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https://github.com/holub/mame
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(MESS) super80 : starting to add fdc support
This commit is contained in:
Robbbert
parent
cf3d95315f
commit
473f022573
@ -1,6 +1,6 @@
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// license:MAME
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// copyright-holders:Robbbert
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/*
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/*****************************************************************************
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Super80.c written by Robbbert, 2005-2010.
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@ -181,6 +181,32 @@ points to the ROMs. When a machine reset occurs, bank 1 is switched in. A timer
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after 4 bytes are read, bank 0 is selected. The timer is as close as can be to real operation of the
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hardware.
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Super80 disk WD2793, Z80DMA:
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Port(hex) Role Comment
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--------- ----- --------
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30 DMA I/O Z80A DMA Controller Command Register
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38 WDSTCM WD2793 Command Status
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39 WDTRK WD2793 Track Register
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3A WDSEC WD2793 Sector Register
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3B WDDATA WD2793 Data Register
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3E UFDSTAT FDD and WD2793 Status input
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Bit0 INTRQ 1 = WD2793 Interrupt Request
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Bit1 DATARQ 1 = Data Ready to Receive or Send
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Bit2 MOTOR ON 1 = FDD Motor On
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3F UFDCOM WD2793 Command Register output
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Bit0 5/8 1 = 8" Drive Selected
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Bit1 ENMF* 0 = 1MHz, 1 = 2MHz (for 8" double density)
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Bit2 DR0SEL 1 = Drive 0 (Drive A) selected
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Bit3 DR1SEL 1 = Drive 1 (Drive B) selected
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Bit4 DR2SEL 1 = Drive 2 (Drive C) selected
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Bit5 DR3SEL 1 = Drive 3 (Drive D) selected
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Bit6 SIDESEL 0 = Select Disk side 0, 1 = Select Disk side 1
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Bit7 DDEN* 0 = MFM (Double Density), 1 = FM (Single Density)
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***********************************************************************************************************/
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#include "super80.lh"
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@ -256,6 +282,10 @@ static ADDRESS_MAP_START( super80r_io, AS_IO, 8, super80_state )
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AM_RANGE(0x10, 0x10) AM_WRITE(super80v_10_w)
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AM_RANGE(0x11, 0x11) AM_DEVREAD("crtc", mc6845_device, register_r)
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AM_RANGE(0x11, 0x11) AM_WRITE(super80v_11_w)
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AM_RANGE(0x30, 0x30) AM_DEVREADWRITE("dma", z80dma_device, read, write)
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AM_RANGE(0x38, 0x3b) AM_DEVREADWRITE("fdc", wd2793_t, read, write)
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AM_RANGE(0x3e, 0x3e) AM_READ(port3e_r)
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AM_RANGE(0x3f, 0x3f) AM_WRITE(port3f_w)
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AM_RANGE(0xdc, 0xdc) AM_DEVREAD("cent_status_in", input_buffer_device, read)
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AM_RANGE(0xdc, 0xdc) AM_WRITE(super80_dc_w)
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AM_RANGE(0xe0, 0xe0) AM_MIRROR(0x14) AM_WRITE(super80r_f0_w)
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@ -634,6 +664,59 @@ static MC6845_INTERFACE( super80v_crtc )
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NULL
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};
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//-------------------------------------------------
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// Z80DMA_INTERFACE( dma_intf )
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//-------------------------------------------------
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WRITE_LINE_MEMBER( super80_state::busreq_w )
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{
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// since our Z80 has no support for BUSACK, we assume it is granted immediately
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m_maincpu->set_input_line(Z80_INPUT_LINE_BUSRQ, state);
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m_maincpu->set_input_line(INPUT_LINE_HALT, state); // do we need this?
