Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-21 05:08:54 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

(MESS) ngen: connected FDC to 80186 DMA channel 1, corrected floppy setup. Floppy disks now start to boot up.

Browse Source
This commit is contained in:
mahlemiut 2014-12-13 21:38:01 +13:00
parent da0e67fbc4
commit 75f0ad8a43
1 changed files with 20 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/mess/drivers/ngen.c
View File

@ -119,6 +119,7 @@ public:
DECLARE_WRITE8_MEMBER( dma_3_dack_w ){ }
DECLARE_WRITE_LINE_MEMBER(fdc_irq_w);
DECLARE_WRITE_LINE_MEMBER(fdc_drq_w);
DECLARE_WRITE8_MEMBER(fdc_control_w);
protected:
virtual void machine_reset();
@ -379,12 +380,13 @@ WRITE16_MEMBER(ngen_state::port00_w)
}
// returns X-bus module ID (what is the low byte for?)
// For now, we'll hard code a floppy disk module (or try to)
READ16_MEMBER(ngen_state::port00_r)
{
if(m_port00 > 0)
m_maincpu->set_input_line(INPUT_LINE_NMI,PULSE_LINE);
if(m_port00 == 0)
return 0x4000; // module ID of 0x40 = dual floppy disk module (need hardware manual to find other module IDs)
return 0x0040; // module ID of 0x40 = dual floppy disk module (need hardware manual to find other module IDs)
else
return 0x0080; // invalid device?
}
@ -396,7 +398,14 @@ WRITE_LINE_MEMBER(ngen_state::fdc_irq_w)
WRITE_LINE_MEMBER(ngen_state::fdc_drq_w)
{
// TODO
m_dmac->dreq3_w(state);
}
WRITE8_MEMBER(ngen_state::fdc_control_w)
{
m_fdc->set_floppy(m_fd0->get_device());
m_fd0->get_device()->mon_w((~data) & 0x80);
m_fdc->dden_w(~data & 0x04);
}
WRITE_LINE_MEMBER( ngen_state::dma_hrq_changed )
@ -474,9 +483,11 @@ MC6845_UPDATE_ROW( ngen_state::crtc_update_row )
void ngen_state::machine_reset()
{
m_port00 = 0;
m_control = 0;
m_viduart->write_dsr(0);
m_viduart->write_cts(0);
m_fd0->get_device()->set_rpm(300);
}
static ADDRESS_MAP_START( ngen_mem, AS_PROGRAM, 16, ngen_state )
@ -490,7 +501,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( ngen_io, AS_IO, 16, ngen_state )
AM_RANGE(0x0000, 0x0001) AM_READWRITE(port00_r,port00_w)
AM_RANGE(0x0100, 0x0107) AM_DEVREADWRITE8("fdc",wd2797_t,read,write,0x00ff) // a guess for now
// port 0x0108 is used also, maybe for motor control/side select?
AM_RANGE(0x0108, 0x0109) AM_WRITE8(fdc_control_w,0x00ff)
ADDRESS_MAP_END
static ADDRESS_MAP_START( ngen386_mem, AS_PROGRAM, 32, ngen_state )
@ -517,7 +528,7 @@ static SLOT_INTERFACE_START(keyboard)
SLOT_INTERFACE_END
static SLOT_INTERFACE_START( ngen_floppies )
SLOT_INTERFACE( "525hd", FLOPPY_525_HD )
SLOT_INTERFACE( "525qd", FLOPPY_525_QD )
SLOT_INTERFACE_END
static MACHINE_CONFIG_START( ngen, ngen_state )
@ -577,7 +588,7 @@ static MACHINE_CONFIG_START( ngen, ngen_state )
MCFG_RS232_DCD_HANDLER(DEVWRITELINE("iouart", upd7201_device, dcdb_w))
MCFG_RS232_RI_HANDLER(DEVWRITELINE("iouart", upd7201_device, rib_w))
// TODO: SCN2652 MPCC, used for RS-422 cluster communications?
// TODO: SCN2652 MPCC (not implemented), used for RS-422 cluster communications?
// video board
MCFG_SCREEN_ADD("screen", RASTER)
@ -603,13 +614,14 @@ static MACHINE_CONFIG_START( ngen, ngen_state )
MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(ngen_state,timer_clk_out))
// floppy disk / hard disk module (WD2797 FDC, WD1010 HDC, plus an 8253 timer for each)
MCFG_WD2797x_ADD("fdc", XTAL_20MHz / 10)
MCFG_WD2797x_ADD("fdc", XTAL_20MHz / 20)
MCFG_WD_FDC_INTRQ_CALLBACK(WRITELINE(ngen_state,fdc_irq_w))
MCFG_WD_FDC_DRQ_CALLBACK(WRITELINE(ngen_state,fdc_drq_w))
MCFG_WD_FDC_DRQ_CALLBACK(DEVWRITELINE("maincpu",i80186_cpu_device,drq1_w))
MCFG_WD_FDC_FORCE_READY
MCFG_DEVICE_ADD("fdc_timer", PIT8253, 0)
// TODO: WD1010 HDC (not implemented)
MCFG_DEVICE_ADD("hdc_timer", PIT8253, 0)
MCFG_FLOPPY_DRIVE_ADD("fdc:0", ngen_floppies, "525hd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:0", ngen_floppies, "525qd", floppy_image_device::default_floppy_formats)
MACHINE_CONFIG_END