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-rw-r--r--src/mess/drivers/gimix.c686
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diff --git a/src/mess/drivers/gimix.c b/src/mess/drivers/gimix.c
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-// license:BSD-3-Clause
-// copyright-holders:Barry Rodewald, Robbbert
-/*
- Gimix 6809-Based Computers
-
- Representative group of GIMIX users included: Government Research and Scientific Organizations, Universities, Industrial, Computer Mainframe and
- Peripheral Manufacturers and Software Houses.
-
- This system is most notable for being the development base of the "Vid Kidz", a pair of programmers (Eugene Jarvis and Larry DeMar) who formerly
- worked for Williams Electronics on the game, Defender. They left Willams and continued work on other games eventually making a deal with Williams
- to continue to design games producing the titles: Stargate, Robotron: 2084 and Blaster.
-
- Information Link: http://www.backglass.org/duncan/gimix/
-
- TODO: Everything
-
- Usage:
- System boots into GMXBUG-09
- To boot Flex, insert the Flex system disk (3.3 or later, must support the DMA disk controller), type U and press enter.
- To boot OS-9, insert the OS-9 system disk, type O, and press Enter.
- Note that booting OS-9 doesn't currently work without a timer hack.
-*/
-
-#include "emu.h"
-#include "cpu/m6809/m6809.h"
-#include "machine/mm58167.h"
-#include "machine/6840ptm.h"
-#include "machine/6821pia.h"
-#include "machine/6850acia.h"
-#include "bus/rs232/rs232.h"
-#include "machine/clock.h"
-#include "machine/wd_fdc.h"
-#include "machine/terminal.h"
-#include "machine/bankdev.h"
-#include "machine/ram.h"
-#include "formats/flex_dsk.h"
-
-#define DMA_DRQ (m_dma_status & 0x80)
-#define DMA_INTRQ (m_dma_status & 0x40)
-#define DMA_MOTOR_DELAY (m_dma_status & 0x20)
-#define DMA_ENABLED (m_dma_status & 0x10)
-#define DMA_FAULT (m_dma_status & 0x08)
-#define DMA_DRIVE_SIZE (m_dma_status & 0x04)
-#define DMA_DIP_SENSE (m_dma_status & 0x01)
-
-#define DMA_CONNECT_SEL (m_dma_drive_select & 0x40)
-#define DMA_DENSITY (m_dma_drive_select & 0x20)
-#define DMA_WR_PROTECT (m_dma_drive_select & 0x10)
-#define DMA_SEL_DRV3 (m_dma_drive_select & 0x08)
-#define DMA_SEL_DRV2 (m_dma_drive_select & 0x04)
-#define DMA_SEL_DRV1 (m_dma_drive_select & 0x02)
-#define DMA_SEL_DRV0 (m_dma_drive_select & 0x01)
-
-#define DMA_IRQ_ENABLE (m_dma_ctrl & 0x80)
-#define DMA_SIDE_SEL (m_dma_ctrl & 0x40)
-#define DMA_DIRECTION (m_dma_ctrl & 0x20)
-#define DMA_ENABLE (m_dma_ctrl & 0x10)
-#define DMA_BANK (m_dma_ctrl & 0x0f)
-
-#define DMA_START_ADDR (((m_dma_ctrl & 0x0f) << 16) | m_dma_start_addr)
-
-class gimix_state : public driver_device
-{
-public:
- gimix_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_fdc(*this, "fdc")
- , m_floppy0(*this, "fdc:0")
- , m_floppy1(*this, "fdc:1")
- , m_ram(*this, RAM_TAG)
- , m_rom(*this, "roms")
- , m_acia1(*this, "acia1")
- , m_acia2(*this, "acia2")
- , m_acia3(*this, "acia3")
