Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-06-01 02:21:48 +03:00
Code Issues Actions 4 Packages Projects Releases Wiki Activity

(MESS) myb3k: Modernized floppy. (nw)

Browse Source
This commit is contained in:
Curt Coder 2014-05-20 21:16:48 +00:00
parent 874873a674
commit d256717e59
1 changed files with 25 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/mess/drivers/myb3k.c
View File

@ -15,9 +15,7 @@
#include "emu.h"
#include "cpu/i86/i86.h"
#include "video/mc6845.h"
#include "machine/wd17xx.h"
#include "imagedev/flopdrv.h"
#include "formats/basicdsk.h"
#include "machine/wd_fdc.h"
class myb3k_state : public driver_device
{
@ -27,12 +25,16 @@ public:
m_maincpu(*this, "maincpu"),
m_fdc(*this, "fdc"),
m_crtc(*this, "crtc"),
m_floppy0(*this, "fdc:0:8dsdd"),
m_floppy1(*this, "fdc:1:8dsdd"),
m_p_vram(*this, "p_vram"),
m_palette(*this, "palette") { }
required_device<cpu_device> m_maincpu;
required_device<mb8877_device> m_fdc;
required_device<mb8877_t> m_fdc;
required_device<mc6845_device> m_crtc;
required_device<floppy_image_device> m_floppy0;
required_device<floppy_image_device> m_floppy1;
DECLARE_WRITE8_MEMBER(myb3k_6845_address_w);
DECLARE_WRITE8_MEMBER(myb3k_6845_data_w);
DECLARE_WRITE8_MEMBER(myb3k_video_mode_w);
@ -121,15 +123,21 @@ WRITE8_MEMBER( myb3k_state::myb3k_video_mode_w )
/* ---- --xx horizontal step count (number of offsets of vram RAM data to skip, 64 >> n) */
m_vmode = data;
}
}
WRITE8_MEMBER( myb3k_state::myb3k_fdc_output_w )
{
/* TODO: complete guesswork! (it just does a 0x24 -> 0x20 in there) */
m_fdc->set_drive(data & 3);
floppy_get_device(machine(), data & 3)->floppy_mon_w(!(data & 4) ? 1: 0);
floppy_get_device(machine(), data & 3)->floppy_drive_set_ready_state(data & 0x4,0);
//m_fdc->set_side((data & 0x10)>>4);
floppy_image_device *floppy = NULL;
if (data & 1) floppy = m_floppy0;
if (data & 2) floppy = m_floppy1;
if (floppy)
{
floppy->mon_w(!(data & 4) ? 1: 0);
floppy->ss_w((data & 0x10)>>4);
}
}
static ADDRESS_MAP_START(myb3k_map, AS_PROGRAM, 8, myb3k_state)
@ -149,7 +157,7 @@ static ADDRESS_MAP_START(myb3k_io, AS_IO, 8, myb3k_state)
AM_RANGE(0x06, 0x06) AM_READ_PORT("DSW2")
AM_RANGE(0x1c, 0x1c) AM_WRITE(myb3k_6845_address_w)
AM_RANGE(0x1d, 0x1d) AM_WRITE(myb3k_6845_data_w)
AM_RANGE(0x20, 0x23) AM_DEVREADWRITE("fdc", mb8877_device, read, write) //FDC, almost likely wd17xx
AM_RANGE(0x20, 0x23) AM_DEVREADWRITE("fdc", mb8877_t, read, write) //FDC, almost likely wd17xx
AM_RANGE(0x24, 0x24) AM_WRITE(myb3k_fdc_output_w)
// AM_RANGE(0x520,0x524) mirror of above
ADDRESS_MAP_END
@ -233,12 +241,10 @@ static GFXDECODE_START( myb3k )
GFXDECODE_ENTRY( "ipl", 0x0000, myb3k_charlayout, 0, 1 )
GFXDECODE_END
static const floppy_interface myb3k_floppy_interface =
{
FLOPPY_STANDARD_5_25_DSDD_40, //todo
LEGACY_FLOPPY_OPTIONS_NAME(default),
NULL
};
static SLOT_INTERFACE_START( myb3k_floppies )
SLOT_INTERFACE( "525sssd", FLOPPY_525_SSSD )
SLOT_INTERFACE( "8dsdd", FLOPPY_8_DSDD )
SLOT_INTERFACE_END
static MACHINE_CONFIG_START( myb3k, myb3k_state )
/* basic machine hardware */
@ -246,7 +252,6 @@ static MACHINE_CONFIG_START( myb3k, myb3k_state )
MCFG_CPU_PROGRAM_MAP(myb3k_map)
MCFG_CPU_IO_MAP(myb3k_io)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
@ -264,10 +269,9 @@ static MACHINE_CONFIG_START( myb3k, myb3k_state )
MCFG_MC6845_SHOW_BORDER_AREA(false)
MCFG_MC6845_CHAR_WIDTH(8)
MCFG_DEVICE_ADD("fdc", MB8877, 0) // unknown type
MCFG_WD17XX_DEFAULT_DRIVE2_TAGS
MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(myb3k_floppy_interface)
MCFG_DEVICE_ADD("fdc", MB8877x, 2000000) // unknown type
MCFG_FLOPPY_DRIVE_ADD("fdc:0", myb3k_floppies, "8dsdd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", myb3k_floppies, "8dsdd", floppy_image_device::default_floppy_formats)
MACHINE_CONFIG_END
/* ROM definition */