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isbc_208: add device [Carl]

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This commit is contained in:
cracyc 2016-11-26 15:56:05 -06:00
parent 1287e5687d
commit 1637c91a5c
4 changed files with 198 additions and 2 deletions
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2
scripts/target/mame/mess.lua
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@ -2025,6 +2025,8 @@ files {
MAME_DIR .. "src/mame/drivers/isbc8030.cpp",
MAME_DIR .. "src/mame/machine/isbc_215g.cpp",
MAME_DIR .. "src/mame/machine/isbc_215g.h",
MAME_DIR .. "src/mame/machine/isbc_208.cpp",
MAME_DIR .. "src/mame/machine/isbc_280.h",
MAME_DIR .. "src/mame/drivers/rex6000.cpp",
MAME_DIR .. "src/mame/drivers/sdk80.cpp",
MAME_DIR .. "src/mame/drivers/sdk85.cpp",

23
src/mame/drivers/isbc.cpp
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@ -10,6 +10,10 @@ Notes:
isbc86 commands: BYTE WORD REAL EREAL ROMTEST. ROMTEST works, the others hang.
Press capital-U to drop into the monitor on the isbc 86/05 and 86/30
The 86/05 can boot floppies with the b command but appears to mostly be
able to deal with 8" disks as it fails to properly load the irmx86 5.25" images.
****************************************************************************/
#include "bus/rs232/rs232.h"
@ -24,6 +28,7 @@ isbc86 commands: BYTE WORD REAL EREAL ROMTEST. ROMTEST works, the others hang.
#include "bus/centronics/ctronics.h"
#include "bus/isbx/isbx.h"
#include "machine/isbc_215g.h"
#include "machine/isbc_208.h"
class isbc_state : public driver_device
{
@ -72,7 +77,7 @@ void isbc_state::machine_reset()
static ADDRESS_MAP_START(rpc86_mem, AS_PROGRAM, 16, isbc_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x00000, 0x3ffff) AM_RAM
AM_RANGE(0x00000, 0xcffff) AM_RAM
AM_RANGE(0xfc000, 0xfffff) AM_ROM AM_REGION("user1",0)
ADDRESS_MAP_END
@ -92,6 +97,11 @@ static ADDRESS_MAP_START(rpc86_io, AS_IO, 16, isbc_state)
AM_RANGE(0x00de, 0x00df) AM_DEVREADWRITE8("uart8251", i8251_device, status_r, control_w, 0x00ff)
ADDRESS_MAP_END
static ADDRESS_MAP_START(isbc8605_io, AS_IO, 16, isbc_state)
AM_RANGE(0x0000, 0x002f) AM_DEVICE8("isbc_208", isbc_208_device, map, 0xffff)
AM_IMPORT_FROM(rpc86_io)
ADDRESS_MAP_END
static ADDRESS_MAP_START(isbc86_mem, AS_PROGRAM, 16, isbc_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x00000, 0xfbfff) AM_RAM
@ -276,6 +286,15 @@ static MACHINE_CONFIG_START( rpc86, isbc_state )
//MCFG_ISBX_SLOT_MINTR1_CALLBACK(DEVWRITELINE("pic_0", pic8259_device, ir6_w))
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( isbc8605, rpc86 )
MCFG_CPU_MODIFY("maincpu")
MCFG_CPU_IO_MAP(isbc8605_io)
MCFG_DEVICE_ADD("isbc_208", ISBC_208, 0)
MCFG_ISBC_208_MAINCPU("maincpu")
MCFG_ISBC_208_IRQ(DEVWRITELINE("pic_0", pic8259_device, ir5_w))
MACHINE_CONFIG_END
static MACHINE_CONFIG_START( isbc286, isbc_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", I80286, XTAL_16MHz/2)
@ -398,7 +417,7 @@ ROM_END
