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pp: Floppy checkpoint (nw)

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This commit is contained in:
AJR 2020-02-19 15:21:47 -05:00
parent 52f3fc0f8c
commit b712e0b0f6
1 changed files with 45 additions and 4 deletions
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49
src/mame/drivers/pp.cpp
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@ -9,6 +9,7 @@
#include "emu.h"
#include "bus/centronics/ctronics.h"
#include "cpu/z80/z80.h"
#include "imagedev/floppy.h"
#include "machine/i8279.h"
#include "machine/input_merger.h"
#include "machine/output_latch.h"
@ -26,6 +27,7 @@ public:
, m_maincpu(*this, "maincpu")
, m_int4(*this, "int4")
, m_fdc(*this, "fdc")
, m_floppy(*this, "fdc:%u", 0U)
, m_pvtc(*this, "pvtc")
, m_speaker(*this, "speaker")
, m_printer(*this, "printer")
@ -40,6 +42,7 @@ public:
, m_kbd_scan(0)
, m_kbd_release(false)
, m_printer_busy(false)
, m_dr(0)
, m_mode(0)
{
}
@ -67,6 +70,7 @@ private:
void memory_w(offs_t offset, u8 data);
u8 stat_r();
void co_w(u8 data);
DECLARE_WRITE_LINE_MEMBER(hld_w);
void mode_w(u8 data);
void mem_map(address_map &map);
@ -76,6 +80,7 @@ private:
required_device<z80_device> m_maincpu;
required_device<input_merger_device> m_int4;
required_device<fd1793_device> m_fdc;
required_device_array<floppy_connector, 2> m_floppy;
required_device<scn2672_device> m_pvtc;
required_device<speaker_sound_device> m_speaker;
required_device<centronics_device> m_printer;
@ -92,6 +97,7 @@ private:
u8 m_kbd_scan;
bool m_kbd_release;
bool m_printer_busy;
u8 m_dr;
u8 m_mode;
};
@ -100,6 +106,8 @@ void pp_state::machine_start()
m_kbd_leds.resolve();
m_kbd_leds[0] = 1; // power LED (green) is always on
m_fdc->dden_w(0);
// 64K of dynamic RAM (8x 4864)
m_ram = make_unique_clear<u8[]>(0x10000);
save_pointer(NAME(m_ram), 0x10000);
@ -110,6 +118,7 @@ void pp_state::machine_start()
save_item(NAME(m_kbd_scan));
save_item(NAME(m_kbd_release));
save_item(NAME(m_printer_busy));
save_item(NAME(m_dr));
save_item(NAME(m_mode));
}
@ -244,13 +253,27 @@ u8 pp_state::stat_r()
if (!machine().side_effects_disabled())
m_rom_enabled = !BIT(m_mode, 4);
// TODO: D6 = floppy index
return m_int_status | (BIT(m_modifiers->read(), 3) ? 0x10 : 0x00) | (m_printer_busy ? 0x20 : 0x00) | (BIT(m_kbd_scan, 3) ? 0x80 : 0x00);
bool index_pulse = (BIT(m_dr, 0) && m_floppy[0]->get_device() != nullptr && m_floppy[0]->get_device()->idx_r())
|| (BIT(m_dr, 1) && m_floppy[1]->get_device() != nullptr && m_floppy[1]->get_device()->idx_r());
return m_int_status
| (BIT(m_modifiers->read(), 3) ? 0x10 : 0x00)
| (m_printer_busy ? 0x20 : 0x00)
| (index_pulse ? 0x00 : 0x40)
| (BIT(m_kbd_scan, 3) ? 0x80 : 0x00);
}
void pp_state::co_w(u8 data)
{
// TODO: D0 = DR1/, D1 = DR2/, D2 = SS/
// D0 = DR1, D1 = DR2, D2 = SS
m_dr = data & 0x07;
floppy_image_device *floppy = nullptr;
for (int i = 0; i < 2 && floppy == nullptr; i++)
if (BIT(data, i))
floppy = m_floppy[i]->get_device();
m_fdc->set_floppy(floppy);
if (floppy != nullptr)
floppy->ss_w(BIT(data, 2));
m_kbd_leds[2] = BIT(data, 0); // pin 21 of J13 connector
m_kbd_leds[1] = BIT(data, 1); // pin 22 of J13 connector
@ -266,6 +289,13 @@ void pp_state::co_w(u8 data)
m_kbd_release = BIT(data, 7);
}
WRITE_LINE_MEMBER(pp_state::hld_w)
{
for (int i = 0; i < 2; i++)
if (m_floppy[i]->get_device() != nullptr)
m_floppy[i]->get_device()->mon_w(!state);
}
void pp_state::mode_w(u8 data)
{
// D0 = 40COL, D1 = REV, D2 = HIL, D3 = CHAR (TODO), D4 = ROMSEL, D5 = BOW, D6 = DIV7-8/
@ -390,6 +420,12 @@ static INPUT_PORTS_START(pp)
PORT_BIT(0x8, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps Lock") PORT_TOGGLE PORT_CODE(KEYCODE_CAPSLOCK)
INPUT_PORTS_END
static void pp_floppies(device_slot_interface &device)
{
// Mitsubishi M485X
device.option_add("525dd", FLOPPY_525_DD);
}
void pp_state::pp(machine_config &config)
{
Z80(config, m_maincpu, 8_MHz_XTAL / 2);
@ -398,7 +434,7 @@ void pp_state::pp(machine_config &config)
m_maincpu->set_irq_acknowledge_callback(FUNC(pp_state::intak_cb));
INPUT_MERGER_ALL_HIGH(config, m_int4).output_handler().set(FUNC(pp_state::int_w<4>));
INPUT_MERGER_ANY_HIGH(config, "int6")/*.output_handler().set(FUNC(pp_state::int_w<6>))*/;
INPUT_MERGER_ANY_HIGH(config, "int6").output_handler().set(FUNC(pp_state::int_w<6>));
INPUT_MERGER_ANY_HIGH(config, "int7").output_handler().set(FUNC(pp_state::int_w<7>));
i8279_device &pkdi(I8279(config, "pkdi", 8_MHz_XTAL / 8));
@ -410,8 +446,13 @@ void pp_state::pp(machine_config &config)
pkdi.in_ctrl_callback().set(FUNC(pp_state::cntl_r));
FD1793(config, m_fdc, 8_MHz_XTAL / 8); // with FDC9216 data separator
m_fdc->set_force_ready(true);
m_fdc->intrq_wr_callback().set("int6", FUNC(input_merger_device::in_w<0>));
m_fdc->drq_wr_callback().set("int7", FUNC(input_merger_device::in_w<0>));
m_fdc->hld_wr_callback().set(FUNC(pp_state::hld_w));
FLOPPY_CONNECTOR(config, m_floppy[0], pp_floppies, "525dd", floppy_image_device::default_floppy_formats).enable_sound(true);
FLOPPY_CONNECTOR(config, m_floppy[1], pp_floppies, nullptr, floppy_image_device::default_floppy_formats).enable_sound(true);
SCN2672(config, m_pvtc, 13_MHz_XTAL / 8);
m_pvtc->set_character_width(8); // 8 or 7 depending on mode