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-rw-r--r--src/mess/machine/vp575.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/src/mess/machine/vp575.c b/src/mess/machine/vp575.c
new file mode 100644
index 00000000000..818adb6388b
--- /dev/null
+++ b/src/mess/machine/vp575.c
@@ -0,0 +1,352 @@
+/**********************************************************************
+
+ RCA VIP Expansion Board VP-575 emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#include "vp575.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type VP575 = &device_creator<vp575_device>;
+
+
+//-------------------------------------------------
+// VIP_EXPANSION_INTERFACE( expansion_intf )
+//-------------------------------------------------
+
+void vp575_device::update_interrupts()
+{
+ int interrupt = CLEAR_LINE;
+ int dma_out = CLEAR_LINE;
+ int dma_in = CLEAR_LINE;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ interrupt |= m_int[i];
+ dma_out |= m_dma_out[i];
+ dma_in |= m_dma_in[i];
+ }
+
+ m_slot->interrupt_w(interrupt);
+ m_slot->dma_out_w(dma_out);
+ m_slot->dma_in_w(dma_in);
+}
+
+WRITE_LINE_MEMBER( vp575_device::exp1_int_w ) { m_int[0] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp2_int_w ) { m_int[1] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp3_int_w ) { m_int[2] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp4_int_w ) { m_int[3] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp5_int_w ) { m_int[4] = state; update_interrupts(); }
+
+WRITE_LINE_MEMBER( vp575_device::exp1_dma_out_w ) { m_dma_out[0] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp2_dma_out_w ) { m_dma_out[1] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp3_dma_out_w ) { m_dma_out[2] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp4_dma_out_w ) { m_dma_out[3] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp5_dma_out_w ) { m_dma_out[4] = state; update_interrupts(); }
+
+WRITE_LINE_MEMBER( vp575_device::exp1_dma_in_w ) { m_dma_in[0] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp2_dma_in_w ) { m_dma_in[1] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp3_dma_in_w ) { m_dma_in[2] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp4_dma_in_w ) { m_dma_in[3] = state; update_interrupts(); }
+WRITE_LINE_MEMBER( vp575_device::exp5_dma_in_w ) { m_dma_in[4] = state; update_interrupts(); }
+
+static VIP_EXPANSION_INTERFACE( expansion1_intf )
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp1_int_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp1_dma_out_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp1_dma_in_w)
+};
+
+static VIP_EXPANSION_INTERFACE( expansion2_intf )
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp2_int_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp2_dma_out_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp2_dma_in_w)
+};
+
+static VIP_EXPANSION_INTERFACE( expansion3_intf )
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp3_int_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp3_dma_out_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp3_dma_in_w)
+};
+
+static VIP_EXPANSION_INTERFACE( expansion4_intf )
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp4_int_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp4_dma_out_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp4_dma_in_w)
+};
+
+static VIP_EXPANSION_INTERFACE( expansion5_intf )
+{
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp5_int_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp5_dma_out_w),
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, vp575_device, exp5_dma_in_w)
+};
+
+
+//-------------------------------------------------
+// MACHINE_CONFIG_FRAGMENT( vp575 )
+//-------------------------------------------------
+
+static MACHINE_CONFIG_FRAGMENT( vp575 )
+ MCFG_VIP_EXPANSION_SLOT_ADD("exp1", XTAL_3_52128MHz/2, expansion1_intf, vip_expansion_cards, NULL, NULL)
+ MCFG_VIP_EXPANSION_SLOT_ADD("exp2", XTAL_3_52128MHz/2, expansion2_intf, vip_expansion_cards, NULL, NULL)
+ MCFG_VIP_EXPANSION_SLOT_ADD("exp3", XTAL_3_52128MHz/2, expansion3_intf, vip_expansion_cards, NULL, NULL)
+ MCFG_VIP_EXPANSION_SLOT_ADD("exp4", XTAL_3_52128MHz/2, expansion4_intf, vip_expansion_cards, NULL, NULL)
+ MCFG_VIP_EXPANSION_SLOT_ADD("exp5", XTAL_3_52128MHz/2, expansion5_intf, vip_expansion_cards, NULL, NULL)
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor vp575_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( vp575 );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// vp575_device - constructor
+//-------------------------------------------------
+
+vp575_device::vp575_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, VP575, "VP575", tag, owner, clock),
