mirror of
https://github.com/holub/mame
synced 2025-04-16 05:24:54 +03:00
New skeleton driver: Regnecentralen RC759
This commit is contained in:
Dirk Best
parent
57411d33ef
commit
48cc86740b
@ -787,6 +787,7 @@ function linkProjects_mame_mess(_target, _subtarget)
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"psion",
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"radio",
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"rca",
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"regnecentralen",
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"ritam",
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"rm",
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"robotron",
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@ -2008,6 +2009,11 @@ files {
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MAME_DIR .. "src/mess/drivers/vip.c",
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}
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createMESSProjects(_target, _subtarget, "regnecentralen")
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files {
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MAME_DIR .. "src/mess/drivers/rc759.c",
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}
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createMESSProjects(_target, _subtarget, "ritam")
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files {
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MAME_DIR .. "src/mess/drivers/monty.c",
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@ -876,6 +876,9 @@ spt1740 // Symbol SPT 1740
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osborne1 // 1981 Osborne-1
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osbexec // 1982 Osborne Executive
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// Regnecentralen
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rc759 // 1984 RC759
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// Research Machines
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nimbus // RM Nimbus 186
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342
src/mess/drivers/rc759.c
Normal file
342
src/mess/drivers/rc759.c
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@ -0,0 +1,342 @@
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// license:GPL-2.0+
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// copyright-holders:Dirk Best
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/***************************************************************************
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Regnecentralen RC759
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TODO:
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- Emulate the Intel 82730 CRT controller and figure out the rest
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- Connect iSBX bus
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- (much later) move floppy/external printer to the slot interface
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Status: Hangs waiting for an answer from the 82730
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***************************************************************************/
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#include "emu.h"
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#include "cpu/i86/i186.h"
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#include "machine/ram.h"
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#include "machine/nvram.h"
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#include "machine/pic8259.h"
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#include "machine/i8255.h"
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#include "machine/wd_fdc.h"
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#include "imagedev/cassette.h"
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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class rc759_state : public driver_device
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{
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public:
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rc759_state(const machine_config &mconfig, device_type type, const char *tag) :
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driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu"),
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m_pic(*this, "pic"),
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m_ppi(*this, "ppi"),
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m_cas(*this, "cas"),
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m_fdc(*this, "fdc"),
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m_floppy0(*this, "fdc:0"),
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m_floppy1(*this, "fdc:1"),
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m_vram(*this, "vram"),
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m_cas_enabled(0),
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m_drq_source(0),
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m_nvram_bank(0),
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m_gfx_mode(0),
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m_keyboard_enable(0)
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{ }
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DECLARE_READ8_MEMBER(keyboard_r);
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DECLARE_WRITE8_MEMBER(floppy_control_w);
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DECLARE_READ8_MEMBER(floppy_ack_r);
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DECLARE_WRITE8_MEMBER(floppy_reserve_w);
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DECLARE_WRITE8_MEMBER(floppy_release_w);
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DECLARE_READ8_MEMBER(ppi_porta_r);
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DECLARE_READ8_MEMBER(ppi_portb_r);
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DECLARE_WRITE8_MEMBER(ppi_portc_w);
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DECLARE_READ8_MEMBER(palette_r);
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DECLARE_WRITE8_MEMBER(palette_w);
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DECLARE_READ8_MEMBER(nvram_r);
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DECLARE_WRITE8_MEMBER(nvram_w);
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DECLARE_READ8_MEMBER(rtc_r);
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DECLARE_WRITE8_MEMBER(rtc_w);
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DECLARE_READ8_MEMBER(irq_callback);
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protected:
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// driver_device overrides
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virtual void machine_start();
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virtual void machine_reset();
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private:
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required_device<i80186_cpu_device> m_maincpu;
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required_device<pic8259_device> m_pic;
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required_device<i8255_device> m_ppi;
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required_device<cassette_image_device> m_cas;
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required_device<wd2797_t> m_fdc;
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required_device<floppy_connector> m_floppy0;
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required_device<floppy_connector> m_floppy1;
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required_shared_ptr<UINT16> m_vram;
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int m_cas_enabled;
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int m_drq_source;
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int m_nvram_bank;
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int m_gfx_mode;
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int m_keyboard_enable;
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};
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//**************************************************************************
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// I/O
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//**************************************************************************
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// pic ir1 keyboard
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READ8_MEMBER( rc759_state::keyboard_r )
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{
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logerror("keyboard_r\n");
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return 0xff;
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}
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READ8_MEMBER( rc759_state::ppi_porta_r )
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{
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UINT8 data = 0;
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data |= m_cas->input() > 0 ? 1 : 0;
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data |= 1 << 1; // 0 = isbx module installed
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data |= 0 << 2; // option0 from isbx
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data |= 0 << 3; // option1 from isbx
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data |= 1 << 4; // mem ident0
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data |= 1 << 5; // mem ident1 (both 1 = 256k installed)
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data |= 0 << 6; // dpc connect (0 = external floppy/printer installed)
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data |= 1 << 7; // not used
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return data;
