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brother/pn8800fxb: Hook up centronics port

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This commit is contained in:
Dirk Best 2023-12-24 12:04:00 +01:00
parent b91d972c6f
commit 90fcbc42ad
1 changed files with 46 additions and 3 deletions
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49
src/mame/brother/pn8800fxb.cpp
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@ -22,7 +22,6 @@
to 1 and doesn't work correctly.
- Improve video emulation (offset, modes, etc.)
- Floppy self-test fails (but works otherwise)
- Centronics
- Modem
- Soft power off/on
- RAM contents should be retained when turning off
@ -39,6 +38,7 @@
#include "emu.h"
#include "bus/centronics/ctronics.h"
#include "cpu/z180/z180.h"
#include "imagedev/floppy.h"
#include "machine/rp5c01.h"
@ -71,6 +71,7 @@ public:
m_buzzer(*this, "buzzer"),
m_fdc(*this, "fdc"),
m_floppy(*this, "fdc:0"),
m_centronics(*this, "centronics"),
m_lomem_view(*this, "lomem")
{ }
@ -91,6 +92,7 @@ private:
required_device<beep_device> m_buzzer;
required_device<hd63266f_device> m_fdc;
required_device<floppy_connector> m_floppy;
required_device<centronics_device> m_centronics;
memory_view m_lomem_view;
uint8_t m_key_select;
@ -104,6 +106,9 @@ private:
bool m_fdc_drq;
bool m_centronics_busy;
bool m_centronics_select;
uint8_t m_mem_change;
void mem_map(address_map &map);
@ -134,6 +139,9 @@ private:
void fdc_data_w(uint8_t data);
int floppy_dskchg_r();
uint8_t cdcc_ctrl_r();
void cdcc_ctrl_w(uint8_t);
void mem_change_w(uint8_t data);
void bank_select_w(uint8_t data);
void int_ack_w(uint8_t data);
@ -186,8 +194,8 @@ void pn8800fxb_state::io_map(address_map &map)
map(0xa8, 0xa8).mirror(0x07).nopr(); // "not used" - but read often
map(0xb0, 0xb0).mirror(0x07).portr("power");
map(0xb8, 0xb8).rw(FUNC(pn8800fxb_state::keyboard_r), FUNC(pn8800fxb_state::keyboard_w));
// c0-c7 cdcc data
// c8-cf cdcc control
map(0xc0, 0xc0).mirror(0x07).w("centronics_latch", FUNC(output_latch_device::write));
map(0xc8, 0xc8).mirror(0x07).rw(FUNC(pn8800fxb_state::cdcc_ctrl_r), FUNC(pn8800fxb_state::cdcc_ctrl_w));
map(0xd0, 0xdf).rw("rtc", FUNC(tc8521_device::read), FUNC(tc8521_device::write));
map(0xe0, 0xe0).mirror(0x07).w(FUNC(pn8800fxb_state::bank_select_w));
// e8-ef ga test
@ -613,6 +621,31 @@ int pn8800fxb_state::floppy_dskchg_r()
}
//**************************************************************************
// CDCC / CENTRONICS
//**************************************************************************
uint8_t pn8800fxb_state::cdcc_ctrl_r()
{
// 7------- centronics busy
// -6------ centronics select
// --54321- not used
// -------0 centronics strobe (write)
uint8_t data = 0x3f;
data |= (!m_centronics_select) << 6;
data |= (!m_centronics_busy) << 7;
return data;
}
void pn8800fxb_state::cdcc_ctrl_w(uint8_t data)
{
m_centronics->write_strobe(BIT(data, 0));
}
//**************************************************************************
// MACHINE EMULATION
//**************************************************************************
@ -674,6 +707,8 @@ void pn8800fxb_state::machine_start()
save_item(NAME(m_video_offset));
save_item(NAME(m_cursor_ctrl));
save_item(NAME(m_fdc_drq));
save_item(NAME(m_centronics_busy));
save_item(NAME(m_centronics_select));
save_item(NAME(m_mem_change));
}
@ -719,6 +754,14 @@ void pn8800fxb_state::pn8800fxb(machine_config &config)
m_fdc->inp_rd_callback().set(FUNC(pn8800fxb_state::floppy_dskchg_r));
FLOPPY_CONNECTOR(config, "fdc:0", hd_floppy, "35hd", floppy_image_device::default_pc_floppy_formats);
// centronics
output_latch_device &centronics_latch(OUTPUT_LATCH(config, "centronics_latch"));
CENTRONICS(config, m_centronics, centronics_devices, "printer");
m_centronics->set_output_latch(centronics_latch);
m_centronics->busy_handler().set([this](int state) { m_centronics_busy = bool(state); });
m_centronics->select_handler().set([this](int state) { m_centronics_select = bool(state); });
TC8521(config, "rtc", XTAL(32'768));
// alarm output connected to auto power-on