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m_dma->bai_w(state); // tell dma that bus has been granted
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}
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READ8_MEMBER(super80_state::memory_read_byte)
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{
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address_space& prog_space = m_maincpu->space(AS_PROGRAM);
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return prog_space.read_byte(offset);
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}
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WRITE8_MEMBER(super80_state::memory_write_byte)
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{
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address_space& prog_space = m_maincpu->space(AS_PROGRAM);
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prog_space.write_byte(offset, data);
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}
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READ8_MEMBER(super80_state::io_read_byte)
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{
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address_space& prog_space = m_maincpu->space(AS_IO);
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return prog_space.read_byte(offset);
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}
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WRITE8_MEMBER(super80_state::io_write_byte)
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{
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address_space& prog_space = m_maincpu->space(AS_IO);
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prog_space.write_byte(offset, data);
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}
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// busack on cpu connects to bai pin
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static Z80DMA_INTERFACE( dma_intf )
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{
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//DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_HALT), //busreq - connects to busreq on cpu
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DEVCB_DRIVER_LINE_MEMBER(super80_state, busreq_w), //busreq - connects to busreq on cpu
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DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_IRQ0), //int/pulse - connects to IRQ0 on cpu
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DEVCB_NULL, //ba0 - not connected
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DEVCB_DRIVER_MEMBER(super80_state, memory_read_byte),
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DEVCB_DRIVER_MEMBER(super80_state, memory_write_byte),
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DEVCB_DRIVER_MEMBER(super80_state, io_read_byte),
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DEVCB_DRIVER_MEMBER(super80_state, io_write_byte),
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};
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static SLOT_INTERFACE_START( super80_floppies )
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SLOT_INTERFACE( "525dd", FLOPPY_525_DD )
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SLOT_INTERFACE_END
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static MACHINE_CONFIG_START( super80, super80_state )
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/* basic machine hardware */
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@ -757,6 +840,10 @@ MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( super80r, super80v )
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MCFG_CPU_MODIFY("maincpu")
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MCFG_CPU_IO_MAP(super80r_io)
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MCFG_Z80DMA_ADD("dma", MASTER_CLOCK/6, dma_intf)
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MCFG_WD2793x_ADD("fdc", XTAL_2MHz)
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MCFG_FLOPPY_DRIVE_ADD("fdc:0", super80_floppies, "525dd", floppy_image_device::default_floppy_formats)
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MCFG_FLOPPY_DRIVE_ADD("fdc:1", super80_floppies, "525dd", floppy_image_device::default_floppy_formats)
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MACHINE_CONFIG_END
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/**************************** ROMS *****************************************************************/
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@ -10,6 +10,9 @@
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#include "bus/centronics/ctronics.h"
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#include "video/mc6845.h"
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#include "machine/z80pio.h"
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#include "machine/z80dma.h"
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#include "machine/wd_fdc.h"
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/* Bits in shared variable:
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d5 cassette LED
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@ -23,71 +26,60 @@ class super80_state : public driver_device
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{
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public:
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super80_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_pio(*this, "z80pio"),
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m_cassette(*this, "cassette"),
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m_wave(*this, WAVE_TAG),
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m_speaker(*this, "speaker"),
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m_centronics(*this, "centronics"),
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m_cent_data_out(*this, "cent_data_out"),
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m_6845(*this, "crtc"),
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m_io_dsw(*this, "DSW"),
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m_io_x0(*this, "X0"),
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m_io_x1(*this, "X1"),
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m_io_x2(*this, "X2"),
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m_io_x3(*this, "X3"),
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m_io_x4(*this, "X4"),
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m_io_x5(*this, "X5"),
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m_io_x6(*this, "X6"),
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m_io_x7(*this, "X7"),
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m_io_config(*this, "CONFIG"),
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m_palette(*this, "palette")
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: driver_device(mconfig, type, tag)
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, m_palette(*this, "palette")
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, m_maincpu(*this, "maincpu")
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, m_pio(*this, "z80pio")
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, m_dma(*this, "dma")
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, m_cassette(*this, "cassette")
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, m_wave(*this, WAVE_TAG)
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, m_speaker(*this, "speaker")
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, m_centronics(*this, "centronics")
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, m_cent_data_out(*this, "cent_data_out")
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, m_crtc(*this, "crtc")
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, m_io_dsw(*this, "DSW")
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, m_io_x0(*this, "X0")
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, m_io_x1(*this, "X1")
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, m_io_x2(*this, "X2")
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, m_io_x3(*this, "X3")