- , m_acia4(*this, "acia4")
- , m_bank1(*this, "bank1")
- , m_bank2(*this, "bank2")
- , m_bank3(*this, "bank3")
- , m_bank4(*this, "bank4")
- , m_bank5(*this, "bank5")
- , m_bank6(*this, "bank6")
- , m_bank7(*this, "bank7")
- , m_bank8(*this, "bank8")
- , m_bank9(*this, "bank9")
- , m_bank10(*this, "bank10")
- , m_bank11(*this, "bank11")
- , m_bank12(*this, "bank12")
- , m_bank13(*this, "bank13")
- , m_bank14(*this, "bank14")
- , m_bank15(*this, "bank15")
- , m_bank16(*this, "bank16")
- , m_rombank1(*this, "rombank1")
- , m_rombank2(*this, "rombank2")
- , m_fixedrombank(*this, "fixedrombank")
- , m_dma_dip(*this, "dma_s2")
- {}
-
- DECLARE_WRITE8_MEMBER(kbd_put);
- DECLARE_READ8_MEMBER(keyin_r);
- DECLARE_READ8_MEMBER(status_r);
- DECLARE_WRITE8_MEMBER(system_w);
- DECLARE_WRITE_LINE_MEMBER(irq_w);
- DECLARE_WRITE_LINE_MEMBER(fdc_irq_w);
- DECLARE_WRITE_LINE_MEMBER(fdc_drq_w);
- DECLARE_READ8_MEMBER(dma_r);
- DECLARE_WRITE8_MEMBER(dma_w);
- DECLARE_READ8_MEMBER(fdc_r);
- DECLARE_WRITE8_MEMBER(fdc_w);
- DECLARE_WRITE_LINE_MEMBER(write_acia_clock);
- DECLARE_READ8_MEMBER(pia_pa_r);
- DECLARE_WRITE8_MEMBER(pia_pa_w);
- DECLARE_READ8_MEMBER(pia_pb_r);
- DECLARE_WRITE8_MEMBER(pia_pb_w);
- TIMER_DEVICE_CALLBACK_MEMBER(test_timer_w);
- DECLARE_INPUT_CHANGED_MEMBER(drive_size_cb);
-
- DECLARE_FLOPPY_FORMATS(floppy_formats);
-
-private:
- UINT8 m_term_data;
- UINT8 m_dma_status;
- UINT8 m_dma_ctrl;
- UINT8 m_dma_drive_select;
- UINT16 m_dma_start_addr;
- UINT32 m_dma_current_addr;
- UINT8 m_task;
- UINT8 m_task_banks[16][16];
- UINT8 m_selected_drive;
- bool m_floppy0_ready;
- bool m_floppy1_ready;
-
- UINT8 m_pia1_pa;
- UINT8 m_pia1_pb;
-
- virtual void machine_reset();
- virtual void machine_start();
- virtual void driver_start();
-
- void refresh_memory();
-
- required_device<cpu_device> m_maincpu;
- required_device<fd1797_t> m_fdc;
- required_device<floppy_connector> m_floppy0;
- required_device<floppy_connector> m_floppy1;
- required_device<ram_device> m_ram;
- required_memory_region m_rom;
- required_device<acia6850_device> m_acia1;
- required_device<acia6850_device> m_acia2;
- required_device<acia6850_device> m_acia3;
- required_device<acia6850_device> m_acia4;
-
- required_device<address_map_bank_device> m_bank1;
- required_device<address_map_bank_device> m_bank2;
- required_device<address_map_bank_device> m_bank3;
- required_device<address_map_bank_device> m_bank4;
- required_device<address_map_bank_device> m_bank5;
- required_device<address_map_bank_device> m_bank6;
- required_device<address_map_bank_device> m_bank7;
- required_device<address_map_bank_device> m_bank8;
- required_device<address_map_bank_device> m_bank9;
- required_device<address_map_bank_device> m_bank10;
- required_device<address_map_bank_device> m_bank11;
- required_device<address_map_bank_device> m_bank12;
- required_device<address_map_bank_device> m_bank13;
- required_device<address_map_bank_device> m_bank14;
- required_device<address_map_bank_device> m_bank15;
