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This commit is contained in:
arbee 2015-02-01 20:38:25 -05:00
parent ec0dbc3fed
commit 505bb73c1b
2 changed files with 20 additions and 24 deletions
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35
src/emu/bus/snes_ctrl/miracle.c
View File

@ -1,12 +1,13 @@
/********************************************************************** /**********************************************************************
Nintendo SNES - Miracle Piano Keyboard Super Nintendo Entertainment System - Miracle Piano Keyboard
TODO: ???
Copyright MESS Team. Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions. Visit http://mamedev.org for licensing and usage restrictions.
recv at PC = 008a4a
xmit at PC = 008adb
**********************************************************************/ **********************************************************************/
#include "miracle.h" #include "miracle.h"
@ -60,7 +61,7 @@ void snes_miracle_device::device_timer(emu_timer &timer, device_timer_id id, int
//------------------------------------------------- //-------------------------------------------------
snes_miracle_device::snes_miracle_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : snes_miracle_device::snes_miracle_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
device_t(mconfig, SNES_MIRACLE, "Miracle Piano Controller (SNES)", tag, owner, clock, "snes_miracle", __FILE__), device_t(mconfig, SNES_MIRACLE, "Miracle Piano SNES Cable", tag, owner, clock, "snes_miracle", __FILE__),
device_serial_interface(mconfig, *this), device_serial_interface(mconfig, *this),
device_snes_control_port_interface(mconfig, *this), device_snes_control_port_interface(mconfig, *this),
m_midiin(*this, "mdin"), m_midiin(*this, "mdin"),
@ -106,11 +107,6 @@ void snes_miracle_device::device_reset()
m_tx_busy = false; m_tx_busy = false;
} }
//-------------------------------------------------
// read
//-------------------------------------------------
UINT8 snes_miracle_device::read_pin4() UINT8 snes_miracle_device::read_pin4()
{ {
UINT8 ret = 0; UINT8 ret = 0;
@ -132,20 +128,18 @@ UINT8 snes_miracle_device::read_pin4()
return ret; return ret;
} }
//------------------------------------------------- void snes_miracle_device::write_pin6(UINT8 data)
// write {
//------------------------------------------------- // printf("%02x to pin6\n", data);
}
// c4fc = start of recv routine
// c53a = start of send routine
void snes_miracle_device::write_strobe(UINT8 data) void snes_miracle_device::write_strobe(UINT8 data)
{ {
// printf("write: %d (%d %02x %d)\n", data & 1, m_sent_bits, m_data_sent, m_midi_mode); // printf("%02x to strobe\n", data);
if (m_midi_mode == MIRACLE_MIDI_SEND) if (m_midi_mode == MIRACLE_MIDI_SEND)
{ {
//SNES writes (data & 1) to Miracle Piano! // console writes (data & 1) to Miracle Piano.
// 1st write is data present flag (1=data present) // 1st write is data present flag (1=data present)
// next 8 writes are actual data bits (with ^1) // next 8 writes are actual data bits (with ^1)
m_sent_bits++; m_sent_bits++;
@ -177,7 +171,7 @@ void snes_miracle_device::write_strobe(UINT8 data)
{ {
// printf("got strobe at %d clocks\n", m_strobe_clock); // printf("got strobe at %d clocks\n", m_strobe_clock);
if (m_strobe_clock < 528 && data == 0) if (m_strobe_clock < 500 && data == 0)
{ {
// short delay is recieve mode // short delay is recieve mode
m_midi_mode = MIRACLE_MIDI_RECEIVE; m_midi_mode = MIRACLE_MIDI_RECEIVE;
@ -203,9 +197,10 @@ void snes_miracle_device::write_strobe(UINT8 data)
} }
return; return;
} }
else if (m_strobe_clock >= 528) else if (m_strobe_clock >= 500)
{ {
// more than 528 clocks since strobe on write means send mode // more than ~520 clocks since strobe on write means send mode
// (ranges from 522-528 have been seen)
m_midi_mode = MIRACLE_MIDI_SEND; m_midi_mode = MIRACLE_MIDI_SEND;
strobe_timer->reset(); strobe_timer->reset();
m_strobe_on = 0; m_strobe_on = 0;

7
src/emu/bus/snes_ctrl/miracle.h
View File

@ -1,6 +1,6 @@
/********************************************************************** /**********************************************************************
Nintendo Entertainment System - Miracle Piano Keyboard Super Nintendo Entertainment System - Miracle Piano Keyboard
Copyright MESS Team. Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions. Visit http://mamedev.org for licensing and usage restrictions.
@ -51,8 +51,9 @@ protected:
virtual void device_start(); virtual void device_start();
virtual void device_reset(); virtual void device_reset();
virtual UINT8 read_pin4(); UINT8 read_pin4();
virtual void write_strobe(UINT8 data); void write_pin6(UINT8 data);
void write_strobe(UINT8 data);
static const device_timer_id TIMER_STROBE_ON = 0; static const device_timer_id TIMER_STROBE_ON = 0;
emu_timer *strobe_timer; emu_timer *strobe_timer;