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 19??, rpc86, 0, 0, rpc86, isbc, driver_device, 0, "Intel", "RPC 86",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 1978, isbc86, 0, 0, isbc86, isbc, driver_device, 0, "Intel", "iSBC 86/12A",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 1981, isbc8605, 0, 0, rpc86, isbc, driver_device, 0, "Intel", "iSBC 86/05",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 1981, isbc8605, 0, 0, isbc8605, isbc, driver_device, 0, "Intel", "iSBC 86/05",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 1981, isbc8630, 0, 0, rpc86, isbc, driver_device, 0, "Intel", "iSBC 86/30",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 19??, isbc286, 0, 0, isbc286, isbc, driver_device, 0, "Intel", "iSBC 286",MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
COMP( 1983, isbc2861, 0, 0, isbc2861, isbc, driver_device, 0, "Intel", "iSBC 286/10", MACHINE_NO_SOUND)

122
src/mame/machine/isbc_208.cpp Normal file
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@ -0,0 +1,122 @@
// license:BSD-3-Clause
// copyright-holders:Carl
// TODO: multibus
#include "isbc_208.h"
const device_type ISBC_208 = &device_creator<isbc_208_device>;
isbc_208_device::isbc_208_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, ISBC_208, "ISBC 208 Flexible Disk Drive Controller", tag, owner, clock, "isbc_208", __FILE__),
m_dmac(*this, "dmac"),
m_fdc(*this, "fdc"),
m_out_irq_func(*this)
{
}
FLOPPY_FORMATS_MEMBER( isbc_208_device::floppy_formats )
FLOPPY_PC_FORMAT
FLOPPY_FORMATS_END
static SLOT_INTERFACE_START( isbc_208_floppies )
SLOT_INTERFACE( "8dd", FLOPPY_8_DSDD )
SLOT_INTERFACE( "525dd", FLOPPY_525_DD )
SLOT_INTERFACE_END
static MACHINE_CONFIG_FRAGMENT( isbc_208 )
MCFG_DEVICE_ADD("dmac", AM9517A, XTAL_8MHz/4)
MCFG_I8237_OUT_HREQ_CB(WRITELINE(isbc_208_device, hreq_w))
MCFG_I8237_OUT_EOP_CB(WRITELINE(isbc_208_device, out_eop_w))
MCFG_I8237_IN_MEMR_CB(READ8(isbc_208_device, dma_read_byte))
MCFG_I8237_OUT_MEMW_CB(WRITE8(isbc_208_device, dma_write_byte))
MCFG_I8237_IN_IOR_0_CB(DEVREAD8("fdc", i8272a_device, mdma_r))
MCFG_I8237_OUT_IOW_0_CB(DEVWRITE8("fdc", i8272a_device, mdma_w))
MCFG_I8272A_ADD("fdc", true)
MCFG_UPD765_INTRQ_CALLBACK(WRITELINE(isbc_208_device, irq_w))
MCFG_UPD765_DRQ_CALLBACK(DEVWRITELINE("dmac", am9517a_device, dreq0_w))
MCFG_FLOPPY_DRIVE_ADD("fdc:0", isbc_208_floppies, "525dd", isbc_208_device::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", isbc_208_floppies, "525dd", isbc_208_device::floppy_formats)
MACHINE_CONFIG_END
DEVICE_ADDRESS_MAP_START( map, 8, isbc_208_device )
AM_RANGE(0x00, 0x0f) AM_DEVREADWRITE("dmac", am9517a_device, read, write)
AM_RANGE(0x10, 0x11) AM_DEVICE("fdc", i8272a_device, map)
AM_RANGE(0x12, 0x15) AM_READWRITE(stat_r, aux_w)
ADDRESS_MAP_END
machine_config_constructor isbc_208_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( isbc_208 );
}
WRITE_LINE_MEMBER(isbc_208_device::out_eop_w)
{
m_fdc->tc_w(state);
}
WRITE_LINE_MEMBER(isbc_208_device::irq_w)
{
m_out_irq_func(state);
}
WRITE_LINE_MEMBER(isbc_208_device::hreq_w)
{
machine().device<cpu_device>(m_maincpu_tag)->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
/* Assert HLDA */
m_dmac->hack_w(state);
}
READ8_MEMBER(isbc_208_device::dma_read_byte)
{
return m_maincpu_mem->read_byte(((offset + (m_seg << 4)) & 0xfffff) | ((m_aux & 0xf0) << 16));
}
WRITE8_MEMBER(isbc_208_device::dma_write_byte)
{
return m_maincpu_mem->write_byte(((offset + (m_seg << 4)) & 0xfffff) | ((m_aux & 0xf0) << 16), data);
}
READ8_MEMBER(isbc_208_device::stat_r)
{
if(!offset)
return m_fdc->get_irq() ? 1 : 0;
return 0;
}
WRITE8_MEMBER( isbc_208_device::aux_w )
{
switch(offset)
{
case 0:
m_aux = data;
m_fdc->subdevice<floppy_connector>("0")->get_device()->mon_w(!(data & 1));
m_fdc->subdevice<floppy_connector>("1")->get_device()->mon_w(!(data & 2));
break;
case 1:
m_fdc->soft_reset();
m_dmac->reset();
break;
case 2:
m_seg = (m_seg & 0xff00) | data;
break;
case 3:
m_seg = (m_seg & 0xff) | (data << 8);
break;
}
}
void isbc_208_device::device_reset()
{
m_aux = 0;
m_seg = 0;
}
void isbc_208_device::device_start()
{
m_maincpu_mem = &machine().device<cpu_device>(m_maincpu_tag)->space(AS_PROGRAM);
m_out_irq_func.resolve_safe();
}

53
src/mame/machine/isbc_208.h Normal file
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@ -0,0 +1,53 @@
// license:BSD-3-Clause
// copyright-holders:Carl
#ifndef ISBC_208_H_
#define ISBC_208_H_
#include "emu.h"
#include "formats/pc_dsk.h"
#include "machine/upd765.h"
#include "machine/am9517a.h"
class isbc_208_device : public device_t
{
public:
isbc_208_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual machine_config_constructor device_mconfig_additions() const override;
DECLARE_ADDRESS_MAP(map, 8);
DECLARE_READ8_MEMBER(stat_r);
DECLARE_WRITE8_MEMBER(aux_w);
DECLARE_WRITE_LINE_MEMBER(out_eop_w);
DECLARE_WRITE_LINE_MEMBER(hreq_w);
DECLARE_READ8_MEMBER(dma_read_byte);
DECLARE_WRITE8_MEMBER(dma_write_byte);
DECLARE_WRITE_LINE_MEMBER(irq_w);
DECLARE_FLOPPY_FORMATS( floppy_formats );
template<class _Object> static devcb_base &static_set_irq_callback(device_t &device, _Object object) { return downcast<isbc_208_device &>(device).m_out_irq_func.set_callback(object); }
static void static_set_maincpu_tag(device_t &device, const char *maincpu_tag) { downcast<isbc_208_device &>(device).m_maincpu_tag = maincpu_tag; }
protected:
virtual void device_start() override;
virtual void device_reset() override;
private:
required_device<am9517a_device> m_dmac;
required_device<i8272a_device> m_fdc;
devcb_write_line m_out_irq_func;
u8 m_aux;
u16 m_seg;
const char *m_maincpu_tag;
address_space *m_maincpu_mem;
};
#define MCFG_ISBC_208_MAINCPU(_maincpu_tag) \
isbc_208_device::static_set_maincpu_tag(*device, _maincpu_tag);
#define MCFG_ISBC_208_IRQ(_irq_line) \
devcb = &isbc_208_device::static_set_irq_callback(*device, DEVCB_##_irq_line);
extern const device_type ISBC_208;
#endif /* ISBC_208_H_ */