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https://github.com/holub/mame
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vic1520: Correct MCU type; add some stub handlers
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AJR
parent
736ca84081
commit
66ab9ef75d
@ -40,14 +40,6 @@ PD7 Y MOTOR COM D
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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#define M6500_1_TAG "u1"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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@ -60,7 +52,7 @@ DEFINE_DEVICE_TYPE(VIC1520, vic1520_device, "vic1520", "VIC-1520 Color Printer P
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//-------------------------------------------------
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ROM_START( vic1520 )
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ROM_REGION( 0x800, M6500_1_TAG, 0 )
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ROM_REGION( 0x800, "mcu", 0 )
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ROM_SYSTEM_BIOS( 0, "r01", "325340-01" )
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ROMX_LOAD( "325340-01.u1", 0x000, 0x800, CRC(3757da6f) SHA1(8ab43603f74b0f269bbe890d1939a9ae31307eb1), ROM_BIOS(0) )
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ROM_SYSTEM_BIOS( 1, "r03", "325340-03" )
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@ -78,26 +70,18 @@ const tiny_rom_entry *vic1520_device::device_rom_region() const
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}
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//-------------------------------------------------
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// ADDRESS_MAP( vic1520_mem )
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//-------------------------------------------------
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void vic1520_device::vic1520_mem(address_map &map)
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{
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map.global_mask(0xfff);
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map(0x000, 0x03f).ram();
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map(0x800, 0xfff).rom().region(M6500_1_TAG, 0);
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}
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//-------------------------------------------------
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// device_add_mconfig - add device configuration
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//-------------------------------------------------
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void vic1520_device::device_add_mconfig(machine_config &config)
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{
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m6502_device &cpu(M6502(config, M6500_1_TAG, XTAL(2'000'000))); // M6500/1
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cpu.set_addrmap(AS_PROGRAM, &vic1520_device::vic1520_mem);
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M6500_1(config, m_mcu, 2_MHz_XTAL); // MPS 6500/1
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m_mcu->pa_out_cb().set(FUNC(vic1520_device::port_w));
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m_mcu->pb_in_cb().set(FUNC(vic1520_device::select_r));
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m_mcu->pb_out_cb().set(FUNC(vic1520_device::led_w));
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m_mcu->pc_out_cb().set(FUNC(vic1520_device::pen_w));
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m_mcu->pd_out_cb().set(FUNC(vic1520_device::motor_w));
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}
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@ -128,9 +112,11 @@ ioport_constructor vic1520_device::device_input_ports() const
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// vic1520_device - constructor
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//-------------------------------------------------
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vic1520_device::vic1520_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
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device_t(mconfig, VIC1520, tag, owner, clock),
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device_cbm_iec_interface(mconfig, *this)
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vic1520_device::vic1520_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: device_t(mconfig, VIC1520, tag, owner, clock)
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, device_cbm_iec_interface(mconfig, *this)
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, m_mcu(*this, "mcu")
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, m_pa_data(0xff)
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{
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}
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@ -141,15 +127,7 @@ vic1520_device::vic1520_device(const machine_config &mconfig, const char *tag, d
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void vic1520_device::device_start()
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{
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void vic1520_device::device_reset()
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{
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save_item(NAME(m_pa_data));
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}
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@ -159,6 +137,35 @@ void vic1520_device::device_reset()
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void vic1520_device::cbm_iec_atn(int state)
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{
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if (state && BIT(m_pa_data, 0))
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{
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m_pa_data &= 0xfe;
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m_mcu->pa_w(m_pa_data);
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}
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else if (!state && !BIT(m_pa_data, 0))
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{
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m_pa_data |= 0x01;
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m_mcu->pa_w(m_pa_data);
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}
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}
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//-------------------------------------------------
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// cbm_iec_clk -
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//-------------------------------------------------
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void vic1520_device::cbm_iec_clk(int state)
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{
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if (state && BIT(m_pa_data, 1))
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{
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m_pa_data &= 0xfd;
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m_mcu->pa_w(m_pa_data);
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}
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else if (!state && !BIT(m_pa_data, 1))
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{
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m_pa_data |= 0x02;
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m_mcu->pa_w(m_pa_data);
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}
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}
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@ -168,6 +175,16 @@ void vic1520_device::cbm_iec_atn(int state)
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void vic1520_device::cbm_iec_data(int state)
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{
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if (state && BIT(m_pa_data, 7))
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{
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m_pa_data &= 0x7f;
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m_mcu->pa_w(m_pa_data);
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}
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else if (!state && !BIT(m_pa_data, 7))
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{
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m_pa_data |= 0x80;
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m_mcu->pa_w(m_pa_data);
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}
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}
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@ -177,8 +194,52 @@ void vic1520_device::cbm_iec_data(int state)
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void vic1520_device::cbm_iec_reset(int state)
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{
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if (!state)
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{
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device_reset();
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}
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m_mcu->set_input_line(INPUT_LINE_RESET, state ? CLEAR_LINE : ASSERT_LINE);
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}
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//-------------------------------------------------
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// port_w - issue response on data line
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//-------------------------------------------------
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void vic1520_device::port_w(u8 data)
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{
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m_bus->data_w(this, !BIT(data, 6) && (data & 0x21) != 0x01);
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}
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//-------------------------------------------------
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// select_r -
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//-------------------------------------------------
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u8 vic1520_device::select_r()
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{
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return 0xff;
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}
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//-------------------------------------------------
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// led_w -
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//-------------------------------------------------
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void vic1520_device::led_w(u8 data)
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{
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}
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//-------------------------------------------------
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// pen_w -
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//-------------------------------------------------
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void vic1520_device::pen_w(u8 data)
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{
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}
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//-------------------------------------------------
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// motor_w -
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//-------------------------------------------------
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void vic1520_device::motor_w(u8 data)
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{
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}
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@ -12,7 +12,7 @@
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#pragma once
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#include "cbmiec.h"
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#include "cpu/m6502/m6502.h"
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#include "cpu/m6502/m6500_1.h"
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@ -26,12 +26,11 @@ class vic1520_device : public device_t, public device_cbm_iec_interface
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{
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public:
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// construction/destruction
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vic1520_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
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vic1520_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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protected:
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// device-level overrides
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virtual void device_start() override;
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virtual void device_reset() override;
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// optional information overrides
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virtual const tiny_rom_entry *device_rom_region() const override;
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@ -40,11 +39,20 @@ protected:
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// device_cbm_iec_interface overrides
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void cbm_iec_atn(int state) override;
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void cbm_iec_clk(int state) override;
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void cbm_iec_data(int state) override;
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void cbm_iec_reset(int state) override;
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private:
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void vic1520_mem(address_map &map);
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void port_w(u8 data);
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u8 select_r();
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void led_w(u8 data);
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void pen_w(u8 data);
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void motor_w(u8 data);
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required_device<m6500_1_device> m_mcu;
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u8 m_pa_data;
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};
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