+ device_vip_expansion_card_interface(mconfig, *this)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_int[i] = CLEAR_LINE;
+ m_dma_out[i] = CLEAR_LINE;
+ m_dma_in[i] = CLEAR_LINE;
+ }
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void vp575_device::device_start()
+{
+ // find devices
+ m_expansion_slot[0] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp1"));
+ m_expansion_slot[1] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp2"));
+ m_expansion_slot[2] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp3"));
+ m_expansion_slot[3] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp4"));
+ m_expansion_slot[4] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp5"));
+}
+
+
+//-------------------------------------------------
+// vip_program_r - program read
+//-------------------------------------------------
+
+UINT8 vp575_device::vip_program_r(address_space &space, offs_t offset, int cs, int cdef, int *minh)
+{
+ UINT8 data = 0xff;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ data &= m_expansion_slot[i]->program_r(space, offset, cs, cdef, minh);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// vip_program_w - program write
+//-------------------------------------------------
+
+void vp575_device::vip_program_w(address_space &space, offs_t offset, UINT8 data, int cdef, int *minh)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->program_w(space, offset, data, cdef, minh);
+ }
+}
+
+
+//-------------------------------------------------
+// vip_io_r - I/O read
+//-------------------------------------------------
+
+UINT8 vp575_device::vip_io_r(address_space &space, offs_t offset)
+{
+ UINT8 data = 0xff;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ data &= m_expansion_slot[i]->io_r(space, offset);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// vip_io_w - I/O write
+//-------------------------------------------------
+
+void vp575_device::vip_io_w(address_space &space, offs_t offset, UINT8 data)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->io_w(space, offset, data);
+ }
+}
+
+
+//-------------------------------------------------
+// vip_dma_r - DMA read
+//-------------------------------------------------
+
+UINT8 vp575_device::vip_dma_r(address_space &space, offs_t offset)
+{
+ UINT8 data = 0xff;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ data &= m_expansion_slot[i]->dma_r(space, offset);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// vip_dma_w - DMA write
+//-------------------------------------------------
+
+void vp575_device::vip_dma_w(address_space &space, offs_t offset, UINT8 data)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->dma_w(space, offset, data);
+ }
+}
+
+
+//-------------------------------------------------
+// vip_screen_update - screen update
+//-------------------------------------------------
+
+UINT32 vp575_device::vip_screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ UINT32 data = 0;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ data |= m_expansion_slot[i]->screen_update(screen, bitmap, cliprect);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// vip_ef1_r - EF1 flag read
+//-------------------------------------------------
+
+int vp575_device::vip_ef1_r()
+{
+ int state = CLEAR_LINE;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ state |= m_expansion_slot[i]->ef1_r();
+ }
+
+ return state;
+}
+
+
+//-------------------------------------------------
+// vip_ef3_r - EF3 flag read
+//-------------------------------------------------
+
+int vp575_device::vip_ef3_r()
+{
+ int state = CLEAR_LINE;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ state |= m_expansion_slot[i]->ef3_r();
+ }
+
+ return state;
+}
+
+
+//-------------------------------------------------
+// vip_ef4_r - EF4 flag read
+//-------------------------------------------------
+
+int vp575_device::vip_ef4_r()
+{
+ int state = CLEAR_LINE;
+
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ state |= m_expansion_slot[i]->ef4_r();
+ }
+
+ return state;
+}
+
+
+//-------------------------------------------------
+// vip_sc_w - status code write
+//-------------------------------------------------
+
+void vp575_device::vip_sc_w(int data)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->sc_w(data);
+ }
+}
+
+
+//-------------------------------------------------
+// vip_q_w - Q write
+//-------------------------------------------------
+
+void vp575_device::vip_q_w(int state)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->q_w(state);
+ }
+}
+
+
+//-------------------------------------------------
+// vip_run_w - RUN write
+//-------------------------------------------------
+
+void vp575_device::vip_run_w(int state)
+{
+ for (int i = 0; i < MAX_SLOTS; i++)
+ {
+ m_expansion_slot[i]->run_w(state);
+ }
+}