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Add some temporary hacks to the votrax to get the parameters to

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all change to real values so the analog filters can be tested.

Changed USE_FAKE_VOTRAX back to 1. Was accidentally checked in
the wrong way in a previous change.
This commit is contained in:
Aaron Giles 2012-03-08 09:09:52 +00:00
parent 388d53737e
commit bd1935c924
2 changed files with 14 additions and 2 deletions
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14
src/emu/sound/votrax.c
View File

@ -45,6 +45,8 @@
// DEBUGGING
//**************************************************************************
#define TEMP_HACKS (1)
#define LOG_TIMING (0)
#define LOG_LOWPARAM (0)
#define LOG_GLOTTAL (0)
@ -613,7 +615,9 @@ mame_printf_debug("[PH=%02X]\n", m_latch_80);
m_counter_236 = m_counter_234 = 0;
// derive glottal circuit output signals
#if !TEMP_HACKS
UINT8 old_glottal_sync = m_glottal_sync;
#endif
m_glottal_sync = (m_counter_234 == 0);
glottal_out = s_glottal_wave[m_counter_234];
@ -645,6 +649,10 @@ mame_printf_debug("[PH=%02X]\n", m_latch_80);
(m_0625_clock << 2) |
(BIT(m_latch_46, 2) << 3);
#if TEMP_HACKS
m_latch_46 = 0xf;
#endif
// determine the read/write signal
UINT8 ram_write = 0;
switch (a)
@ -652,7 +660,7 @@ mame_printf_debug("[PH=%02X]\n", m_latch_80);
// write if not FF and low 2 bits of latch
// FF is the S/R flip-flop at 142 ANDed with !(/FA & /VA)
case 0: case 1: case 2: case 3: case 4:
if ((m_srff_142 & !((m_fa == 0) & (m_va == 0))) && (m_latch_46 & 0x3) == 0x3)
if (!(m_srff_142 & !((m_fa == 0) & (m_va == 0))) && (m_latch_46 & 0x3) == 0x3)
ram_write = 1;
break;
@ -698,9 +706,13 @@ mame_printf_debug("[PH=%02X]\n", m_latch_80);
}
// latch remaining parameter values on rising edge of (phi2 & glottal sync)
#if TEMP_HACKS
if (phi2_rising)
#else
UINT8 old_phi2_glottal = (old_phi2 & old_glottal_sync);
UINT8 new_phi2_glottal = m_phi2 & m_glottal_sync;
if ((old_phi2_glottal ^ new_phi2_glottal) & new_phi2_glottal)
#endif
switch (a)
{
case 0:

2
src/mame/includes/gottlieb.h
View File

@ -16,7 +16,7 @@
// set to 0 to enable Votrax device and disable samples
#define USE_FAKE_VOTRAX (0)
#define USE_FAKE_VOTRAX (1)
#define GOTTLIEB_VIDEO_HCOUNT 318