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r9751: Add i8237 dma callbacks

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This commit is contained in:
Brandon Munger 2015-08-10 23:08:47 -04:00
parent f4b1a41d26
commit 1f72043047
2 changed files with 71 additions and 15 deletions
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70
src/emu/machine/pdc.c
View File

@ -66,7 +66,7 @@ ADDRESS_MAP_END
//-------------------------------------------------
static ADDRESS_MAP_START( pdc_io, AS_IO, 8, pdc_device )
//AM_RANGE(0x40, 0x41) AM_DEVICE(HDC_TAG, hdc9234_device, map) AM_MIRROR(0xFF00)
//AM_RANGE(0x40, 0x41) AM_DEVICE(HDC_TAG, hdc9224_device, map) AM_MIRROR(0xFF00)
AM_RANGE(0x42, 0x43) AM_DEVICE(FDC_TAG, upd765a_device, map) AM_MIRROR(0xFF00)
ADDRESS_MAP_END
@ -128,16 +128,28 @@ static MACHINE_CONFIG_FRAGMENT( pdc )
// MCFG_64H156_ATN_CALLBACK(WRITELINE(c1541_base_t, atn_w))
// MCFG_64H156_BYTE_CALLBACK(WRITELINE(c1541_base_t, byte_w))
// MCFG_FLOPPY_DRIVE_ADD(C64H156_TAG":0", c1540_floppies, "525ssqd", c1541_base_t::floppy_formats)
// upD765a FDC
// MCFG_UPD765A_ADD("upd765a", true, false)
MCFG_UPD765A_ADD(FDC_TAG, true, false)
// MCFG_FLOPPY_DRIVE_ADD(FDC_TAG, pdc_floppies, "35hd", pdc_device::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD(FDC_TAG":0", pdc_floppies, "35hd", pdc_device::floppy_formats)
// MCFG_UPD765_INTRQ_CALLBACK(DEVWRITELINE("ctc", z80ctc_device, trg3))
MCFG_UPD765_DRQ_CALLBACK(DEVWRITELINE("8237dma", am9517a_device, dreq0_w)) MCFG_DEVCB_INVERT
// uPD765A DMA Controller
MCFG_DEVICE_ADD("8237dma", AM9517A, XTAL_14_31818MHz/2) // Verify XTAL
MCFG_I8237_IN_MEMR_CB(READ8(pdc_device, memory_read_byte))
MCFG_I8237_OUT_MEMW_CB(WRITE8(pdc_device, memory_write_byte))
// MCFG_Ii8237_IN_MEMR_CB(READ8(pdc_device, memory_read_byte))
// MCFG_Ii8237_OUT_MEMW_CB(WRITE8(pdc_device, memory_write_byte))
MCFG_I8237_OUT_HREQ_CB(WRITELINE(pdc_device, i8237_hreq_w))
MCFG_I8237_OUT_EOP_CB(WRITELINE(pdc_device, i8237_eop_w))
MCFG_I8237_IN_MEMR_CB(READ8(pdc_device, i8237_dma_mem_r))
MCFG_I8237_OUT_MEMW_CB(WRITE8(pdc_device, i8237_dma_mem_w))
MCFG_I8237_IN_IOR_0_CB(READ8(pdc_device, i8237_fdc_dma_r))
MCFG_I8237_OUT_IOW_0_CB(WRITE8(pdc_device, i8237_fdc_dma_w))
// MCFG_AM9517A_OUT_DACK_0_CB(WRITELINE(pdc_device, fdc_dack_w))
MCFG_DEVICE_ADD(HDC_TAG, HDC9234, 0)
MCFG_DEVICE_ADD(HDC_TAG, HDC9224, 0)
MCFG_MFM_HARDDISK_CONN_ADD("h1", pdc_harddisks, NULL, MFM_BYTE, 3000, 20, MFMHD_GEN_FORMAT)
MACHINE_CONFIG_END
@ -174,7 +186,7 @@ pdc_device::pdc_device(const machine_config &mconfig, const char *tag, device_t
m_dma8237(*this, "8237dma"),
m_fdc(*this, FDC_TAG),
m_floppy(*this, FDC_TAG ":0"),
m_hdc9234(*this, HDC_TAG),
m_hdc9224(*this, HDC_TAG),
// m_harddisk(*this, "h1"),
//m_address(*this, "ADDRESS"),
//m_data_out(1),
@ -226,15 +238,51 @@ void pdc_device::device_reset()
// m_ga->ted_w(1);
}
READ8_MEMBER(pdc_device::memory_read_byte)
//-------------------------------------------------
// I8237 DMA
//-------------------------------------------------
//READ8_MEMBER(pdc_device::memory_read_byte)
//{
// address_space& prog_space = m_pdccpu->space(AS_PROGRAM);
// return prog_space.read_byte(offset);
//}
//WRITE8_MEMBER(pdc_device::memory_write_byte)
//{
// address_space& prog_space = m_pdccpu->space(AS_PROGRAM);
// return prog_space.write_byte(offset, data);
//}
WRITE_LINE_MEMBER(pdc_device::i8237_hreq_w)
{
address_space& prog_space = m_pdccpu->space(AS_PROGRAM);
return prog_space.read_byte(offset);
m_pdccpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
m_dma8237->hack_w(state);
}
WRITE8_MEMBER(pdc_device::memory_write_byte)
WRITE_LINE_MEMBER(pdc_device::i8237_eop_w)
{
address_space& prog_space = m_pdccpu->space(AS_PROGRAM);
return prog_space.write_byte(offset, data);
m_fdc->tc_w(state);
}
READ8_MEMBER(pdc_device::i8237_dma_mem_r)
{
return m_pdccpu->space(AS_PROGRAM).read_byte(offset);
}
WRITE8_MEMBER(pdc_device::i8237_dma_mem_w)
{
m_pdccpu->space(AS_PROGRAM).write_byte(offset,data);
}
READ8_MEMBER(pdc_device::i8237_fdc_dma_r)
{
UINT8 ret = m_fdc->dma_r();
return ret;
}
WRITE8_MEMBER(pdc_device::i8237_fdc_dma_w)
{
m_fdc->dma_w(data);
}

