Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 09:20:02 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

(MESS) ibm5150: Fixed keyboard regression introduced in r24103. On the ibm5150 the PPI PB2 output cannot influence the mainboard keyboard data output. (nw)

Browse Source
This commit is contained in:
Wilbert Pol 2013-09-10 20:54:34 +00:00
parent 766c611365
commit 089c826d6c
2 changed files with 33 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/mess/includes/genpc.h
View File

@ -130,6 +130,9 @@ public:
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const;
DECLARE_WRITE_LINE_MEMBER( keyboard_clock_w );
protected:
// device-level overrides
virtual void device_start();

36
src/mess/machine/genpc.c
View File

@ -294,6 +294,21 @@ const struct pit8253_interface pc_pit8253_config =
* ON ON - one disk drive
*
**********************************************************/
WRITE_LINE_MEMBER( ibm5150_mb_device::keyboard_clock_w )
{
if (!m_ppi_keyboard_clear && !state && !m_ppi_shift_enable)
{
m_ppi_shift_enable = m_ppi_shift_register & 0x01;
m_ppi_shift_register >>= 1;
m_ppi_shift_register |= m_ppi_data_signal << 7;
m_pic8259->ir1_w(m_ppi_shift_enable);
m_pc_kbdc->data_write_from_mb(!m_ppi_shift_enable);
}
}
WRITE_LINE_MEMBER( ibm5160_mb_device::keyboard_clock_w )
{
if (!m_ppi_keyboard_clear && !state && !m_ppi_shift_enable)
@ -427,6 +442,12 @@ static const pc_kbdc_interface pc_kbdc_intf =
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, ibm5160_mb_device, keyboard_data_w)
};
static const pc_kbdc_interface pc_kbdc_intf_5150 =
{
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, ibm5150_mb_device, keyboard_clock_w),
DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF_OWNER, ibm5160_mb_device, keyboard_data_w)
};
/**********************************************************
*
* NMI handling
@ -684,6 +705,9 @@ static const cassette_interface ibm5150_cassette_interface =
static MACHINE_CONFIG_FRAGMENT( ibm5150_mb_config )
MCFG_FRAGMENT_ADD(ibm5160_mb_config)
MCFG_DEVICE_REMOVE("pc_kbdc")
MCFG_PC_KBDC_ADD("pc_kbdc", pc_kbdc_intf_5150)
MCFG_CASSETTE_ADD( "cassette", ibm5150_cassette_interface )
MACHINE_CONFIG_END
@ -843,15 +867,15 @@ WRITE8_MEMBER( ibm5150_mb_device::pc_ppi_portb_w )
m_cassette->change_state(( data & 0x08 ) ? CASSETTE_MOTOR_DISABLED : CASSETTE_MOTOR_ENABLED,CASSETTE_MASK_MOTOR);
m_ppi_clock_signal = ( m_ppi_keyb_clock ) ? 1 : 0;
m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal);
/* If PB7 is set clear the shift register and reset the IRQ line */
if ( m_ppi_keyboard_clear )
{
m_pic8259->ir1_w(0);
m_ppi_shift_register = 0;
m_ppi_shift_enable = 1;
m_ppi_shift_enable = 0;
m_pic8259->ir1_w(m_ppi_shift_enable);
}
m_pc_kbdc->data_write_from_mb(!m_ppi_shift_enable);
m_ppi_clock_signal = ( m_ppi_keyb_clock ) ? 1 : 0;
m_pc_kbdc->clock_write_from_mb(m_ppi_clock_signal);
}