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-rw-r--r--src/devices/bus/vic10/exp.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/devices/bus/vic10/exp.c b/src/devices/bus/vic10/exp.c
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+++ b/src/devices/bus/vic10/exp.c
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore VIC-10 Expansion Port emulation
+
+**********************************************************************/
+
+#include "emu.h"
+#include "emuopts.h"
+#include "exp.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type VIC10_EXPANSION_SLOT = &device_creator<vic10_expansion_slot_device>;
+
+
+
+//**************************************************************************
+// DEVICE VIC10_EXPANSION CARD INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// device_vic10_expansion_card_interface - constructor
+//-------------------------------------------------
+
+device_vic10_expansion_card_interface::device_vic10_expansion_card_interface(const machine_config &mconfig, device_t &device)
+ : device_slot_card_interface(mconfig,device),
+ m_lorom(*this, "lorom"),
+ m_exram(*this, "exram"),
+ m_uprom(*this, "uprom")
+{
+ m_slot = dynamic_cast<vic10_expansion_slot_device *>(device.owner());
+}
+
+
+//-------------------------------------------------
+// ~device_vic10_expansion_card_interface - destructor
+//-------------------------------------------------
+
+device_vic10_expansion_card_interface::~device_vic10_expansion_card_interface()
+{
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// vic10_expansion_slot_device - constructor
+//-------------------------------------------------
+
+vic10_expansion_slot_device::vic10_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, VIC10_EXPANSION_SLOT, "VIC-10 expansion port", tag, owner, clock, "vic10_expansion_slot", __FILE__),
+ device_slot_interface(mconfig, *this),
+ device_image_interface(mconfig, *this),
+ m_write_irq(*this),
+ m_write_res(*this),
+ m_write_cnt(*this),
+ m_write_sp(*this)
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void vic10_expansion_slot_device::device_start()
+{
+ m_card = dynamic_cast<device_vic10_expansion_card_interface *>(get_card_device());
+
+ // resolve callbacks
+ m_write_irq.resolve_safe();
+ m_write_res.resolve_safe();
+ m_write_cnt.resolve_safe();
+ m_write_sp.resolve_safe();
+
+ // inherit bus clock
+ if (clock() == 0)
+ {
+ vic10_expansion_slot_device *root = machine().device<vic10_expansion_slot_device>(VIC10_EXPANSION_SLOT_TAG);
+ assert(root);
+ set_unscaled_clock(root->clock());
+ }
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void vic10_expansion_slot_device::device_reset()
+{
+ if (get_card_device())
+ {
+ get_card_device()->reset();
+ }
+}
+
+
+//-------------------------------------------------
+// call_load -
+//-------------------------------------------------
+
+bool vic10_expansion_slot_device::call_load()
+{
+ if (m_card)
+ {
+ size_t size = 0;
+
+ if (software_entry() == NULL)
+ {
+ size = length();
+
+ if (!core_stricmp(filetype(), "80"))
+ {
+ fread(m_card->m_lorom, 0x2000);
+
+ if (size == 0x4000)
+ {
+ fread(m_card->m_uprom, 0x2000);
+ }
+ }
+ else if (!core_stricmp(filetype(), "e0"))
+ {
+ fread(m_card->m_uprom, size);
+ }
+ else if (!core_stricmp(filetype(), "crt"))
+ {
+ size_t roml_size = 0;
+ size_t romh_size = 0;
+ int exrom = 1;
+ int game = 1;
+
+ if (cbm_crt_read_header(m_file, &roml_size, &romh_size, &exrom, &game))
+ {
+ UINT8 *roml = NULL;
+ UINT8 *romh = NULL;
+
+ m_card->m_lorom.allocate(roml_size);
+ m_card->m_uprom.allocate(romh_size);
+
+ if (roml_size) roml = m_card->m_lorom;
+ if (romh_size) romh = m_card->m_lorom;
+
+ cbm_crt_read_data(m_file, roml, romh);
+ }
+ }
+ }
+ else
+ {
+ load_software_region("lorom", m_card->m_lorom);
+ load_software_region("exram", m_card->m_exram);
+ load_software_region("uprom", m_card->m_uprom);
+ }
+ }
+
+ return IMAGE_INIT_PASS;
+}
+
+
+//-------------------------------------------------
+// call_softlist_load -
+//-------------------------------------------------
+
+bool vic10_expansion_slot_device::call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry)
+{
+ load_software_part_region(*this, swlist, swname, start_entry);
+
+ return true;
+}
+
+
+//-------------------------------------------------
+// get_default_card_software -
+//-------------------------------------------------
+
+void vic10_expansion_slot_device::get_default_card_software(std::string &result)
+{
+ if (open_image_file(mconfig().options()))
+ {
+ if (!core_stricmp(filetype(), "crt"))
+ {
+ cbm_crt_get_card(result, m_file);
+ return;
+ }
+
+ clear();
+ }
+
+ software_get_default_slot(result, "standard");
+}
+
+
+//-------------------------------------------------
+// cd_r - cartridge data read
+//-------------------------------------------------
+
+UINT8 vic10_expansion_slot_device::cd_r(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram)
+{
+ if (m_card != NULL)
+ {
+ data = m_card->vic10_cd_r(space, offset, data, lorom, uprom, exram);
+ }
+
+ return data;
+}
+
+
+//-------------------------------------------------
+// cd_w - cartridge data write
+//-------------------------------------------------
+
+void vic10_expansion_slot_device::cd_w(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram)
+{
+ if (m_card != NULL)
+ {
+ m_card->vic10_cd_w(space, offset, data, lorom, uprom, exram);
+ }
+}
+
+READ_LINE_MEMBER( vic10_expansion_slot_device::p0_r ) { int state = 0; if (m_card != NULL) state = m_card->vic10_p0_r(); return state; }
+WRITE_LINE_MEMBER( vic10_expansion_slot_device::p0_w ) { if (m_card != NULL) m_card->vic10_p0_w(state); }
+
+
+//-------------------------------------------------
+// SLOT_INTERFACE( vic10_expansion_cards )
+//-------------------------------------------------
+
+// slot devices
+#include "std.h"
+
+SLOT_INTERFACE_START( vic10_expansion_cards )
+ // the following need ROMs from the software list
+ SLOT_INTERFACE_INTERNAL("standard", VIC10_STD)
+SLOT_INTERFACE_END