- required_device<address_map_bank_device> m_bank16;
- required_memory_bank m_rombank1;
- required_memory_bank m_rombank2;
- required_memory_bank m_fixedrombank;
-
- required_ioport m_dma_dip;
-};
-
-static ADDRESS_MAP_START( gimix_banked_mem, AS_PROGRAM, 8, gimix_state)
- AM_RANGE(0x00000, 0x0dfff) AM_RAMBANK("lower_ram")
- AM_RANGE(0x0e000, 0x0e000) AM_DEVREADWRITE("acia1",acia6850_device,status_r,control_w)
- AM_RANGE(0x0e001, 0x0e001) AM_DEVREADWRITE("acia1",acia6850_device,data_r,data_w)
- AM_RANGE(0x0e004, 0x0e004) AM_DEVREADWRITE("acia2",acia6850_device,status_r,control_w)
- AM_RANGE(0x0e005, 0x0e005) AM_DEVREADWRITE("acia2",acia6850_device,data_r,data_w)
- //AM_RANGE(0x0e018, 0x0e01b) AM_READWRITE(fdc_r, fdc_w) // FD1797 FDC (PIO)
- AM_RANGE(0x0e100, 0x0e1ff) AM_RAM
- //AM_RANGE(0x0e200, 0x0e20f) // 9511A / 9512 Arithmetic Processor
- AM_RANGE(0x0e210, 0x0e21f) AM_DEVREADWRITE("timer",ptm6840_device,read,write)
- AM_RANGE(0x0e220, 0x0e23f) AM_DEVREADWRITE("rtc",mm58167_device,read,write)
- AM_RANGE(0x0e240, 0x0e3af) AM_RAM
- AM_RANGE(0x0e3b0, 0x0e3b3) AM_READWRITE(dma_r, dma_w) // DMA controller (custom?)
- AM_RANGE(0x0e3b4, 0x0e3b7) AM_READWRITE(fdc_r, fdc_w) // FD1797 FDC
- AM_RANGE(0x0e400, 0x0e7ff) AM_RAM // scratchpad RAM
- AM_RANGE(0x0e800, 0x0efff) AM_RAM
- AM_RANGE(0x0f000, 0x0f7ff) AM_ROMBANK("rombank2")
- AM_RANGE(0x0f800, 0x0ffff) AM_ROMBANK("rombank1")
- //AM_RANGE(0x10000, 0x1ffff) AM_RAM
-ADDRESS_MAP_END
-
-static ADDRESS_MAP_START( gimix_mem, AS_PROGRAM, 8, gimix_state )
- AM_RANGE(0x0000, 0x0fff) AM_DEVREADWRITE("bank1", address_map_bank_device, read8, write8)
- AM_RANGE(0x1000, 0x1fff) AM_DEVREADWRITE("bank2", address_map_bank_device, read8, write8)
- AM_RANGE(0x2000, 0x2fff) AM_DEVREADWRITE("bank3", address_map_bank_device, read8, write8)
- AM_RANGE(0x3000, 0x3fff) AM_DEVREADWRITE("bank4", address_map_bank_device, read8, write8)
- AM_RANGE(0x4000, 0x4fff) AM_DEVREADWRITE("bank5", address_map_bank_device, read8, write8)
- AM_RANGE(0x5000, 0x5fff) AM_DEVREADWRITE("bank6", address_map_bank_device, read8, write8)
- AM_RANGE(0x6000, 0x6fff) AM_DEVREADWRITE("bank7", address_map_bank_device, read8, write8)
- AM_RANGE(0x7000, 0x7fff) AM_DEVREADWRITE("bank8", address_map_bank_device, read8, write8)
- AM_RANGE(0x8000, 0x8fff) AM_DEVREADWRITE("bank9", address_map_bank_device, read8, write8)
- AM_RANGE(0x9000, 0x9fff) AM_DEVREADWRITE("bank10", address_map_bank_device, read8, write8)
- AM_RANGE(0xa000, 0xafff) AM_DEVREADWRITE("bank11", address_map_bank_device, read8, write8)
- AM_RANGE(0xb000, 0xbfff) AM_DEVREADWRITE("bank12", address_map_bank_device, read8, write8)
- AM_RANGE(0xc000, 0xcfff) AM_DEVREADWRITE("bank13", address_map_bank_device, read8, write8)
- AM_RANGE(0xd000, 0xdfff) AM_DEVREADWRITE("bank14", address_map_bank_device, read8, write8)
- AM_RANGE(0xe000, 0xefff) AM_DEVREADWRITE("bank15", address_map_bank_device, read8, write8)
- AM_RANGE(0xf000, 0xfeff) AM_DEVREADWRITE("bank16", address_map_bank_device, read8, write8)
