ipc: Implement differences between IPB and IPC

* Use correct clock rates for each board (4.0MHz for IPC, 2.6MHz for IPB)
* Make IPB's CPU a 8080A
* Remove bogus ROM range between 0xF000 and 0xF7FF
* Correct board full names and release years
* Only map 32KiB RAM on IPB (IPC has 64KiB, partially shadowed by ROM)

Author: Googulator

src/mame/intel/ipc.cpp

@@ -61,19 +61,30 @@ class ipc_state : public driver_device
 	void ipc(machine_config &config);
 
 private:
+	void board_common(machine_config &config);
 	void io_map(address_map &map) ATTR_COLD;
-	void mem_map(address_map &map) ATTR_COLD;
+	void ipb_mem_map(address_map &map) ATTR_COLD;
+	void ipc_mem_map(address_map &map) ATTR_COLD;
 
 	virtual void machine_reset() override ATTR_COLD;
 	required_device<cpu_device> m_maincpu;
 };
 
 
-void ipc_state::mem_map(address_map &map)
+void ipc_state::ipb_mem_map(address_map &map)
+{
+	map.unmap_value_high();
+	map(0x0000, 0x7fff).ram();
+	map(0xe800, 0xe7ff).rom().region("roms", 0);
+	map(0xf800, 0xffff).rom().region("roms", 0x800);
+}
+
+
+void ipc_state::ipc_mem_map(address_map &map)
 {
 	map.unmap_value_high();
 	map(0x0000, 0xdfff).ram();
-	map(0xe800, 0xefff).rom().region("roms", 0);
+	map(0xe800, 0xe7ff).rom().region("roms", 0);
 	map(0xf800, 0xffff).rom().region("roms", 0x800);
 }
 
@@ -100,10 +111,25 @@ void ipc_state::machine_reset()
 void ipc_state::ipc(machine_config &config)
 {
 	/* basic machine hardware */
-	I8085A(config, m_maincpu, XTAL(19'660'800) / 4);
-	m_maincpu->set_addrmap(AS_PROGRAM, &ipc_state::mem_map);
+	I8085A(config, m_maincpu, XTAL(8'000'000) / 2);
+	m_maincpu->set_addrmap(AS_PROGRAM, &ipc_state::ipc_mem_map);
 	m_maincpu->set_addrmap(AS_IO, &ipc_state::io_map);
+	board_common(config);
+}
+
 
+void ipc_state::ipb(machine_config &config)
+{
+	/* basic machine hardware */
+	I8080A(config, m_maincpu, XTAL(23'400'000) / 9);
+	m_maincpu->set_addrmap(AS_PROGRAM, &ipc_state::ipb_mem_map);
+	m_maincpu->set_addrmap(AS_IO, &ipc_state::io_map);
+	board_common(config);
+}
+
+
+void ipc_state::board_common(machine_config &config)
+{
 	pit8253_device &pit(PIT8253(config, "pit", 0));
 	pit.set_clk<0>(XTAL(19'660'800) / 16);
 	pit.set_clk<1>(XTAL(19'660'800) / 16);
@@ -151,6 +177,6 @@ ROM_END
 
 /* Driver */
 
-/*    YEAR  NAME  PARENT  COMPAT  MACHINE  INPUT  CLASS      INIT        COMPANY  FULLNAME  FLAGS */
-COMP( 19??, ipb,  0,      0,      ipc,     ipc,   ipc_state, empty_init, "Intel", "iPB",    MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
-COMP( 19??, ipc,  ipb,    0,      ipc,     ipc,   ipc_state, empty_init, "Intel", "iPC",    MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
+/*    YEAR  NAME  PARENT  COMPAT  MACHINE  INPUT  CLASS      INIT        COMPANY  FULLNAME                         FLAGS */
+COMP( 1977, ipb,  0,      0,      ipb,     ipc,   ipc_state, empty_init, "Intel", "Integrated Processor Board",    MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
+COMP( 1979, ipc,  ipb,    0,      ipc,     ipc,   ipc_state, empty_init, "Intel", "Integrated Processor Card",     MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )