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apple2: PC Transporter: halt V30 properly on startup, XT has 8-bit ISA, improved 6502 CGA framebuffer writes. [R. Belmont]

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This commit is contained in:
arbee 2016-04-13 22:41:13 -04:00
parent f81948b663
commit e4d5e29b21
1 changed files with 14 additions and 8 deletions
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22
src/devices/bus/a2bus/pc_xporter.cpp
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@ -91,6 +91,7 @@ MACHINE_CONFIG_FRAGMENT( pcxporter )
MCFG_CPU_PROGRAM_MAP(pc_map)
MCFG_CPU_IO_MAP(pc_io)
MCFG_CPU_IRQ_ACKNOWLEDGE_DEVICE("pic8259", pic8259_device, inta_cb)
MCFG_DEVICE_DISABLE()
MCFG_DEVICE_ADD("pit8253", PIT8253, 0)
MCFG_PIT8253_CLK0(XTAL_14_31818MHz/12) /* heartbeat IRQ */
@ -124,8 +125,8 @@ MACHINE_CONFIG_FRAGMENT( pcxporter )
MCFG_I8255_OUT_PORTB_CB(WRITE8(a2bus_pcxporter_device, pc_ppi_portb_w))
MCFG_I8255_IN_PORTC_CB(READ8(a2bus_pcxporter_device, pc_ppi_portc_r))
MCFG_DEVICE_ADD("isa", ISA16, 0)
MCFG_ISA16_CPU("^v30")
MCFG_DEVICE_ADD("isa", ISA8, 0)
MCFG_ISA8_CPU("^v30")
MCFG_ISA_OUT_IRQ2_CB(DEVWRITELINE("pic8259", pic8259_device, ir2_w))
MCFG_ISA_OUT_IRQ3_CB(DEVWRITELINE("pic8259", pic8259_device, ir3_w))
MCFG_ISA_OUT_IRQ4_CB(DEVWRITELINE("pic8259", pic8259_device, ir4_w))
@ -146,8 +147,8 @@ MACHINE_CONFIG_FRAGMENT( pcxporter )
MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MCFG_ISA16_SLOT_ADD("isa", "isa1", pc_isa8_cards, "cga", true)
MCFG_ISA16_SLOT_ADD("isa", "isa2", pc_isa8_cards, "fdc_xt", true)
MCFG_ISA8_SLOT_ADD("isa", "isa1", pc_isa8_cards, "cga", true)
MCFG_ISA8_SLOT_ADD("isa", "isa2", pc_isa8_cards, "fdc_xt", true)
MACHINE_CONFIG_END
/***************************************************************************
@ -356,15 +357,19 @@ void a2bus_pcxporter_device::write_c800(address_space &space, UINT16 offset, UIN
case 0x703: // write w/increment
m_ram[m_offset] = data;
if (m_offset >= 0xb0000 && m_offset <= 0xb7fff) m_pcmem_space->write_byte(m_offset+0x8000, data);
if (m_offset >= 0xb8000 && m_offset <= 0xbffff) m_pcmem_space->write_byte(m_offset, data);
if (m_offset >= 0xb0000 && m_offset <= 0xb3fff) m_pcmem_space->write_byte(m_offset+0x8000, data);
else if (m_offset >= 0xb4000 && m_offset <= 0xb7fff) m_pcmem_space->write_byte(m_offset+0x4000, data);
else if (m_offset >= 0xb8000 && m_offset <= 0xbbfff) m_pcmem_space->write_byte(m_offset, data);
else if (m_offset >= 0xbc000 && m_offset <= 0xbffff) m_pcmem_space->write_byte(m_offset-0x4000, data);
m_offset++;
break;
case 0x704: // write w/o increment
m_ram[m_offset] = data;
if (m_offset >= 0xb0000 && m_offset <= 0xb7fff) m_pcmem_space->write_byte(m_offset+0x8000, data);
if (m_offset >= 0xb8000 && m_offset <= 0xbffff) m_pcmem_space->write_byte(m_offset, data);
if (m_offset >= 0xb0000 && m_offset <= 0xb3fff) m_pcmem_space->write_byte(m_offset+0x8000, data);
else if (m_offset >= 0xb4000 && m_offset <= 0xb7fff) m_pcmem_space->write_byte(m_offset+0x4000, data);
else if (m_offset >= 0xb8000 && m_offset <= 0xbbfff) m_pcmem_space->write_byte(m_offset, data);
else if (m_offset >= 0xbc000 && m_offset <= 0xbffff) m_pcmem_space->write_byte(m_offset-0x4000, data);
break;
case 0x72c: // CGA 6845 register select
@ -421,6 +426,7 @@ void a2bus_pcxporter_device::write_c800(address_space &space, UINT16 offset, UIN
}
m_v30->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
m_v30->resume(SUSPEND_REASON_HALT | SUSPEND_REASON_DISABLE);
}
break;