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heathkit/h19.cpp: Implemented Shift-Reset functionality. (#11339)

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heathkit/h89.cpp: Hold the main CPU in reset while keys pressed.

heathkit/z37_fdc.cpp: Implemented device reset.
This commit is contained in:
Mark Garlanger 2023-06-18 10:33:28 -05:00 committed by GitHub
parent cd9ae37cb4
commit ec8a319154
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 131 additions and 39 deletions
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4
src/mame/heathkit/h19.cpp
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@ -5,7 +5,7 @@
Heathkit H19
A smart terminal designed and manufactured by Heath Company. This
is identical to the Zenith Data Systems Z-19.
is identical to the Zenith Data Systems Z-19.
****************************************************************************/
@ -69,7 +69,7 @@ ROM_START( ultra19 )
ROM_END
} // anonymous namespace
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1979, h19, 0, 0, h19, 0, h19_state, empty_init, "Heath Company", "Heathkit H-19", MACHINE_SUPPORTS_SAVE )
//Super-19 ROM - ATG Systems, Inc - Adv in Sextant Issue 4, Winter 1983. With the magazine lead-time, likely released late 1982.
COMP( 1982, super19, h19, 0, h19_superh19, 0, h19_state, empty_init, "Heath Company", "Heathkit H-19 w/ Super-19 ROM", MACHINE_SUPPORTS_SAVE )

13
src/mame/heathkit/h89.cpp
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@ -123,6 +123,7 @@ private:
uint8_t raise_NMI_r();
void raise_NMI_w(uint8_t data);
void console_intr(uint8_t data);
void reset_line(int data);
};
/*
@ -364,7 +365,6 @@ void h89_state::machine_reset()
update_mem_view();
}
uint8_t h89_state::raise_NMI_r()
{
m_maincpu->pulse_input_line(INPUT_LINE_NMI, attotime::from_usec(2));
@ -389,6 +389,15 @@ void h89_state::console_intr(uint8_t data)
}
}
void h89_state::reset_line(int data)
{
if (data == ASSERT_LINE)
{
reset();
}
m_maincpu->set_input_line(INPUT_LINE_RESET, data);
}
TIMER_DEVICE_CALLBACK_MEMBER(h89_state::h89_irq_timer)
{
if (m_timer_intr_enabled)
@ -448,6 +457,8 @@ void h89_state::h89(machine_config & config)
m_console->out_tx_callback().set(m_tlb, FUNC(heath_tlb_device::cb1_w));
m_tlb->serial_data_callback().set(m_console, FUNC(ins8250_uart_device::rx_w));
m_tlb->reset_cb().set(FUNC(h89_state::reset_line));
HEATH_Z37_FDC(config, m_h37);
m_h37->drq_cb().set(m_intr_cntrl, FUNC(z37_intr_cntrl::set_drq));
m_h37->irq_cb().set(m_intr_cntrl, FUNC(z37_intr_cntrl::set_intrq));

9
src/mame/heathkit/intr_cntrl.cpp
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@ -31,6 +31,10 @@ void heath_intr_cntrl::device_start()
m_intr_lines = 0;
}
void heath_intr_cntrl::device_reset()
{
}
void heath_intr_cntrl::update_intr_line()
{
@ -166,6 +170,11 @@ void z37_intr_cntrl::device_start()
m_fd_irq_raised = false;
}
void z37_intr_cntrl::device_reset()
{
heath_intr_cntrl::device_reset();
}
void z37_intr_cntrl::block_interrupts(uint8_t data)
{
m_interrupts_blocked = (data != CLEAR_LINE);

2
src/mame/heathkit/intr_cntrl.h
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@ -36,6 +36,7 @@ protected:
virtual void update_intr_line();
virtual void device_start() override;
virtual void device_reset() override;
devcb_write8 m_irq_line;
@ -61,6 +62,7 @@ protected:
virtual void update_intr_line() override;
virtual void device_start() override;
virtual void device_reset() override;
private:
bool m_interrupts_blocked;