- AM_RANGE(0xff00, 0xffff) AM_ROMBANK("fixedrombank") AM_WRITE(system_w)
-ADDRESS_MAP_END
-
-static ADDRESS_MAP_START( gimix_io, AS_IO, 8, gimix_state )
-ADDRESS_MAP_END
-
-static INPUT_PORTS_START( gimix )
- PORT_START("dma_s2")
- PORT_DIPNAME(0x00000100,0x00000000,"5.25\" / 8\" floppy drive 0") PORT_DIPLOCATION("S2:9") PORT_CHANGED_MEMBER(DEVICE_SELF,gimix_state,drive_size_cb,NULL)
- PORT_DIPSETTING(0x00000000,"5.25\"")
- PORT_DIPSETTING(0x00000100,"8\"")
-
-INPUT_PORTS_END
-
-READ8_MEMBER( gimix_state::keyin_r )
-{
- UINT8 ret = m_term_data;
- m_term_data = 0;
- return ret;
-}
-
-READ8_MEMBER( gimix_state::status_r )
-{
- return (m_term_data) ? 3 : 2;
-}
-
-WRITE8_MEMBER( gimix_state::kbd_put )
-{
- m_term_data = data;
-}
-
-void gimix_state::refresh_memory()
-{
- int x;
- address_map_bank_device* banknum[16] = { m_bank1, m_bank2, m_bank3, m_bank4, m_bank5, m_bank6, m_bank7, m_bank8,
- m_bank9, m_bank10, m_bank11, m_bank12, m_bank13, m_bank14, m_bank15, m_bank16};
-
- for(x=0;x<16;x++) // for each bank
- {
- banknum[x]->set_bank(m_task_banks[m_task][x]);
- }
-}
-
-WRITE8_MEMBER( gimix_state::system_w )
-{
- if(offset == 0x7f) // task register
- {
- if(data & 0x20) // FPLA software latch
- {
- m_rombank1->set_entry(2);
- m_rombank2->set_entry(3);
- m_fixedrombank->set_entry(2);
- logerror("SYS: FPLA software latch set\n");
- }
- else
- {
- m_rombank1->set_entry(0);
- m_rombank2->set_entry(1);
- m_fixedrombank->set_entry(0);
- logerror("SYS: FPLA software latch reset\n");
- }
- m_task = data & 0x0f;
- refresh_memory();
- logerror("SYS: Task set to %02x\n",data & 0x0f);
- }
- if(offset >= 0xf0) // Dynamic Address Translation RAM (write only)
- {
- address_map_bank_device* banknum[16] = { m_bank1, m_bank2, m_bank3, m_bank4, m_bank5, m_bank6, m_bank7, m_bank8,
- m_bank9, m_bank10, m_bank11, m_bank12, m_bank13, m_bank14, m_bank15, m_bank16};
-
- banknum[offset-0xf0]->set_bank(data & 0x0f);
- m_task_banks[m_task][offset-0xf0] = data & 0x0f;
- logerror("SYS: Bank %i set to physical bank %02x\n",offset-0xf0,data);
- }
-}
-
-READ8_MEMBER(gimix_state::dma_r)
-{
- switch(offset)
- {
- case 0:
- if(m_dma_dip->read() & 0x00000100)
- m_dma_status |= 0x01; // 8"
- else
- m_dma_status &= ~0x01; // 5.25"
- return m_dma_status;
- case 1:
- return m_dma_ctrl;
- case 2:
- return (m_dma_start_addr & 0xff00) >> 8;
- case 3:
- return (m_dma_start_addr & 0x00ff);
- default:
- logerror("DMA: Unknown or invalid DMA register %02x read\n",offset);
- }
- return 0xff;
-}
-
-WRITE8_MEMBER(gimix_state::dma_w)
-{
- switch(offset)
- {
- case 0:
- logerror("DMA: Drive select %02x\n",data);
- m_dma_drive_select = data;
- m_fdc->dden_w(DMA_DENSITY ? 1 : 0);
- if(data & 0x40) // 8" / 5.25" connector select
- m_dma_status |= 0x04;
- else
- m_dma_status &= ~0x04;
- if(data & 0x01)
- {
- m_fdc->set_floppy(m_floppy0->get_device());
- m_selected_drive = 1;
- m_floppy1->get_device()->mon_w(1); // switch off the motor of other drives...
