Skeleton driver for 1995 Accexx 28.8 modem started

2025-04-20 15:32:45 +03:00 · 2016-10-12 13:34:23 +02:00 · 2016-10-12 13:34:23 +02:00 · 4ccf49d19c
commit 4ccf49d19c
parent 3a0eabdd4e
2 changed files with 98 additions and 0 deletions
--- a/src/mame/drivers/accexx.cpp
+++ b/src/mame/drivers/accexx.cpp
@ -0,0 +1,95 @@
+// license:BSD-3-Clause
+// copyright-holders:Joakim Larsson Edstrom
+/*
+
+ This is a driver for the Accexx 28.8kbps modem containing the following chips
+
+ U1-U3   JRC 4558D Dual op amps
+ U4      SN74LS374N
+ U5      SN74LS04N
+ U7      Rockwell RC288DPi integrated modem chip marked Mexico (40.320MHz TXC crystal Y1 nearby)
+ U8      HD74LS153P
+ U9      SN75C189N
+ U10,U12 SN75C188N
+ U11     HD74LS244P
+ U13     SN74LS374N
+ U14     Winbond W78C31B which is a 8031 derivate (45.342720MHz TXC crystal Y2 nearby)
+ U15     SN74LS138N (inside the socket of U14)
+ U16     Macronix MX27C512 64KB EPROM
+ U17     HD74LS32P (inside the socket of U16)
+ U18     LM386N
+ U19     CSI CAT93C46P 1KB eeproom
+ U20     Winbond W24257 32KB static RAM
+ U21     SN74LS373N
+ LED1-11 Front leds
+ SP1     Speaker
+ SW1     On/Off switch
+
+ +------------------------------------------------------+
+ |                                                      |
+ |    U1    U2    U3                                PHONE
+ |      U4      U5                                      |
+ |LED1                                               LINE
+ |LED2                                                  = R
+ |LED3           U7         U8             U9      U10  D S
+ |LED4    Y1                U11     SP1                 2 2
+ |LED5                      U13                    U12  5 3
+ |LED6                                                  = 2
+ |LED7      U14           U16       U18                 |
+ |LED8                                                 PWR
+ |LED9-11                 U20       U21                SW1
+ +------------------------------------------------------+
+
+
+
+ The U16 EPROM contains the following string
+
+  COPYWRITE BY TSAI CHIH-HWA
+
+*/
+
+#include "emu.h"
+#include "cpu/mcs51/mcs51.h"
+
+class accexx_state : public driver_device
+{
+public:
+	accexx_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		,m_maincpu(*this, "maincpu")
+	{ }
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+	required_device<cpu_device> m_maincpu;
+};
+
+static ADDRESS_MAP_START( accexx_map, AS_PROGRAM, 8, accexx_state )
+	AM_RANGE(0x0000, 0x7fff) AM_ROM
+ADDRESS_MAP_END
+
+static INPUT_PORTS_START( accexx )
+INPUT_PORTS_END
+
+void accexx_state::machine_start()
+{
+}
+
+void accexx_state::machine_reset()
+{
+}
+
+#define Y1_CLOCK 40320000
+#define Y2_CLOCK 45342720
+static MACHINE_CONFIG_START( accexx, accexx_state )
+
+	/* basic machine hardware */
+	MCFG_CPU_ADD("maincpu", I80C31, Y2_CLOCK)
+	MCFG_CPU_PROGRAM_MAP(accexx_map)
+MACHINE_CONFIG_END
+
+ROM_START( accexx )
+	ROM_REGION( 0x10000, "maincpu", 0 )
+	ROM_LOAD( "u16.bin", 0x00000, 0x10000, CRC(36dc423d) SHA1(0f350b7c533eb5270a72587ab3e050e5fe453006) )
+ROM_END
+
+COMP( 1995, accexx,      0,          0,      accexx,      accexx,  driver_device,   0,          "Accexx",        "Accexx",           MACHINE_IS_SKELETON )
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@ -274,6 +274,9 @@ ac1                             // 1984 Amateurcomputer AC1
 ac1_32                          // 1984 Amateurcomputer AC1 (32 lines)
 ac1scch                         // 1984 Amateurcomputer AC1 SCCH

+@source:accexx.cpp
+accexx
+
@source:ace.cpp
 ace                             // [1976 Allied Leisure]