114
src/mame/heathkit/tlb.cpp
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@ -6,7 +6,7 @@
The board used in the H19 smart terminal designed and manufactured
by Heath Company. (and the identical Z19 sold by Zenith Data Systems)
This board is also used the Heath's H89 / H88, and ZDS's Z-89 and Z-90.
This board is also used the Heath's H89 / H88, and ZDS's Z-89 and Z-90.
The keyboard consists of a 9x10 matrix connected to a MM5740AAC/N
mask-programmed keyboard controller. The output of this passes
@ -19,12 +19,14 @@
TODO:
- determine why ULTRA ROM's self-diag (ESC |) fails for the ROM and
scratchpad memory
- when pressing "REPEAT", the other pressed key should repeatedly trigger
****************************************************************************/
/***************************************************************************
Memory Layout
The U435 three-to-eight line decoder uses A14 and A15 to generate three memory addresses:
The U435 three-to-eight line decoder uses A14 and A15 to generate
three memory addresses:
1. Program ROM 0x0000
2. Scratchpad RAM 0x4000
@ -33,7 +35,8 @@
Port Layout
Only address lines A5, A6, A7 are used by the U442 three-to-eight line decoder
Only address lines A5, A6, A7 are used by the U442 three-to-eight
line decoder
Address Description
----------------------------------------------------
@ -81,6 +84,7 @@ heath_tlb_device::heath_tlb_device(const machine_config &mconfig, device_type ty
device_t(mconfig, type, tag, owner, clock),
m_maincpu(*this, "maincpu"),
m_write_sd(*this),
m_reset(*this),
m_palette(*this, "palette"),
m_crtc(*this, "crtc"),
m_ace(*this, "ins8250"),
@ -151,23 +155,33 @@ static constexpr uint8_t KB_STATUS_ONLINE_KEY_MASK = 0x08;
static constexpr uint8_t KB_STATUS_REPEAT_KEYS_MASK = 0x40;
static constexpr uint8_t KB_STATUS_KEYBOARD_STROBE_MASK = 0x80;
void heath_tlb_device::device_start()
{
save_item(NAME(m_transchar));
save_item(NAME(m_strobe));
save_item(NAME(m_keyclickactive));
save_item(NAME(m_bellactive));
save_item(NAME(m_reset_pending));
save_item(NAME(m_right_shift));
save_item(NAME(m_reset_key));
m_strobe = false;
m_keyclickactive = false;
m_bellactive = false;
m_reset_pending = false;
m_right_shift = false;
m_reset_key = false;
m_key_click_timer = timer_alloc(FUNC(heath_tlb_device::key_click_off), this);
m_bell_timer = timer_alloc(FUNC(heath_tlb_device::bell_off), this);
}
void heath_tlb_device::device_reset()
{
m_strobe = false;
m_keyclickactive = false;
m_bellactive = false;
}
void heath_tlb_device::key_click_w(uint8_t data)
{
@ -212,17 +226,18 @@ uint8_t heath_tlb_device::kbd_key_r()
m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
m_strobe = false;
// high bit is for control key pressed, this is handled in the ROM, no processing needed.
// high bit is for control key pressed, this is handled in the ROM,
// no processing needed.
return m_transchar;
}
uint8_t heath_tlb_device::kbd_flags_r()
{
uint16_t modifiers = m_kbspecial->read();
uint8_t rv = modifiers & 0x7f;
uint8_t rv = modifiers & 0x7e;
// check both shifts
if ((modifiers & 0x020) == 0 || (modifiers & 0x100) == 0)
if ((modifiers & 0x120) != 0x120)
{
rv |= KB_STATUS_SHIFT_KEYS_MASK;
}
@ -237,12 +252,12 @@ uint8_t heath_tlb_device::kbd_flags_r()
int heath_tlb_device::mm5740_shift_r()
{
return ((m_kbspecial->read() ^ 0x120) & 0x120) ? ASSERT_LINE : CLEAR_LINE;
return ((m_kbspecial->read() & 0x120) != 0x120) ? ASSERT_LINE : CLEAR_LINE;
}
int heath_tlb_device::mm5740_control_r()
{
return ((m_kbspecial->read() ^ 0x10) & 0x10) ? ASSERT_LINE: CLEAR_LINE;
return (m_kbspecial->read() & 0x10) ? CLEAR_LINE : ASSERT_LINE;
}
void heath_tlb_device::mm5740_data_ready_w(int state)