- m_floppy1_ready = false;
- logerror("FDC: Floppy drive 1 motor off\n");
- }
- if(data & 0x02)
- {
- m_fdc->set_floppy(m_floppy1->get_device());
- m_selected_drive = 2;
- m_floppy0->get_device()->mon_w(1); // switch off the motor of other drives...
- m_floppy0_ready = false;
- logerror("FDC: Floppy drive 0 motor off\n");
- }
- break;
- case 1:
- logerror("DMA: DMA control %02x\n",data);
- m_dma_ctrl = data;
- if(data & 0x10)
- m_dma_status |= 0x12;
- else
- m_dma_status &= ~0x12;
- if(data & 0x40)
- {
- if(m_selected_drive == 1)
- m_floppy0->get_device()->ss_w(1);
- if(m_selected_drive == 2)
- m_floppy1->get_device()->ss_w(1);
- }
- else
- {
- if(m_selected_drive == 1)
- m_floppy0->get_device()->ss_w(0);
- if(m_selected_drive == 2)
- m_floppy1->get_device()->ss_w(0);
- }
- break;
- case 2:
- logerror("DMA: DMA start address MSB %02x\n",data);
- m_dma_start_addr = (m_dma_start_addr & 0x00ff) | (data << 8);
- m_dma_current_addr = DMA_START_ADDR;
- break;
- case 3:
- logerror("DMA: DMA start address LSB %02x\n",data);
- m_dma_start_addr = (m_dma_start_addr & 0xff00) | data;
- m_dma_current_addr = DMA_START_ADDR;
- break;
- default:
- logerror("DMA: Unknown or invalid DMA register %02x write %02x\n",offset,data);
- }
-}
-
-READ8_MEMBER(gimix_state::fdc_r)
-{
- // motors are switched on on FDC access
- if(m_selected_drive == 1 && m_floppy0_ready == false)
- {
- m_floppy0->get_device()->mon_w(0);
- m_floppy0_ready = true;
- logerror("FDC: Floppy drive 0 motor on\n");
- }
- if(m_selected_drive == 2 && m_floppy1_ready == false)
- {
- m_floppy1->get_device()->mon_w(0);
- m_floppy1_ready = true;
- logerror("FDC: Floppy drive 1 motor on\n");
- }
- return m_fdc->read(space,offset);
-}
-
-WRITE8_MEMBER(gimix_state::fdc_w)
-{
- // motors are switched on on FDC access
- if(m_selected_drive == 1)
- m_floppy0->get_device()->mon_w(0);
- if(m_selected_drive == 2)
- m_floppy1->get_device()->mon_w(0);
- m_fdc->write(space,offset,data);
-}
-
-READ8_MEMBER(gimix_state::pia_pa_r)
-{
- return m_pia1_pa;
-}
-
-WRITE8_MEMBER(gimix_state::pia_pa_w)
-{
- m_pia1_pa = data;
- logerror("PIA: Port A write %02x\n",data);
-}
-
-READ8_MEMBER(gimix_state::pia_pb_r)
-{
- return m_pia1_pb;
-}
-
-WRITE8_MEMBER(gimix_state::pia_pb_w)
-{
- m_pia1_pb = data;
- logerror("PIA: Port B write %02x\n",data);
-}
-
-
-WRITE_LINE_MEMBER(gimix_state::irq_w)
-{
- m_maincpu->set_input_line(M6809_IRQ_LINE,state ? ASSERT_LINE : CLEAR_LINE);
-}
-
-WRITE_LINE_MEMBER(gimix_state::fdc_irq_w)
-{
- if(state)
- m_dma_status |= 0x40;
- else
- m_dma_status &= ~0x40;
-}
-
-WRITE_LINE_MEMBER(gimix_state::fdc_drq_w)
-{
- if(state && DMA_ENABLED)
- {
- m_dma_status |= 0x80;
- // do a DMA transfer
- if(DMA_DIRECTION)
- {
- // write to disk
- m_fdc->data_w(m_ram->read(m_dma_current_addr));
-// logerror("DMA: read from RAM %05x\n",m_dma_current_addr);
- }
- else
- {
- // read from disk
- m_ram->write(m_dma_current_addr,m_fdc->data_r());
-// logerror("DMA: write to RAM %05x\n",m_dma_current_addr);
- }
- m_dma_current_addr++;
- }
- else
