// license:BSD-3-Clause // copyright-holders:Joakim Larsson Edstrom /* This is a driver for the Aceex DM2814 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 aceex2814_state : public driver_device { public: aceex2814_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 m_maincpu; void aceex2814(machine_config &config); void aceex2814_map(address_map &map); }; void aceex2814_state::aceex2814_map(address_map &map) { map(0x0000, 0x7fff).rom(); } static INPUT_PORTS_START( aceex2814 ) INPUT_PORTS_END void aceex2814_state::machine_start() { } void aceex2814_state::machine_reset() { } #define Y1_CLOCK 40320000 #define Y2_CLOCK 45342720 MACHINE_CONFIG_START(aceex2814_state::aceex2814) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", I80C31, Y2_CLOCK) MCFG_DEVICE_PROGRAM_MAP(aceex2814_map) MACHINE_CONFIG_END ROM_START( aceex2814 ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "dm2814u16-194.bin", 0x00000, 0x10000, CRC(36dc423d) SHA1(0f350b7c533eb5270a72587ab3e050e5fe453006) ) ROM_END // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1995, aceex2814, 0, 0, aceex2814, aceex2814, aceex2814_state, empty_init, "Aceex Corporation", "Aceex 2814", MACHINE_IS_SKELETON )