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}
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READ8_MEMBER( rc759_state::ppi_portb_r )
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{
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UINT8 data = 0;
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data |= 1 << 0; // 0 = micronet controller installed
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data |= 0 << 1; // rtc type, 0 = cdp1879
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data |= 1 << 2; // sound generator detect
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data |= 1 << 3; // not used
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data |= 1 << 4; // not used
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data |= 0 << 5; // 0 = color monitor, 1 = monochrome
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data |= 1 << 6; // 0 = 15khz, 1 = 22khz monitor
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data |= 1 << 7; // not used
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return data;
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}
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WRITE8_MEMBER( rc759_state::ppi_portc_w )
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{
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logerror("ppi_portc_w: %02x\n", data);
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m_cas_enabled = BIT(data, 0);
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m_cas->change_state(BIT(data, 1) ? CASSETTE_MOTOR_DISABLED : CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR);
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m_drq_source = (data >> 2) & 0x03;
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m_nvram_bank = (data >> 4) & 0x03;
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m_gfx_mode = BIT(data, 6);
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m_keyboard_enable = BIT(data, 7);
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}
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WRITE8_MEMBER( rc759_state::floppy_control_w )
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{
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logerror("floppy_control_w: %02x\n", data);
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switch (BIT(data, 0))
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{
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case 0: m_fdc->set_floppy(m_floppy0->get_device()); break;
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case 1: m_fdc->set_floppy(m_floppy1->get_device()); break;
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}
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if (m_floppy0->get_device()) m_floppy0->get_device()->mon_w(!BIT(data, 1));
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if (m_floppy1->get_device()) m_floppy1->get_device()->mon_w(!BIT(data, 2));
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// bit 3, enable precomp
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// bit 4, precomp 125/250 nsec
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m_fdc->dden_w(BIT(data, 5));
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m_fdc->set_unscaled_clock(BIT(data, 6) ? 2000000 : 1000000);
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m_fdc->set_force_ready(BIT(data, 7));
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}
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READ8_MEMBER( rc759_state::floppy_ack_r )
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{
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logerror("floppy_ack_r\n");
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return 0xff;
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}
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WRITE8_MEMBER( rc759_state::floppy_reserve_w )
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{
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logerror("floppy_reserve_w: %02x\n", data);
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}
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WRITE8_MEMBER( rc759_state::floppy_release_w )
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{
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logerror("floppy_release_w: %02x\n", data);
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}
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//**************************************************************************
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// VIDEO EMULATION
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//**************************************************************************
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READ8_MEMBER( rc759_state::palette_r )
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{
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logerror("palette_r(%02x)\n", offset);
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return 0xff;
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}
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WRITE8_MEMBER( rc759_state::palette_w )
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{
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logerror("palette_w(%02x): %02x\n", offset, data);
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}
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//**************************************************************************
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// MACHINE EMULATION
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//**************************************************************************
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// pic ir3 rtc
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READ8_MEMBER( rc759_state::rtc_r )
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{
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logerror("rtc_r(%02x)\n", offset);
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return 0xff;
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}
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WRITE8_MEMBER( rc759_state::rtc_w )
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{
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logerror("rtc_w(%02x): %02x\n", offset, data);
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}
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// 256x4 nvram is bank-switched using the ppi port c, bit 4 and 5
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READ8_MEMBER( rc759_state::nvram_r )
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{
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logerror("nvram_r(%02x)\n", offset);
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return 0xff;
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}
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WRITE8_MEMBER( rc759_state::nvram_w )
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{
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logerror("nvram_w(%02x): %02x\n", offset, data);
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}
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READ8_MEMBER( rc759_state::irq_callback )
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{
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return m_pic->acknowledge();
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}
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void rc759_state::machine_start()
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{
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}
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void rc759_state::machine_reset()
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{
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}
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//**************************************************************************
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// ADDRESS MAPS
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//**************************************************************************
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static ADDRESS_MAP_START( rc759_map, AS_PROGRAM, 16, rc759_state )
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AM_RANGE(0x00000, 0x3ffff) AM_RAM
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AM_RANGE(0xd8000, 0xdffff) AM_MIRROR(0x08000) AM_RAM AM_SHARE("vram")
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AM_RANGE(0xf8000, 0xfffff) AM_MIRROR(0x10000) AM_ROM AM_REGION("bios", 0)
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( rc759_io, AS_IO, 16, rc759_state )
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x000, 0x003) AM_DEVREADWRITE8("pic", pic8259_device, read, write, 0x00ff)
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AM_RANGE(0x020, 0x021) AM_READ8(keyboard_r, 0x00ff)
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AM_RANGE(0x050, 0x05f) AM_READWRITE8(rtc_r, rtc_w, 0x00ff) // and sound
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// AM_RANGE(0x060, 0x06f) AM_WRITE8(crt_control_w, 0x00ff)
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AM_RANGE(0x070, 0x077) AM_DEVREADWRITE8("ppi", i8255_device, read, write, 0x00ff)
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AM_RANGE(0x080, 0x0ff) AM_READWRITE8(nvram_r, nvram_w, 0x00ff)
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// AM_RANGE(0x100, 0x101) net
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AM_RANGE(0x180, 0x1bf) AM_READWRITE8(palette_r, palette_w, 0x00ff)
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// AM_RANGE(0x230, 0x231) crt reset
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// AM_RANGE(0x240, 0x241) crt ch. att.
