device::device_rom_region() const
+{
+ return ROM_NAME( asntm3nb );
+}
+
+const rom_entry *nubus_appleenet_device::device_rom_region() const
+{
+ return ROM_NAME( appleenet );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// nubus_mac8390_device - constructor
+//-------------------------------------------------
+
+nubus_mac8390_device::nubus_mac8390_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, NUBUS_ASNTMC3NB, name, tag, owner, clock),
+ device_nubus_card_interface(mconfig, *this),
+ m_dp83902(*this, MAC8390_839X)
+{
+}
+
+nubus_asntmc3nb_device::nubus_asntmc3nb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ nubus_mac8390_device(mconfig, NUBUS_ASNTMC3NB, "Asante MC3NB Ethernet card", tag, owner, clock)
+{
+ m_shortname = "nb_amc3b";
+}
+
+nubus_appleenet_device::nubus_appleenet_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ nubus_mac8390_device(mconfig, NUBUS_APPLEENET, "Apple NuBus Ethernet card", tag, owner, clock)
+{
+ m_shortname = "nb_aenet";
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void nubus_mac8390_device::device_start()
+{
+ UINT32 slotspace;
+ char mac[7];
+ UINT32 num = rand();
+ memset(m_prom, 0x57, 16);
+ sprintf(mac+2, "\x1b%c%c%c", (num >> 16) & 0xff, (num >> 8) & 0xff, num & 0xff);
+ mac[0] = mac[1] = 0; // avoid gcc warning
+ memcpy(m_prom, mac, 6);
+ m_dp83902->set_mac(mac);
+ // set_nubus_device makes m_slot valid
+ set_nubus_device();
+ install_declaration_rom(this, MAC8390_ROM_REGION, true);
+
+ slotspace = get_slotspace();
+
+// printf("[ASNTMC3NB %p] slotspace = %x\n", this, slotspace);
+
+ // TODO: move 24-bit mirroring down into nubus.c
+ UINT32 ofs_24bit = m_slot<<20;
+ m_nubus->install_device(slotspace+0xd0000, slotspace+0xdffff, read8_delegate(FUNC(nubus_mac8390_device::asntm3b_ram_r), this), write8_delegate(FUNC(nubus_mac8390_device::asntm3b_ram_w), this));
+ m_nubus->install_device(slotspace+0xe0000, slotspace+0xe003f, read32_delegate(FUNC(nubus_mac8390_device::en_r), this), write32_delegate(FUNC(nubus_mac8390_device::en_w), this));
+ m_nubus->install_device(slotspace+0xd0000+ofs_24bit, slotspace+0xdffff+ofs_24bit, read8_delegate(FUNC(nubus_mac8390_device::asntm3b_ram_r), this), write8_delegate(FUNC(nubus_mac8390_device::asntm3b_ram_w), this));
+ m_nubus->install_device(slotspace+0xe0000+ofs_24bit, slotspace+0xe003f+ofs_24bit, read32_delegate(FUNC(nubus_mac8390_device::en_r), this), write32_delegate(FUNC(nubus_mac8390_device::en_w), this));
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void nubus_mac8390_device::device_reset()
+{
+ m_dp83902->dp8390_reset(0);
+ m_dp83902->dp8390_cs(0);
+ memcpy(m_prom, m_dp83902->get_mac(), 6);
+}
+
+WRITE8_MEMBER( nubus_mac8390_device::asntm3b_ram_w )
+{
+// printf("MC3NB: CPU wrote %02x to RAM @ %x\n", data, offset);
+ m_ram[offset] = data;
+}
+
+READ8_MEMBER( nubus_mac8390_device::asntm3b_ram_r )
+{
+// printf("MC3NB: CPU read %02x @ RAM %x\n", m_ram[offset], offset);
+ return m_ram[offset];
+}
+
+WRITE32_MEMBER( nubus_mac8390_device::en_w )
+{
+ if (mem_mask == 0xff000000)
+ {
+// printf("%02x to 8390 @ %x\n", data>>24, 0xf-offset);
+ m_dp83902->dp8390_w(space, 0xf-offset, data>>24);
+ }
+ else if (mem_mask == 0xffff0000)
+ {
+ m_dp83902->dp8390_cs(1);
+ m_dp83902->dp8390_w(space, 0xf-offset, data>>16);
+ m_dp83902->dp8390_cs(0);
+ }
+ else
+ {
+ fatalerror("asntmc3nb: write %08x to DP83902 @ %x with unhandled mask %08x (PC=%x)\n", data, offset, mem_mask, cpu_get_pc(&space.device()));
+ }
+}
+
+READ32_MEMBER( nubus_mac8390_device::en_r )
+{
+ if (mem_mask == 0xff000000)
+ {
+ return (m_dp83902->dp8390_r(space, 0xf-offset)<<24);
+ }
+ else if (mem_mask == 0xffff0000)
+ {
+ m_dp83902->dp8390_cs(1);
+ return (m_dp83902->dp8390_r(space, 0xf-offset)<<16);
+ m_dp83902->dp8390_cs(0);
+ }
+ else
+ {
+ fatalerror("asntmc3nb: read DP83902 @ %x with unhandled mask %08x (PC=%x)\n", offset, mem_mask, cpu_get_pc(&space.device()));
+ }
+
+ return 0;
+}
+
+WRITE_LINE_MEMBER( nubus_mac8390_device::dp_irq_w )
+{
+ if (state)
+ {
+ raise_slot_irq();
+ }
+ else
+ {
+ lower_slot_irq();
+ }
+}
+
+READ8_MEMBER( nubus_mac8390_device::dp_mem_read )
+{
+// printf("MC3NB: 8390 read RAM @ %x = %02x\n", offset, m_ram[offset]);
+ return m_ram[offset];
+}
+
+WRITE8_MEMBER( nubus_mac8390_device::dp_mem_write )
+{
+// printf("MC3NB: 8390 wrote %02x to RAM @ %x\n", data, offset);
+ m_ram[offset] = data;
+}