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, m_io_x4(*this, "X4")
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, m_io_x5(*this, "X5")
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, m_io_x6(*this, "X6")
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, m_io_x7(*this, "X7")
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, m_io_config(*this, "CONFIG")
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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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{ }
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DECLARE_READ8_MEMBER( super80v_low_r );
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DECLARE_READ8_MEMBER( super80v_high_r );
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DECLARE_WRITE8_MEMBER( super80v_low_w );
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DECLARE_WRITE8_MEMBER( super80v_high_w );
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DECLARE_WRITE8_MEMBER( super80v_10_w );
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DECLARE_WRITE8_MEMBER( super80v_11_w );
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DECLARE_WRITE8_MEMBER( super80_f1_w );
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DECLARE_READ8_MEMBER( super80_dc_r );
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DECLARE_READ8_MEMBER( super80_f2_r );
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DECLARE_WRITE8_MEMBER( super80_dc_w );
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DECLARE_WRITE8_MEMBER( super80_f0_w );
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DECLARE_WRITE8_MEMBER( super80r_f0_w );
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DECLARE_READ8_MEMBER( super80_read_ff );
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DECLARE_WRITE8_MEMBER( pio_port_a_w );
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DECLARE_READ8_MEMBER( pio_port_b_r );
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virtual void machine_reset();
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UINT8 m_shared;
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UINT8 m_keylatch;
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UINT8 m_cass_data[4];
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UINT8 m_int_sw;
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UINT8 m_last_data;
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UINT16 m_vidpg;
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UINT8 m_current_palette;
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UINT8 m_current_charset;
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const UINT8 *m_p_chargen;
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UINT8 m_s_options;
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UINT8 m_mc6845_cursor[16];
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UINT8 m_mc6845_reg[32];
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UINT8 m_mc6845_ind;
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UINT8 m_framecnt;
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UINT8 m_speed;
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UINT8 m_flash;
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UINT16 m_cursor;
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UINT8 *m_p_videoram;
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UINT8 *m_p_colorram;
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UINT8 *m_p_pcgram;
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UINT8 *m_p_ram;
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void mc6845_cursor_configure();
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DECLARE_READ8_MEMBER(super80v_low_r);
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DECLARE_READ8_MEMBER(super80v_high_r);
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DECLARE_WRITE8_MEMBER(super80v_low_w);
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DECLARE_WRITE8_MEMBER(super80v_high_w);
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DECLARE_WRITE8_MEMBER(super80v_10_w);
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DECLARE_WRITE8_MEMBER(super80v_11_w);
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DECLARE_READ8_MEMBER(port3e_r);
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DECLARE_WRITE8_MEMBER(port3f_w);
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DECLARE_WRITE8_MEMBER(super80_f1_w);
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DECLARE_READ8_MEMBER(super80_dc_r);
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DECLARE_READ8_MEMBER(super80_f2_r);
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DECLARE_WRITE8_MEMBER(super80_dc_w);
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DECLARE_WRITE8_MEMBER(super80_f0_w);
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DECLARE_WRITE8_MEMBER(super80r_f0_w);
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DECLARE_READ8_MEMBER(super80_read_ff);
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DECLARE_WRITE_LINE_MEMBER(busreq_w);
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DECLARE_READ8_MEMBER(memory_read_byte);
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DECLARE_WRITE8_MEMBER(memory_write_byte);
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DECLARE_READ8_MEMBER(io_read_byte);
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DECLARE_WRITE8_MEMBER(io_write_byte);
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DECLARE_WRITE8_MEMBER(pio_port_a_w);
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DECLARE_READ8_MEMBER(pio_port_b_r);
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DECLARE_DRIVER_INIT(super80);
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DECLARE_DRIVER_INIT(super80v);
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DECLARE_VIDEO_START(super80);
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DECLARE_VIDEO_START(super80v);
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DECLARE_PALETTE_INIT(super80m);
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DECLARE_QUICKLOAD_LOAD_MEMBER(super80);
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UINT32 screen_update_super80(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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UINT32 screen_update_super80v(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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UINT32 screen_update_super80d(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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@ -97,14 +89,43 @@ public:
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TIMER_CALLBACK_MEMBER(super80_timer);
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TIMER_CALLBACK_MEMBER(super80_reset);
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TIMER_CALLBACK_MEMBER(super80_halfspeed);
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UINT8 m_s_options;
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UINT8 m_shared;
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UINT8 *m_p_videoram;
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UINT8 *m_p_colorram;
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UINT8 *m_p_pcgram;
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UINT8 m_framecnt;
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UINT8 m_speed;
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UINT8 m_flash;
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UINT16 m_cursor;
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UINT8 m_mc6845_cursor[16];
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required_device<palette_device> m_palette;
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private:
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virtual void machine_reset();
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UINT8 m_keylatch;
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UINT8 m_cass_data[4];
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UINT8 m_int_sw;
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UINT8 m_last_data;
