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alphatpx: add 8085-8088 comms, starts dos but errors out (nw)

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This commit is contained in:
cracyc 2018-02-24 22:45:34 -06:00
parent 877683f4f1
commit f07b93b053
1 changed files with 56 additions and 3 deletions
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59
src/mame/drivers/alphatpx.cpp
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@ -72,6 +72,7 @@
#include "machine/i8251.h"
#include "machine/wd_fdc.h"
#include "machine/pic8259.h"
#include "machine/pit8253.h"
#include "video/tms9927.h"
#include "sound/beep.h"
#include "screen.h"
@ -189,6 +190,10 @@ public:
DECLARE_WRITE8_MEMBER(beep_w);
DECLARE_WRITE8_MEMBER(bank_w);
DECLARE_READ8_MEMBER(start88_r);
DECLARE_READ8_MEMBER(comm85_r);
DECLARE_WRITE8_MEMBER(comm85_w);
DECLARE_READ8_MEMBER(comm88_r);
DECLARE_WRITE8_MEMBER(comm88_w);
void alphatp3(machine_config &config);
void alphatp30(machine_config &config);
@ -219,6 +224,8 @@ private:
required_shared_ptr<u8> m_ram;
floppy_image_device *m_curfloppy;
bool m_fdc_irq, m_fdc_drq, m_fdc_hld;
u8 m_85_data, m_88_data;
bool m_88_da, m_85_da, m_88_started;
};
//**************************************************************************
@ -279,9 +286,10 @@ ADDRESS_MAP_START(alphatp_34_state::alphatp3_io)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x04, 0x04) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
AM_RANGE(0x05, 0x05) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
AM_RANGE(0x08, 0x09) AM_READWRITE(comm88_r, comm88_w)
AM_RANGE(0x10, 0x11) AM_DEVREADWRITE("kbdmcu", i8041_device, upi41_master_r, upi41_master_w)
AM_RANGE(0x12, 0x12) AM_WRITE(beep_w)
AM_RANGE(0x40, 0x40) AM_READ(start88_r)
AM_RANGE(0x40, 0x41) AM_READ(start88_r)
AM_RANGE(0x50, 0x53) AM_READWRITE(fdc_r, fdc_w)
AM_RANGE(0x54, 0x54) AM_READWRITE(fdc_stat_r, fdc_cmd_w)
AM_RANGE(0x78, 0x78) AM_WRITE(bank_w)
@ -294,12 +302,23 @@ ADDRESS_MAP_END
ADDRESS_MAP_START(alphatp_34_state::alphatp30_8088_io)
AM_RANGE(0xffe0, 0xffe1) AM_DEVREADWRITE("pic8259", pic8259_device, read, write)
AM_RANGE(0xffe4, 0xffe7) AM_DEVREADWRITE("pit", pit8253_device, read, write)
AM_RANGE(0xffe9, 0xffea) AM_READWRITE(comm85_r, comm85_w)
ADDRESS_MAP_END
READ8_MEMBER(alphatp_34_state::start88_r)
{
if(m_i8088)
m_i8088->resume(SUSPEND_REASON_DISABLE);
if(!offset)
{
if(m_i8088 && !m_88_started)
{
m_i8088->resume(SUSPEND_REASON_DISABLE);
m_88_started = true;
}
m_i8088->set_input_line(INPUT_LINE_TEST, ASSERT_LINE);
}
else
m_i8088->set_input_line(INPUT_LINE_TEST, CLEAR_LINE);
return 0;
}
@ -308,6 +327,34 @@ WRITE8_MEMBER(alphatp_34_state::bank_w)
m_bankdev->set_bank(BIT(data, 6));
}
READ8_MEMBER(alphatp_34_state::comm88_r)
{
if(!offset)
return (m_85_da ? 0 : 1) | (m_88_da ? 0 : 0x80);
m_85_da = false;
return m_85_data;
}
WRITE8_MEMBER(alphatp_34_state::comm88_w)
{
m_88_data = data;
m_88_da = true;
}
READ8_MEMBER(alphatp_34_state::comm85_r)
{
if(!offset)
return m_88_da ? 0 : 1;
m_88_da = false;
return m_88_data;
}
WRITE8_MEMBER(alphatp_34_state::comm85_w)
{
m_85_data = data;
m_85_da = true;
}
//**************************************************************************
// INPUTS - Alphatronic P1, P2, P2S, P2U and Hell 2069
//**************************************************************************
@ -1097,6 +1144,7 @@ void alphatp_34_state::machine_reset()
m_kbdread = 1;
m_kbdclk = 1; m_fdc_irq = m_fdc_drq = m_fdc_hld = 0;
m_curfloppy = nullptr;
m_88_da = m_85_da = m_88_started = false;
}
MACHINE_CONFIG_START(alphatp_34_state::alphatp3)
MCFG_CPU_ADD("maincpu", I8085A, XTAL(6'000'000))
@ -1160,6 +1208,11 @@ MACHINE_CONFIG_START(alphatp_34_state::alphatp30)
MCFG_DEVICE_ADD("pic8259", PIC8259, 0)
MCFG_PIC8259_OUT_INT_CB(INPUTLINE("i8088", 0))
MCFG_PIC8259_IN_SP_CB(GND)
MCFG_DEVICE_ADD("pit", PIT8253, 0)
MCFG_PIT8253_CLK0(1000000) // 15Mhz osc with unknown divisor
MCFG_PIT8253_CLK1(1000000)
MCFG_PIT8253_CLK2(1000000)
MACHINE_CONFIG_END
//**************************************************************************