diff options
Diffstat (limited to 'src/mame/drivers/fidel6502.cpp')
-rw-r--r-- | src/mame/drivers/fidel6502.cpp | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/src/mame/drivers/fidel6502.cpp b/src/mame/drivers/fidel6502.cpp index 0bb93dc603e..9eb6ff362a2 100644 --- a/src/mame/drivers/fidel6502.cpp +++ b/src/mame/drivers/fidel6502.cpp @@ -158,13 +158,14 @@ All three of the above are called "segment H". ****************************************************************************** -Super 9 Sensory Chess Challenger (SU9) +Super 9 Sensory Chess Challenger (SU9/DS9) This is basically the Fidelity Elite A/S program on CSC hardware. +Model DS9(Deluxe) has a 5MHz XTAL, but is otherwise same. --------------------------------- -R6502AP CPU, assume 2MHz -1 RAM chip, assume 4KB -2*8KB ROM + 1*2KB ROM (+another 8KB ROM?) +R6502AP CPU, 1.95MHz(3.9MHz resonator) +2 RAM chips, assume 4KB +2*8KB ROM + 1*2KB ROM built-in CB9 module See CSC description above for more information. @@ -493,6 +494,9 @@ public: DECLARE_WRITE_LINE_MEMBER(csc_pia1_cb2_w); DECLARE_READ_LINE_MEMBER(csc_pia1_ca1_r); DECLARE_READ_LINE_MEMBER(csc_pia1_cb1_r); + DECLARE_MACHINE_RESET(su9); + DECLARE_INPUT_CHANGED_MEMBER(su9_cpu_freq); + void su9_set_cpu_freq(); void csc(machine_config &config); void su9(machine_config &config); void rsc(machine_config &config); @@ -596,6 +600,18 @@ READ8_MEMBER(fidel6502_state::csc_speech_r) return m_speech_rom[m_speech_bank << 12 | offset]; } +void fidel6502_state::su9_set_cpu_freq() +{ + // SU9 CPU is clocked 1.95MHz, DS9 is 2.5MHz + m_maincpu->set_unscaled_clock((ioport("FAKE")->read() & 1) ? (5.0_MHz_XTAL/2) : (3.9_MHz_XTAL/2)); +} + +MACHINE_RESET_MEMBER(fidel6502_state, su9) +{ + fidelbase_state::machine_reset(); + su9_set_cpu_freq(); +} + // 6821 PIA 0 @@ -1350,8 +1366,18 @@ static INPUT_PORTS_START( su9 ) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook") PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen") PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King") + + PORT_START("FAKE") + PORT_CONFNAME( 0x01, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, fidel6502_state, su9_cpu_freq, nullptr) // factory set + PORT_CONFSETTING( 0x00, "1.95MHz (SU9)" ) + PORT_CONFSETTING( 0x01, "2.5MHz (DS9)" ) INPUT_PORTS_END +INPUT_CHANGED_MEMBER(fidel6502_state::su9_cpu_freq) +{ + su9_set_cpu_freq(); +} + static INPUT_PORTS_START( su9sp ) PORT_INCLUDE( su9 ) @@ -1678,6 +1704,8 @@ MACHINE_CONFIG_DERIVED(fidel6502_state::su9, csc) MCFG_CPU_MODIFY("maincpu") MCFG_CPU_PROGRAM_MAP(su9_map) + MCFG_MACHINE_RESET_OVERRIDE(fidel6502_state, su9) + MCFG_DEFAULT_LAYOUT(layout_fidel_su9) MACHINE_CONFIG_END |