New systems marked not working

------------------------------ Burroughs TD 831 [Wouter's Blog]
2025-04-23 08:49:55 +03:00 · 2023-03-21 18:15:20 +01:00 · 2023-03-21 18:15:20 +01:00 · 7ddab4082b
commit 7ddab4082b
parent 0bd1b70d0e
2 changed files with 138 additions and 0 deletions
--- a/src/mame/burroughs/td831.cpp
+++ b/src/mame/burroughs/td831.cpp
@ -0,0 +1,135 @@
+// license: BSD-3-Clause
+// copyright-holders: Dirk Best
+/***************************************************************************
+
+    Burroughs TD 831 terminal
+
+    Hardware:
+    - M6800
+    - RAM: 4k + 4k (expansion)
+    - ROM: 8x2k (space for a total of 32 ROMs)
+    - EAROM 1400
+    - 5x 6821 PIA
+    - 3x 6850 ACIA
+    - 1843.2 KHz XTAL
+    - 80x25 characters display (maximum)
+    - 5x7 or 7x9 pixels character size (depending on character generator)
+
+    TODO:
+    - Everything
+
+    Notes:
+    - Quickly jumps into an invalid location
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6800/m6800.h"
+#include "machine/6821pia.h"
+#include "machine/6850acia.h"
+#include "machine/er1400.h"
+
+
+namespace {
+
+
+//**************************************************************************
+//  TYPE DEFINITIONS
+//**************************************************************************
+
+class td831_state : public driver_device
+{
+public:
+	td831_state(const machine_config &mconfig, device_type type, const char *tag) :
+		driver_device(mconfig, type, tag),
+		m_maincpu(*this, "maincpu")
+	{
+	}
+
+	void td831(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	required_device<m6800_cpu_device> m_maincpu;
+
+	void mem_map(address_map &map);
+};
+
+
+//**************************************************************************
+//  ADDRESS MAPS
+//**************************************************************************
+
+void td831_state::mem_map(address_map &map)
+{
+	map(0x0000, 0x0fff).ram();
+	map(0x4000, 0x4fff).ram(); // expansion
+	map(0x7f00, 0x7fff).unmaprw(); // pia/acia registers
+	map(0x8000, 0xbfff).rom().region("device", 0);
+	map(0xc000, 0xffff).rom().region("system", 0);
+}
+
+
+//**************************************************************************
+//  INPUT DEFINITIONS
+//**************************************************************************
+
+static INPUT_PORTS_START( td831 )
+INPUT_PORTS_END
+
+
+//**************************************************************************
+//  MACHINE EMULATION
+//**************************************************************************
+
+void td831_state::machine_start()
+{
+}
+
+void td831_state::machine_reset()
+{
+}
+
+
+//**************************************************************************
+//  MACHINE DEFINTIONS
+//**************************************************************************
+
+void td831_state::td831(machine_config &config)
+{
+	M6800(config, m_maincpu, 1000000); // unknown clock
+	m_maincpu->set_addrmap(AS_PROGRAM, &td831_state::mem_map);
+}
+
+
+//**************************************************************************
+//  ROM DEFINITIONS
+//**************************************************************************
+
+ROM_START( td831 )
+	ROM_REGION(0x4000, "device", 0)
+	ROM_LOAD("1.bin", 0x2000, 0x0800, CRC(9d56f6c9) SHA1(ed878441046c94a02f84378ae9a23093e2c97e3e))
+	ROM_LOAD("2.bin", 0x2800, 0x0800, CRC(60d79031) SHA1(53015c39e1f8ea2f26a9a68ab72682e22448752b))
+	ROM_LOAD("3.bin", 0x3000, 0x0800, CRC(fd459a6f) SHA1(bc6fad318884f86bf7e3edb86cb33bdbb54103e5))
+	ROM_LOAD("4.bin", 0x3800, 0x0800, CRC(d7dbab60) SHA1(9893f62aa90b655d9603245abf5aeeb502e71d06))
+
+	ROM_REGION(0x4000, "system", 0)
+	ROM_LOAD("5.bin", 0x2000, 0x0800, CRC(1995bd6c) SHA1(69b18306e4edca7b7ef72c169cf8422b2598581a))
+	ROM_LOAD("6.bin", 0x2800, 0x0800, CRC(faccd4f8) SHA1(b7ea0e88556f332bc28de675cd95caf9eaf0eca0))
+	ROM_LOAD("7.bin", 0x3000, 0x0800, CRC(1412d84a) SHA1(d4f6141322f2020a88ce4c434d9ee6cfa7ac989d))
+	ROM_LOAD("8.bin", 0x3800, 0x0800, CRC(1e3473b9) SHA1(85e370a6b1f6b767a3aed750633359fac984043d))
+ROM_END
+
+
+} // anonymous namespace
+
+
+//**************************************************************************
+//  SYSTEM DRIVERS
+//**************************************************************************
+
+//    YEAR  NAME   PARENT  COMPAT  MACHINE  INPUT  CLASS        INIT        COMPANY      FULLNAME  FLAGS
+COMP( 1976, td831, 0,      0,      td831,   td831, td831_state, empty_init, "Burroughs", "TD 831", MACHINE_IS_SKELETON )
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@ -14801,6 +14801,9 @@ lw700i                          // (c) 1995 Brother
@source:brother/lw840.cpp
 lw840                           // Brother LW-840ic (c) 1997 Brother Industries, Ltd.

+@source:burroughs/td831.cpp
+td831							// (c) 1976 Burroughs
+
@source:camputers/camplynx.cpp
 lynx128k                        //
 lynx48k                         //