- m_dma_status &= ~0x80;
-}
-
-INPUT_CHANGED_MEMBER(gimix_state::drive_size_cb)
-{
- // set FDC clock based on DIP Switch S2-9 (5.25"/8" drive select)
- if(m_dma_dip->read() & 0x00000100)
- m_fdc->set_unscaled_clock(XTAL_8MHz / 4); // 8 inch (2MHz)
- else
- m_fdc->set_unscaled_clock(XTAL_8MHz / 8); // 5.25 inch (1MHz)
-}
-
-void gimix_state::machine_reset()
-{
- m_term_data = 0;
- m_rombank1->set_entry(0); // RAM banks are undefined on startup
- m_rombank2->set_entry(1);
- m_fixedrombank->set_entry(0);
- m_dma_status = 0x00;
- m_dma_ctrl = 0x00;
- m_task = 0x00;
- m_selected_drive = 0;
- m_floppy0_ready = false;
- m_floppy1_ready = false;
- membank("lower_ram")->set_base(m_ram->pointer());
- if(m_ram->size() > 65536)
- membank("upper_ram")->set_base(m_ram->pointer()+0x10000);
-
- // initialise FDC clock based on DIP Switch S2-9 (5.25"/8" drive select)
- if(m_dma_dip->read() & 0x00000100)
- m_fdc->set_unscaled_clock(XTAL_8MHz / 4); // 8 inch (2MHz)
- else
- m_fdc->set_unscaled_clock(XTAL_8MHz / 8); // 5.25 inch (1MHz)
-}
-
-void gimix_state::machine_start()
-{
- UINT8* ROM = m_rom->base();
- m_rombank1->configure_entries(0,4,ROM,0x800);
- m_rombank2->configure_entries(0,4,ROM,0x800);
- m_fixedrombank->configure_entries(0,4,ROM+0x700,0x800);
- m_rombank1->set_entry(0); // RAM banks are undefined on startup
- m_rombank2->set_entry(1);
- m_fixedrombank->set_entry(0);
- // install any extra RAM
- if(m_ram->size() > 65536)
- {
- m_bank1->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank2->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank3->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank4->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank5->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank6->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank7->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank8->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank9->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank10->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank11->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank12->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank13->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank14->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank15->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- m_bank16->space(AS_PROGRAM).install_readwrite_bank(0x10000,m_ram->size()-1,0xffff,0,"upper_ram");
- }
- m_floppy0->get_device()->set_rpm(300);
- m_floppy1->get_device()->set_rpm(300);
-}
-
-void gimix_state::driver_start()
-{
-}
-
-WRITE_LINE_MEMBER(gimix_state::write_acia_clock)
-{
- m_acia1->write_txc(state);
- m_acia1->write_rxc(state);
- m_acia2->write_txc(state);
- m_acia2->write_rxc(state);
-}
-
-TIMER_DEVICE_CALLBACK_MEMBER(gimix_state::test_timer_w)
-{
- static bool prev;
- if(!prev)
- {
- m_maincpu->set_input_line(M6809_IRQ_LINE,ASSERT_LINE);
- prev = true;
- }
- else
- {
- m_maincpu->set_input_line(M6809_IRQ_LINE,CLEAR_LINE);
- prev = false;
- }
-}
-