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// AM_RANGE(0x250, 0x251) local printer data (centronics)
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// AM_RANGE(0x260, 0x261) local printer control (centronics)
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AM_RANGE(0x280, 0x287) AM_DEVREADWRITE8("fdc", wd2797_t, read, write, 0x00ff)
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AM_RANGE(0x288, 0x289) AM_WRITE8(floppy_control_w, 0x00ff)
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// AM_RANGE(0x28a, 0x28b) external printer data
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// AM_RANGE(0x28d, 0x28d) external printer control
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AM_RANGE(0x28e, 0x28f) AM_READWRITE8(floppy_ack_r, floppy_reserve_w, 0x00ff)
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AM_RANGE(0x290, 0x291) AM_WRITE8(floppy_release_w, 0x00ff)
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// AM_RANGE(0x292, 0x293) AM_READWRITE8(printer_ack_r, printer_reserve_w, 0x00ff)
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// AM_RANGE(0x294, 0x295) AM_WRITE8(printer_release_w, 0x00ff)
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// AM_RANGE(0x300, 0x30f) isbx1
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// AM_RANGE(0x310, 0x31f) isbx2
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// AM_RANGE(0x320, 0x321) isbx dma ack
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// AM_RANGE(0x330, 0x331) isbx tc
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ADDRESS_MAP_END
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//**************************************************************************
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// MACHINE DRIVERS
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//**************************************************************************
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static SLOT_INTERFACE_START( rc759_floppies )
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SLOT_INTERFACE("hd", FLOPPY_525_HD)
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SLOT_INTERFACE_END
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static MACHINE_CONFIG_START( rc759, rc759_state )
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MCFG_CPU_ADD("maincpu", I80186, 6000000)
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MCFG_CPU_PROGRAM_MAP(rc759_map)
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MCFG_CPU_IO_MAP(rc759_io)
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MCFG_80186_IRQ_SLAVE_ACK(READ8(rc759_state, irq_callback))
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// interrupt controller
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MCFG_PIC8259_ADD("pic", DEVWRITELINE("maincpu", i80186_cpu_device, int0_w), VCC, NULL)
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// ppi
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MCFG_DEVICE_ADD("ppi", I8255, 0)
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MCFG_I8255_IN_PORTA_CB(READ8(rc759_state, ppi_porta_r))
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MCFG_I8255_IN_PORTB_CB(READ8(rc759_state, ppi_portb_r))
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MCFG_I8255_OUT_PORTC_CB(WRITE8(rc759_state, ppi_portc_w))
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// floppy disk controller
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MCFG_WD2797x_ADD("fdc", 1000000)
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MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE("pic", pic8259_device, ir0_w))
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MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("maincpu", i80186_cpu_device, drq1_w))
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// floppy drives
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", rc759_floppies, "hd", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", rc759_floppies, "hd", floppy_image_device::default_floppy_formats)
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// cassette
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MCFG_CASSETTE_ADD("cas")
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MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_PLAY | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_MUTED)
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MACHINE_CONFIG_END
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//**************************************************************************
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// ROM DEFINITIONS
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//**************************************************************************
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ROM_START( rc759 )
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ROM_REGION(0x8000, "bios", 0)
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ROM_SYSTEM_BIOS(0, "1-21", "1? Version 2.1")
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ROMX_LOAD("rc759-1-2.1.rom", 0x0000, 0x8000, CRC(3a777d56) SHA1(a8592d61d5e1f92651a6f5e41c4ba14c9b6cc39b), ROM_BIOS(1))
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ROM_SYSTEM_BIOS(1, "1-51", "1? Version 5.1")
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ROMX_LOAD("rc759-1-5.1.rom", 0x0000, 0x8000, CRC(e1d53845) SHA1(902dc5ce28efd26b4f9c631933e197c2c187a7f1), ROM_BIOS(2))
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ROM_SYSTEM_BIOS(2, "2-40", "2? Version 4.0")
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ROMX_LOAD("rc759-2-4.0.rom", 0x0000, 0x8000, CRC(d3cb752a) SHA1(f50afe5dfa1b33a36a665d32d57c8c41d6685005), ROM_BIOS(3))
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ROM_SYSTEM_BIOS(3, "2-51", "2? Version 5.1")
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ROMX_LOAD("rc759-2-5.1.rom", 0x0000, 0x8000, CRC(00a31948) SHA1(23c4473c641606a56473791773270411d1019248), ROM_BIOS(4))
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ROM_END
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//**************************************************************************
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// SYSTEM DRIVERS
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//**************************************************************************
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COMP( 1984, rc759, 0, 0, rc759, 0, driver_device, 0, "Regnecentralen", "RC759", GAME_NOT_WORKING | GAME_NO_SOUND )
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