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Diffstat (limited to 'src/devices/machine/at.h')
-rw-r--r-- | src/devices/machine/at.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/src/devices/machine/at.h b/src/devices/machine/at.h new file mode 100644 index 00000000000..31c9f81123c --- /dev/null +++ b/src/devices/machine/at.h @@ -0,0 +1,107 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol, Miodrag Milanovic, Carl +#ifndef MAME_MACHINE_AT_H +#define MAME_MACHINE_AT_H + +#include "machine/mc146818.h" +#include "machine/pic8259.h" +#include "machine/pit8253.h" +#include "machine/am9517a.h" +#include "machine/at_keybc.h" +#include "bus/isa/isa.h" +#include "sound/spkrdev.h" +#include "softlist.h" + +class at_mb_device : public device_t +{ +public: + at_mb_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); + + void map(address_map &map) ATTR_COLD; + + auto kbd_clk() { return m_keybc.lookup()->kbd_clk(); } + auto kbd_data() { return m_keybc.lookup()->kbd_data(); } + + uint8_t page8_r(offs_t offset); + void page8_w(offs_t offset, uint8_t data); + void kbd_clk_w(int state); + void kbd_data_w(int state); + uint8_t portb_r(); + void portb_w(uint8_t data); + void rtcas_nmi_w(uint8_t data); + void iochck_w(int state); + + void shutdown(int state); + + uint32_t a20_286(bool state); + + void at_softlists(machine_config &config); +protected: + void device_start() override ATTR_COLD; + void device_reset() override ATTR_COLD; + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + +private: + void set_dma_channel(int channel, int state); + void speaker_set_spkrdata(uint8_t data); + + required_device<cpu_device> m_maincpu; + required_device<isa16_device> m_isabus; + required_device<pic8259_device> m_pic8259_slave; + required_device<am9517a_device> m_dma8237_1; + required_device<am9517a_device> m_dma8237_2; + required_device<pit8254_device> m_pit8254; + required_device<speaker_sound_device> m_speaker; + required_device<mc146818_device> m_mc146818; + optional_device<at_keyboard_controller_device> m_keybc; // removed in mtouchxl.cpp and vis.cpp + + uint8_t m_at_spkrdata = 0; + uint8_t m_pit_out2 = 0; + int m_dma_channel = 0; + bool m_cur_eop = false, m_cur_eop2 = false; + uint8_t m_dma_offset[2][4]{}; + uint8_t m_at_pages[0x10]{}; + uint16_t m_dma_high_byte = 0; + uint8_t m_at_speaker = 0; + uint8_t m_channel_check = 0; + uint8_t m_nmi_enabled = 0; + + void pit8254_out2_changed(int state); + + void dma8237_out_eop(int state); + void dma8237_2_out_eop(int state); + uint8_t dma8237_0_dack_r(); + uint8_t dma8237_1_dack_r(); + uint8_t dma8237_2_dack_r(); + uint8_t dma8237_3_dack_r(); + uint8_t dma8237_5_dack_r(); + uint8_t dma8237_6_dack_r(); + uint8_t dma8237_7_dack_r(); + void dma8237_0_dack_w(uint8_t data); + void dma8237_1_dack_w(uint8_t data); + void dma8237_2_dack_w(uint8_t data); + void dma8237_3_dack_w(uint8_t data); + void dma8237_5_dack_w(uint8_t data); + void dma8237_6_dack_w(uint8_t data); + void dma8237_7_dack_w(uint8_t data); + void dack0_w(int state); + void dack1_w(int state); + void dack2_w(int state); + void dack3_w(int state); + void dack4_w(int state); + void dack5_w(int state); + void dack6_w(int state); + void dack7_w(int state); + uint8_t get_slave_ack(offs_t offset); + void dma_hrq_changed(int state); + + uint8_t dma_read_byte(offs_t offset); + void dma_write_byte(offs_t offset, uint8_t data); + uint8_t dma_read_word(offs_t offset); + void dma_write_word(offs_t offset, uint8_t data); +}; + +DECLARE_DEVICE_TYPE(AT_MB, at_mb_device) + + +#endif // MAME_MACHINE_AT_H |