-FLOPPY_FORMATS_MEMBER( gimix_state::floppy_formats )
- FLOPPY_FLEX_FORMAT
-FLOPPY_FORMATS_END
-
-static SLOT_INTERFACE_START( gimix_floppies )
- SLOT_INTERFACE( "525hd", FLOPPY_525_HD )
- SLOT_INTERFACE( "8dd", FLOPPY_8_DSDD )
-SLOT_INTERFACE_END
-
-#define MCFG_ADDRESS_BANK(tag) \
-MCFG_DEVICE_ADD(tag, ADDRESS_MAP_BANK, 0) \
-MCFG_DEVICE_PROGRAM_MAP(gimix_banked_mem) \
-MCFG_ADDRESS_MAP_BANK_ENDIANNESS(ENDIANNESS_LITTLE) \
-MCFG_ADDRESS_MAP_BANK_DATABUS_WIDTH(8) \
-MCFG_ADDRESS_MAP_BANK_STRIDE(0x1000)
-
-static MACHINE_CONFIG_START( gimix, gimix_state )
- // basic machine hardware
- MCFG_CPU_ADD("maincpu", M6809E, XTAL_8MHz)
- MCFG_CPU_PROGRAM_MAP(gimix_mem)
- MCFG_CPU_IO_MAP(gimix_io)
-
- /* rtc */
- MCFG_DEVICE_ADD("rtc", MM58167, XTAL_32_768kHz)
- MCFG_MM58167_IRQ_CALLBACK(WRITELINE(gimix_state,irq_w))
-
- /* timer */
- MCFG_DEVICE_ADD("timer", PTM6840, XTAL_2MHz) // clock is a guess
- MCFG_PTM6840_IRQ_CB(WRITELINE(gimix_state,irq_w)) // PCB pictures show both the RTC and timer set to generate IRQs (are jumper configurable)
-
- /* floppy disks */
- MCFG_FD1797_ADD("fdc",XTAL_8MHz / 4)
- MCFG_WD_FDC_INTRQ_CALLBACK(WRITELINE(gimix_state,fdc_irq_w))
- MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(gimix_state,fdc_drq_w))
- MCFG_WD_FDC_FORCE_READY
- MCFG_FLOPPY_DRIVE_ADD("fdc:0", gimix_floppies, "525hd", gimix_state::floppy_formats)
- MCFG_FLOPPY_DRIVE_ADD("fdc:1", gimix_floppies, "525hd", gimix_state::floppy_formats)
-
- /* parallel ports */
- MCFG_DEVICE_ADD("pia1",PIA6821,XTAL_2MHz)
- MCFG_PIA_WRITEPA_HANDLER(WRITE8(gimix_state,pia_pa_w))
- MCFG_PIA_WRITEPB_HANDLER(WRITE8(gimix_state,pia_pb_w))
- MCFG_PIA_READPA_HANDLER(READ8(gimix_state,pia_pa_r))
- MCFG_PIA_READPB_HANDLER(READ8(gimix_state,pia_pb_r))
- MCFG_DEVICE_ADD("pia2",PIA6821,XTAL_2MHz)
-
- /* serial ports */
- MCFG_DEVICE_ADD("acia1",ACIA6850,XTAL_2MHz)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("serial1",rs232_port_device,write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE("serial1",rs232_port_device,write_rts))
-
- MCFG_DEVICE_ADD("acia2",ACIA6850,XTAL_2MHz)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("serial2",rs232_port_device,write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE("serial2",rs232_port_device,write_rts))
-
- MCFG_DEVICE_ADD("acia3",ACIA6850,XTAL_2MHz)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("serial3",rs232_port_device,write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE("serial3",rs232_port_device,write_rts))
-
- MCFG_DEVICE_ADD("acia4",ACIA6850,XTAL_2MHz)
- MCFG_ACIA6850_TXD_HANDLER(DEVWRITELINE("serial4",rs232_port_device,write_txd))
- MCFG_ACIA6850_RTS_HANDLER(DEVWRITELINE("serial4",rs232_port_device,write_rts))
-
- MCFG_RS232_PORT_ADD("serial1",default_rs232_devices,NULL)
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE("acia1",acia6850_device,write_rxd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE("acia1",acia6850_device,write_cts))
-
- MCFG_RS232_PORT_ADD("serial2",default_rs232_devices,"terminal")
