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ibm5100: add 5110 keyboard

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This commit is contained in:
Patrick Mackinlay 2024-04-04 17:31:07 +07:00
parent c283d68064
commit 37755dde5f
2 changed files with 53 additions and 23 deletions
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61
src/mame/ibm/ibm5100_kbd.cpp
View file

@ -27,6 +27,8 @@
* This scheme disallows modifier combinations, with shift taking priority over
* command. Bits 5 and 6 of the scan code are swapped when output.
*
* IBM 5110 keyboard scan codes are bitwise inverted and reversed.
*
* Regular alpha, numeric and keypad keys are easily mapped 1:1 with a standard
* modern keyboard. Additional keys are mapped by default as follows:
*
@ -57,6 +59,7 @@
#include "logmacro.h"
DEFINE_DEVICE_TYPE(IBM5100_KEYBOARD, ibm5100_keyboard_device, "ibm5100_keyboard", "IBM 5100 Keyboard")
DEFINE_DEVICE_TYPE(IBM5110_KEYBOARD, ibm5110_keyboard_device, "ibm5110_keyboard", "IBM 5110 Keyboard")
INPUT_PORTS_START(ibm5100_keyboard)
PORT_START("modifiers")
@ -184,8 +187,8 @@ static const std::pair<u8, u8>typamatic_keys[] =
std::make_pair(17, 1), // cursor left
};
ibm5100_keyboard_device::ibm5100_keyboard_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
: device_t(mconfig, IBM5100_KEYBOARD, tag, owner, clock)
ibm5100_keyboard_device::ibm5100_keyboard_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock)
: device_t(mconfig, type, tag, owner, clock)
, device_matrix_keyboard_interface(mconfig, *this
, "col.0", "col.1", "col.2", "col.3", "col.4", "col.5", "col.6", "col.7"
, "col.8", "col.9", "col.a", "col.b", "col.c", "col.d", "col.e", "col.f"
@ -196,6 +199,16 @@ ibm5100_keyboard_device::ibm5100_keyboard_device(machine_config const &mconfig,
{
}
ibm5100_keyboard_device::ibm5100_keyboard_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
: ibm5100_keyboard_device(mconfig, IBM5100_KEYBOARD, tag, owner, clock)
{
}
ibm5110_keyboard_device::ibm5110_keyboard_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
: ibm5100_keyboard_device(mconfig, IBM5110_KEYBOARD, tag, owner, clock)
{
}
void ibm5100_keyboard_device::device_start()
{
save_item(NAME(m_scan));
@ -219,7 +232,7 @@ void ibm5100_keyboard_device::key_make(u8 row, u8 column)
if (m_lock)
return;
m_scan = translate(row, column);
m_scan = translate(row, column, m_modifiers->read());
LOG("key_make row %d column %d scan 0x%02x\n", row, column, m_scan);
@ -243,20 +256,33 @@ void ibm5100_keyboard_device::key_repeat(u8 row, u8 column)
{
if (m_typamatic)
{
m_scan = translate(row, column);
m_scan = translate(row, column, m_modifiers->read());
m_strobe(0);
m_strobe(1);
}
}
// column and row are swapped with respect device_matrix_keyboard_interface arguments
u8 ibm5100_keyboard_device::translate(u8 column, u8 row)
void ibm5100_keyboard_device::typamatic_w(int state)
{
// compute basic scan code with bits 5 and 6 swapped
u8 data = bitswap<8>(row << 5 | column, 7, 5, 6, 4, 3, 2, 1, 0);
m_typamatic = state;
}
u8 const modifiers = m_modifiers->read();
void ibm5100_keyboard_device::lock_w(int state)
{
// FIXME: not connected?
//m_lock = !state;
}
ioport_constructor ibm5100_keyboard_device::device_input_ports() const
{
return INPUT_PORTS_NAME(ibm5100_keyboard);
}
// column and row are swapped with respect device_matrix_keyboard_interface arguments
u8 ibm5100_keyboard_device::translate(u8 column, u8 row, u8 modifiers) const
{
u8 data = bitswap<8>(row << 5 | column, 4, 5, 6, 4, 3, 2, 1, 0);
// modifiers are applied differently for columns > 15
if (column < 16)
@ -270,7 +296,7 @@ u8 ibm5100_keyboard_device::translate(u8 column, u8 row)
}
else
{
data |= 0x82;
data |= 0x02; // S is active low
if (BIT(modifiers, 0))
// shift
@ -283,17 +309,8 @@ u8 ibm5100_keyboard_device::translate(u8 column, u8 row)
return data;
}
void ibm5100_keyboard_device::typamatic_w(int state)
u8 ibm5110_keyboard_device::translate(u8 column, u8 row, u8 modifiers) const
{
m_typamatic = state;
}
void ibm5100_keyboard_device::lock_w(int state)
{
m_lock = !state;
}
ioport_constructor ibm5100_keyboard_device::device_input_ports() const
{
return INPUT_PORTS_NAME(ibm5100_keyboard);
// 5110 scan codes are bitwise inverted and reversed
return bitswap<8>(~ibm5100_keyboard_device::translate(column, row, modifiers), 0, 1, 2, 3, 4, 5, 6, 7);
}

15
src/mame/ibm/ibm5100_kbd.h
View file

@ -22,6 +22,8 @@ public:
void lock_w(int state);
protected:
ibm5100_keyboard_device(machine_config const &mconfig, device_type type, char const *tag, device_t *owner, u32 clock);
// device_t implementation
virtual ioport_constructor device_input_ports() const override;
virtual void device_start() override;
@ -32,7 +34,7 @@ protected:
virtual void key_break(u8 row, u8 column) override;
virtual void key_repeat(u8 row, u8 column) override;
u8 translate(u8 column, u8 row);
virtual u8 translate(u8 column, u8 row, u8 modifiers) const;
private:
devcb_write_line m_strobe;
@ -44,6 +46,17 @@ private:
bool m_lock;
};
class ibm5110_keyboard_device
: public ibm5100_keyboard_device
{
public:
ibm5110_keyboard_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock = 0);
protected:
virtual u8 translate(u8 column, u8 row, u8 modifiers) const override;
};
DECLARE_DEVICE_TYPE(IBM5100_KEYBOARD, ibm5100_keyboard_device)
DECLARE_DEVICE_TYPE(IBM5110_KEYBOARD, ibm5110_keyboard_device)
#endif // MAME_IBM_IBM5100_KBD_H