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UINT16 m_vidpg;
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UINT8 m_current_palette;
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UINT8 m_current_charset;
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const UINT8 *m_p_chargen;
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UINT8 m_mc6845_reg[32];
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UINT8 m_mc6845_ind;
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UINT8 *m_p_ram;
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void mc6845_cursor_configure();
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void palette_set_colors_rgb(const UINT8 *colors);
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void super80_cassette_motor(UINT8 data);
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void driver_init_common();
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required_device<cpu_device> m_maincpu;
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required_device<z80pio_device> m_pio;
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optional_device<z80dma_device> m_dma;
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required_device<cassette_image_device> m_cassette;
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required_device<wave_device> m_wave;
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required_device<speaker_sound_device> m_speaker;
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required_device<centronics_device> m_centronics;
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required_device<output_latch_device> m_cent_data_out;
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optional_device<mc6845_device> m_6845;
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optional_device<mc6845_device> m_crtc;
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required_ioport m_io_dsw;
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required_ioport m_io_x0;
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required_ioport m_io_x1;
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@ -115,11 +136,9 @@ public:
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required_ioport m_io_x6;
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required_ioport m_io_x7;
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required_ioport m_io_config;
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required_device<palette_device> m_palette;
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void palette_set_colors_rgb(const UINT8 *colors);
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void super80_cassette_motor( UINT8 data );
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void driver_init_common( );
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DECLARE_QUICKLOAD_LOAD_MEMBER( super80 );
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optional_device<wd2793_t> m_fdc;
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optional_device<floppy_connector> m_floppy0;
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optional_device<floppy_connector> m_floppy1;
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};
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@ -11,7 +11,7 @@ WRITE8_MEMBER( super80_state::pio_port_a_w )
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m_keylatch = data;
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};
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READ8_MEMBER(super80_state::pio_port_b_r)
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READ8_MEMBER( super80_state::pio_port_b_r )
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{
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UINT8 data = 0xff;
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@ -150,6 +150,15 @@ TIMER_CALLBACK_MEMBER(super80_state::super80_halfspeed)
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/**************************** I/O PORTS *****************************************************************/
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READ8_MEMBER( super80_state::port3e_r )
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{
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return 0xff;
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}
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WRITE8_MEMBER( super80_state::port3f_w )
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{
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}
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READ8_MEMBER( super80_state::super80_f2_r )
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{
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UINT8 data = m_io_dsw->read() & 0xf0; // dip switches on pcb
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@ -198,7 +207,7 @@ void super80_state::machine_reset()
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membank("boot")->set_entry(1);
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}
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void super80_state::driver_init_common( )
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void super80_state::driver_init_common()
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{
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UINT8 *RAM = memregion("maincpu")->base();
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membank("boot")->configure_entries(0, 2, &RAM[0x0000], 0xc000);
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@ -1,4 +1,4 @@
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/* Super80.c written by Robbbert, 2005-2010. See the MESS wiki for documentation. */
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/* Super80.c written by Robbbert, 2005-2010. See the driver source for documentation. */
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/* Notes on using MAME MC6845 Device (MMD).
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1. Speed of MMD is about 20% slower than pre-MMD coding
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@ -382,7 +382,7 @@ UINT32 super80_state::screen_update_super80v(screen_device &screen, bitmap_rgb32
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m_cursor = (m_mc6845_reg[14]<<8) | m_mc6845_reg[15]; // get cursor position
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m_s_options=m_io_config->read();
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output_set_value("cass_led",BIT(m_shared, 5));
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m_6845->screen_update(screen, bitmap, cliprect);
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m_crtc->screen_update(screen, bitmap, cliprect);
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return 0;
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}
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@ -446,12 +446,12 @@ WRITE8_MEMBER( super80_state::super80v_10_w )
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{
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data &= 0x1f;
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m_mc6845_ind = data;
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m_6845->address_w( space, 0, data );
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m_crtc->address_w( space, 0, data );
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}
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WRITE8_MEMBER( super80_state::super80v_11_w )
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{
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m_mc6845_reg[m_mc6845_ind] = data & mc6845_mask[m_mc6845_ind]; /* save data in register */
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m_6845->register_w( space, 0, data );
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m_crtc->register_w( space, 0, data );
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if ((m_mc6845_ind > 8) && (m_mc6845_ind < 12)) mc6845_cursor_configure(); /* adjust cursor shape - remove when mame fixed */
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}
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