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE("acia2",acia6850_device,write_rxd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE("acia2",acia6850_device,write_cts))
-
- MCFG_RS232_PORT_ADD("serial3",default_rs232_devices,NULL)
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE("acia3",acia6850_device,write_rxd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE("acia3",acia6850_device,write_cts))
-
- MCFG_RS232_PORT_ADD("serial4",default_rs232_devices,NULL)
- MCFG_RS232_RXD_HANDLER(DEVWRITELINE("acia4",acia6850_device,write_rxd))
- MCFG_RS232_CTS_HANDLER(DEVWRITELINE("acia4",acia6850_device,write_cts))
-
- MCFG_DEVICE_ADD("acia_clock", CLOCK, 153600)
- MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(gimix_state, write_acia_clock))
-
- /* banking */
- MCFG_ADDRESS_BANK("bank1")
- MCFG_ADDRESS_BANK("bank2")
- MCFG_ADDRESS_BANK("bank3")
- MCFG_ADDRESS_BANK("bank4")
- MCFG_ADDRESS_BANK("bank5")
- MCFG_ADDRESS_BANK("bank6")
- MCFG_ADDRESS_BANK("bank7")
- MCFG_ADDRESS_BANK("bank8")
- MCFG_ADDRESS_BANK("bank9")
- MCFG_ADDRESS_BANK("bank10")
- MCFG_ADDRESS_BANK("bank11")
- MCFG_ADDRESS_BANK("bank12")
- MCFG_ADDRESS_BANK("bank13")
- MCFG_ADDRESS_BANK("bank14")
- MCFG_ADDRESS_BANK("bank15")
- MCFG_ADDRESS_BANK("bank16")
-
- /* internal ram */
- MCFG_RAM_ADD(RAM_TAG)
- MCFG_RAM_DEFAULT_SIZE("128K")
- MCFG_RAM_EXTRA_OPTIONS("56K,256K,512K")
-
- MCFG_SOFTWARE_LIST_ADD("flop_list","gimix")
-
- // uncomment this timer to use a hack that generates a regular IRQ, this will get OS-9 to boot
- // for some unknown reason, OS-9 does not touch the 6840, and only clears/disables IRQs on the RTC
- //MCFG_TIMER_DRIVER_ADD_PERIODIC("test_timer",gimix_state,test_timer_w,attotime::from_msec(100))
-MACHINE_CONFIG_END
-
-ROM_START( gimix )
- ROM_REGION( 0x10000, "roms", 0)
-/* CPU board U4: gimixf8.bin - checksum 68DB - 2716 - GMXBUG09 V2.1 | (c)1981 GIMIX | $F800 I2716 */
- ROM_LOAD( "gimixf8.u4", 0x000000, 0x000800, CRC(7d60f838) SHA1(eb7546e8bbf50d33e181f3e86c3e4c5c9032cab2) )
-/* CPU board U5: gimixv14.bin - checksum 97E2 - 2716 - GIMIX 6809 | AUTOBOOT | V1.4 I2716 */
- ROM_LOAD( "gimixv14.u5", 0x000800, 0x000800, CRC(f795b8b9) SHA1(eda2de51cc298d94b36605437d900ce971b3b276) )
-/* CPU board U6: os9l1v11.bin - checksum 2C84 - 2716 - OS-9tmL1 V1 | GIMIX P1 " (c)1982 MSC
- CPU board U7: os9l1v12.bin - checksum 7694 - 2716 - OS-9tmL1 V1 | GIMIX P2-68 | (c)1982 MSC */
- ROM_LOAD( "os9l1v11.u6", 0x001000, 0x000800, CRC(0d6527a0) SHA1(1435a22581c6e9e0ae338071a72eed646f429530) )
- ROM_LOAD( "os9l1v12.u7", 0x001800, 0x000800, CRC(b3c65feb) SHA1(19d1ea1e84473b25c95cbb8449e6b9828567e998) )
-
-/* Hard drive controller board 2 (XEBEC board) 11H: gimixhd.bin - checksum 2436 - 2732 - 104521D */
- ROM_REGION( 0x10000, "xebec", 0)
- ROM_LOAD( "gimixhd.h11", 0x000000, 0x001000, CRC(35c12201) SHA1(51ac9052f9757d79c7f5bd3aa5d8421e98cfcc37) )
-ROM_END
-
-COMP( 1980, gimix, 0, 0, gimix, gimix, driver_device, 0, "Gimix", "Gimix 6809 System", MACHINE_IS_SKELETON | MACHINE_NOT_WORKING | MACHINE_NO_SOUND )