@ -257,6 +272,37 @@ void heath_tlb_device::mm5740_data_ready_w(int state)
}
}
void heath_tlb_device::check_for_reset()
{
if (m_reset_key && m_right_shift)
{
m_reset_pending = true;
m_reset(ASSERT_LINE);
m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
}
else if (m_reset_pending)
{
m_reset_pending = false;
reset();
m_maincpu->set_input_line(INPUT_LINE_RESET, CLEAR_LINE);
m_reset(CLEAR_LINE);
}
}
void heath_tlb_device::reset_key_w(int state)
{
m_reset_key = (state == CLEAR_LINE);
check_for_reset();
}
void heath_tlb_device::right_shift_w(int state)
{
m_right_shift = (state == CLEAR_LINE);
check_for_reset();
}
MC6845_UPDATE_ROW(heath_tlb_device::crtc_update_row)
{
if (!de)
@ -326,8 +372,8 @@ static INPUT_PORTS_START( tlb )
PORT_BIT(0x020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LeftShift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x040, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Repeat") PORT_CODE(KEYCODE_LALT)
// bit 7 - 0x080 is low if a key is pressed
PORT_BIT(0x100, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RightShift") PORT_CODE(KEYCODE_RSHIFT)
PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Reset") PORT_CODE(KEYCODE_F10)
PORT_BIT(0x100, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RightShift") PORT_CODE(KEYCODE_RSHIFT) PORT_WRITE_LINE_MEMBER(heath_tlb_device, right_shift_w)
PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Reset") PORT_CODE(KEYCODE_F10) PORT_WRITE_LINE_MEMBER(heath_tlb_device, reset_key_w)
PORT_START("X1")
PORT_BIT(0x001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
@ -345,7 +391,7 @@ static INPUT_PORTS_START( tlb )
PORT_BIT(0x001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
PORT_BIT(0x002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\' \"") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
PORT_BIT(0x004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("{ }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('{') PORT_CHAR('}')
PORT_BIT(0x008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT(0x008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT(0x010, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x020, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x040, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("KP-1 IL") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
@ -378,15 +424,15 @@ static INPUT_PORTS_START( tlb )
PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("X5")
PORT_BIT(0x001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1)
PORT_BIT(0x002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2)
PORT_BIT(0x004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3)
PORT_BIT(0x008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4)
PORT_BIT(0x010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5)
PORT_BIT(0x020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Erase") PORT_CODE(KEYCODE_F6)
PORT_BIT(0x040, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Blue") PORT_CODE(KEYCODE_F7)
PORT_BIT(0x080, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Red") PORT_CODE(KEYCODE_F8)
PORT_BIT(0x100, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Gray") PORT_CODE(KEYCODE_F9)
PORT_BIT(0x001, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
PORT_BIT(0x002, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2))
PORT_BIT(0x004, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3))
PORT_BIT(0x008, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4))
PORT_BIT(0x010, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5))
PORT_BIT(0x020, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Erase") PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6))
