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(MESS) Started hooking up the paddle to the i8021. (nw)

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This commit is contained in:
Wilbert Pol 2013-01-01 14:15:28 +00:00
parent c555a5ba9f
commit 1db7776087
1 changed files with 76 additions and 6 deletions
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82
src/mess/drivers/microvsn.c
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@ -21,6 +21,8 @@ of the games were clocked at around 500KHz, 550KHz, or 300KHz.
#include "rendlay.h"
#define LOG 0
enum cpu_type
{
CPU_TYPE_I8021,
@ -49,6 +51,8 @@ public:
// i8021 interface
DECLARE_WRITE8_MEMBER(i8021_p0_write);
DECLARE_WRITE8_MEMBER(i8021_p1_write);
DECLARE_WRITE8_MEMBER(i8021_p2_write);
DECLARE_READ8_MEMBER(i8021_t1_read);
DECLARE_READ8_MEMBER(i8021_bus_read);
// TMS1100 interface
@ -63,8 +67,15 @@ protected:
required_device<cpu_device> m_i8021;
required_device<cpu_device> m_tms1100;
// Timers
static const device_timer_id TIMER_PADDLE = 0;
emu_timer *m_paddle_timer;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// i8021 variables
UINT8 m_p0;
UINT8 m_p2;
UINT8 m_t1;
// tms1100 variables
UINT16 m_r;
@ -104,7 +115,11 @@ PALETTE_INIT_MEMBER(microvision_state,microvision)
MACHINE_START_MEMBER(microvision_state, microvision)
{
m_paddle_timer = timer_alloc(TIMER_PADDLE);
save_item(NAME(m_p0));
save_item(NAME(m_p2));
save_item(NAME(m_t1));
save_item(NAME(m_r));
save_item(NAME(m_o));
save_item(NAME(m_lcd_latch));
@ -131,6 +146,11 @@ MACHINE_RESET_MEMBER(microvision_state, microvision)
m_o = 0;
m_r = 0;
m_p0 = 0;
m_p2 = 0;
m_t1 = 0;
m_paddle_timer->adjust( attotime::never );
switch ( m_cpu_type )
{
@ -198,7 +218,7 @@ void microvision_state::lcd_write(UINT8 control, UINT8 data)
UINT16 row = ( m_lcd_latch[0] << 12 ) | ( m_lcd_latch[1] << 8 ) | ( m_lcd_latch[2] << 4 ) | m_lcd_latch[3];
UINT16 col = ( m_lcd_latch[4] << 12 ) | ( m_lcd_latch[5] << 8 ) | ( m_lcd_latch[6] << 4 ) | m_lcd_latch[7];
//logerror("row = %04x, col = %04x\n", row, col );
if (LOG) logerror("row = %04x, col = %04x\n", row, col );
for ( int i = 0; i < 16; i++ )
{
UINT16 temp = row;
@ -229,6 +249,17 @@ void microvision_state::speaker_write(UINT8 speaker)
}
void microvision_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch ( id )
{
case TIMER_PADDLE:
m_t1 = 0;
break;
}
}
/*
x--- ---- KEY3
-x-- ---- KEY4
@ -241,7 +272,7 @@ void microvision_state::speaker_write(UINT8 speaker)
*/
WRITE8_MEMBER( microvision_state::i8021_p0_write )
{
logerror( "p0_write: %02x\n", data );
if (LOG) logerror( "p0_write: %02x\n", data );
m_p0 = data;
}
@ -257,12 +288,46 @@ WRITE8_MEMBER( microvision_state::i8021_p0_write )
*/
WRITE8_MEMBER( microvision_state::i8021_p1_write )
{
logerror( "p1_write: %02x\n", data );
if (LOG) logerror( "p1_write: %02x\n", data );
lcd_write( data & 0x03, data >> 4 );
}
/*
---- xx-- CAP2 (paddle)
---- --x- SPKR1
---- ---x SPKR0
*/
WRITE8_MEMBER( microvision_state::i8021_p2_write )
{
if (LOG) logerror( "p2_write: %02x\n", data );
m_p2 = data;
speaker_write( m_p2 & 0x03 );
if ( m_p2 & 0x0c )
{
m_t1 = 1;
// Stop paddle timer
m_paddle_timer->adjust( attotime::never );
}
else
{
// Start paddle timer (min is 160uS, max is 678uS)
UINT8 paddle = 255 - ioport("PADDLE")->read();
m_paddle_timer->adjust( attotime::from_usec(160 + ( 518 * paddle ) / 255 ) );
}
}
READ8_MEMBER( microvision_state::i8021_t1_read )
{
return m_t1;
}
READ8_MEMBER( microvision_state::i8021_bus_read )
{
UINT8 data = m_p0;
@ -304,7 +369,7 @@ READ8_MEMBER( microvision_state::tms1100_read_k )
{
UINT8 data = 0;
//logerror("read_k\n");
if (LOG) logerror("read_k\n");
if ( m_r & 0x100 )
{
@ -324,7 +389,7 @@ READ8_MEMBER( microvision_state::tms1100_read_k )
WRITE16_MEMBER( microvision_state::tms1100_write_o )
{
logerror("write_o: %04x\n", data);
if (LOG) logerror("write_o: %04x\n", data);
m_o = data;
@ -343,7 +408,7 @@ x-- ---- ---- KEY2
*/
WRITE16_MEMBER( microvision_state::tms1100_write_r )
{
logerror("write_r: %04x\n", data);
if (LOG) logerror("write_r: %04x\n", data);
m_r = data;
@ -425,6 +490,9 @@ static INPUT_PORTS_START( microvision )
PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_BUTTON6) PORT_CODE(KEYCODE_T) PORT_NAME("B06")
PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_BUTTON9) PORT_CODE(KEYCODE_G) PORT_NAME("B09")
PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON12) PORT_CODE(KEYCODE_B) PORT_NAME("B12")
PORT_START("PADDLE")
PORT_BIT( 0xff, 0x80, IPT_PADDLE) PORT_PLAYER(1) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_MINMAX(0, 255)
INPUT_PORTS_END
@ -432,6 +500,8 @@ static ADDRESS_MAP_START( microvision_8021_io, AS_IO, 8, microvision_state )
AM_RANGE( 0x00, 0xFF ) AM_WRITE( i8021_p0_write )
AM_RANGE( MCS48_PORT_P0, MCS48_PORT_P0 ) AM_WRITE( i8021_p0_write )
AM_RANGE( MCS48_PORT_P1, MCS48_PORT_P1 ) AM_WRITE( i8021_p1_write )
AM_RANGE( MCS48_PORT_P2, MCS48_PORT_P2 ) AM_WRITE( i8021_p2_write )
AM_RANGE( MCS48_PORT_T1, MCS48_PORT_T1 ) AM_READ( i8021_t1_read )
AM_RANGE( MCS48_PORT_BUS, MCS48_PORT_BUS ) AM_READ( i8021_bus_read )
ADDRESS_MAP_END