16
src/emu/machine/pdc.h
View File

@ -16,7 +16,7 @@
#include "machine/upd765.h"
#include "machine/am9517a.h"
#include "formats/pc_dsk.h"
#include "machine/hdc9234.h"
#include "machine/hdc92x4.h"
#include "imagedev/mfmhd.h"
//**************************************************************************
@ -52,8 +52,16 @@ public:
// DECLARE_WRITE8_MEMBER( via1_pb_w );
// DECLARE_WRITE_LINE_MEMBER( atn_w );
// DECLARE_WRITE_LINE_MEMBER( byte_w );
DECLARE_READ8_MEMBER(memory_read_byte);
DECLARE_WRITE8_MEMBER(memory_write_byte);
// DECLARE_READ8_MEMBER(memory_read_byte);
// DECLARE_WRITE8_MEMBER(memory_write_byte);
DECLARE_WRITE_LINE_MEMBER(i8237_hreq_w);
DECLARE_WRITE_LINE_MEMBER(i8237_eop_w);
DECLARE_READ8_MEMBER(i8237_dma_mem_r);
DECLARE_WRITE8_MEMBER(i8237_dma_mem_w);
DECLARE_READ8_MEMBER(i8237_fdc_dma_r);
DECLARE_WRITE8_MEMBER(i8237_fdc_dma_w);
DECLARE_FLOPPY_FORMATS( floppy_formats );
@ -86,7 +94,7 @@ protected:
required_device<am9517a_device> m_dma8237;
required_device<upd765a_device> m_fdc;
required_device<floppy_connector> m_floppy;
optional_device<hdc9234_device> m_hdc9234;
optional_device<hdc9224_device> m_hdc9224;
mfm_harddisk_device* m_harddisk;
// required_ioport m_address;
required_shared_ptr<UINT8> m_pdc_ram;