PORT_BIT(0x040, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Blue") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7))
PORT_BIT(0x080, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Red") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8))
PORT_BIT(0x100, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Gray") PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9))
PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("X6")
@ -438,7 +484,7 @@ static INPUT_PORTS_START( tlb )
PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
PORT_START("SW401")
PORT_DIPNAME( 0x0f, 0x0c, "Baud Rate") PORT_DIPLOCATION("SW401:1,2,3,4")
PORT_DIPNAME( 0x0f, 0x0c, "Baud Rate") PORT_DIPLOCATION("SW401:1,2,3,4")
PORT_DIPSETTING( 0x01, "110")
PORT_DIPSETTING( 0x02, "150")
PORT_DIPSETTING( 0x03, "300")
@ -465,28 +511,28 @@ static INPUT_PORTS_START( tlb )
PORT_DIPSETTING( 0x80, "Full")
PORT_START("SW402")
PORT_DIPNAME( 0x01, 0x00, "Cursor") PORT_DIPLOCATION("SW402:1")
PORT_DIPNAME( 0x01, 0x00, "Cursor") PORT_DIPLOCATION("SW402:1")
PORT_DIPSETTING( 0x00, "Underline")
PORT_DIPSETTING( 0x01, "Block")
PORT_DIPNAME( 0x02, 0x00, "Keyclick") PORT_DIPLOCATION("SW402:2")
PORT_DIPNAME( 0x02, 0x00, "Keyclick") PORT_DIPLOCATION("SW402:2")
PORT_DIPSETTING( 0x02, DEF_STR(No))
PORT_DIPSETTING( 0x00, DEF_STR(Yes))
PORT_DIPNAME( 0x04, 0x00, "Wrap at EOL") PORT_DIPLOCATION("SW402:3")
PORT_DIPNAME( 0x04, 0x00, "Wrap at EOL") PORT_DIPLOCATION("SW402:3")
PORT_DIPSETTING( 0x00, DEF_STR(No))
PORT_DIPSETTING( 0x04, DEF_STR(Yes))
PORT_DIPNAME( 0x08, 0x00, "Auto LF on CR") PORT_DIPLOCATION("SW402:4")
PORT_DIPNAME( 0x08, 0x00, "Auto LF on CR") PORT_DIPLOCATION("SW402:4")
PORT_DIPSETTING( 0x00, DEF_STR(No))
PORT_DIPSETTING( 0x08, DEF_STR(Yes))
PORT_DIPNAME( 0x10, 0x00, "Auto CR on LF") PORT_DIPLOCATION("SW402:5")
PORT_DIPNAME( 0x10, 0x00, "Auto CR on LF") PORT_DIPLOCATION("SW402:5")
PORT_DIPSETTING( 0x00, DEF_STR(No))
PORT_DIPSETTING( 0x10, DEF_STR(Yes))
PORT_DIPNAME( 0x20, 0x00, "Mode") PORT_DIPLOCATION("SW402:6")
PORT_DIPNAME( 0x20, 0x00, "Mode") PORT_DIPLOCATION("SW402:6")
PORT_DIPSETTING( 0x00, "Heath/VT52")
PORT_DIPSETTING( 0x20, "ANSI")
PORT_DIPNAME( 0x40, 0x00, "Keypad Shifted") PORT_DIPLOCATION("SW402:7")
PORT_DIPNAME( 0x40, 0x00, "Keypad Shifted") PORT_DIPLOCATION("SW402:7")
PORT_DIPSETTING( 0x00, DEF_STR(No))
PORT_DIPSETTING( 0x40, DEF_STR(Yes))
PORT_DIPNAME( 0x80, 0x00, "Refresh") PORT_DIPLOCATION("SW402:8")
PORT_DIPNAME( 0x80, 0x00, "Refresh") PORT_DIPLOCATION("SW402:8")
PORT_DIPSETTING( 0x00, "60Hz")
PORT_DIPSETTING( 0x80, "50Hz")
INPUT_PORTS_END
@ -576,7 +622,7 @@ static INPUT_PORTS_START( ultra19 )
PORT_DIPSETTING( 0x20, "Invisible")
PORT_DIPSETTING( 0x40, "Fast Blink")
PORT_DIPSETTING( 0x60, "Slow Blink")
PORT_DIPNAME( 0x80, 0x00, "Interlace Scan Mode") PORT_DIPLOCATION("SW402:8")
PORT_DIPNAME( 0x80, 0x00, "Interlace Scan Mode") PORT_DIPLOCATION("SW402:8")
PORT_DIPSETTING( 0x00, "Off")
PORT_DIPSETTING( 0x80, "On")
@ -586,7 +632,7 @@ static INPUT_PORTS_START( watz19 )
PORT_INCLUDE( tlb )
PORT_MODIFY("SW401")
PORT_DIPNAME( 0x0f, 0x0c, "Baud Rate") PORT_DIPLOCATION("SW401:1,2,3,4")
PORT_DIPNAME( 0x0f, 0x0c, "Baud Rate") PORT_DIPLOCATION("SW401:1,2,3,4")
PORT_DIPSETTING( 0x00, "75")
PORT_DIPSETTING( 0x01, "110")
PORT_DIPSETTING( 0x02, "150")
@ -603,7 +649,7 @@ static INPUT_PORTS_START( watz19 )
PORT_DIPSETTING( 0x0d, "19200")
PORT_DIPSETTING( 0x0e, "38400")
PORT_DIPSETTING( 0x0f, "134.5")
PORT_DIPNAME( 0x40, 0x00, "Word Size") PORT_DIPLOCATION("SW401:7")
PORT_DIPNAME( 0x40, 0x00, "Word Size") PORT_DIPLOCATION("SW401:7")
PORT_DIPSETTING( 0x00, "8-bit Word")
PORT_DIPSETTING( 0x40, "7-bit Word")
PORT_DIPNAME( 0x80, 0x80, "Duplex") PORT_DIPLOCATION("SW401:8")

11
src/mame/heathkit/tlb.h
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@ -27,15 +27,20 @@ public:
// interface routines
auto serial_data_callback() { return m_write_sd.bind(); }
auto reset_cb() { return m_reset.bind(); }
void cb1_w(int state);
void reset_key_w(int state);
void right_shift_w(int state);
protected:
heath_tlb_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock = 0);
virtual ioport_constructor device_input_ports() const override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
void mem_map(address_map &map);
@ -46,6 +51,7 @@ protected:
private:
void key_click_w(uint8_t data);
void bell_w(uint8_t data);
void check_for_reset();
uint8_t kbd_key_r();
uint8_t kbd_flags_r();
uint16_t translate_mm5740_b(uint16_t b);
@ -67,6 +73,7 @@ private:
emu_timer *m_bell_timer;
devcb_write_line m_write_sd;
devcb_write_line m_reset;
required_device<palette_device> m_palette;
required_device<mc6845_device> m_crtc;
@ -82,7 +89,9 @@ private:
bool m_strobe;
bool m_keyclickactive;
bool m_bellactive;
bool m_reset_pending;
bool m_right_shift;
bool m_reset_key;
};
class heath_super19_tlb_device : public heath_tlb_device

12
src/mame/heathkit/z37_fdc.cpp
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@ -170,6 +170,18 @@ void heath_z37_fdc_device::device_start()
m_access_track_sector = false;
}
void heath_z37_fdc_device::device_reset()
{
m_control_reg = 0;
m_interface_reg = 0;
m_intrq_allowed = false;
m_drq_allowed = false;
m_access_track_sector = false;
m_fd_irq_cb(CLEAR_LINE);
m_drq_cb(CLEAR_LINE);
}
static void z37_floppies(device_slot_interface &device)
{
// H-17-1

5
src/mame/heathkit/z37_fdc.h
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@ -27,7 +27,10 @@ public:
auto block_interrupt_cb() { return m_block_interrupt_cb.bind(); }
protected : virtual void device_start() override;
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
void ctrl_w(uint8_t val);