Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-25 09:50:04 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

MT 2662 : schaser missile sound was incorrect [Robbbert]

Browse Source 
Proof obtained from a video.
This commit is contained in:
Robbbert 2013-01-07 22:31:45 +00:00
parent 9b05a5652f
commit 25129a9ef7
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/mame/audio/8080bw.c
View File

@ -846,13 +846,13 @@ DISCRETE_SOUND_END
static const double schaser_effect_rc[8] =
{
0,
(RES_K(82) + RES_K(20)) * CAP_U(1),
(RES_K(39) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(82) + 1.0/RES_K(39)) + RES_K(20)) * CAP_U(1),
(RES_K(15) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(82) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(39) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(82) + 1.0/RES_K(39) + 1.0/RES_K(15)) + RES_K(20)) * CAP_U(1)
(RES_K(39) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(15) + 1.0/RES_K(39)) + RES_K(20)) * CAP_U(1),
(RES_K(82) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(15) + 1.0/RES_K(82)) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(15) + 1.0/RES_K(82)) + RES_K(20)) * CAP_U(1),
(1.0/ (1.0/RES_K(15) + 1.0/RES_K(39) + 1.0/RES_K(82)) + RES_K(20)) * CAP_U(1)
};
WRITE8_MEMBER(_8080bw_state::schaser_sh_port_1_w)
@ -864,9 +864,11 @@ WRITE8_MEMBER(_8080bw_state::schaser_sh_port_1_w)
bit 2 - Effect Sound A (SX2)
bit 3 - Effect Sound B (SX3)
bit 4 - Effect Sound C (SX4)
bit 5 - Explosion (SX5) */
bit 5 - Explosion (SX5)
Note that the schematic has SX2 and SX4 the wrong way around.
See MT 2662 for video proof. */
//printf( "schaser_sh_port_1_w: %02x\n", data );
discrete_sound_w(m_discrete, space, SCHASER_DOT_EN, data & 0x01);
discrete_sound_w(m_discrete, space, SCHASER_DOT_SEL, data & 0x02);
@ -929,8 +931,6 @@ WRITE8_MEMBER(_8080bw_state::schaser_sh_port_2_w)
bit 4 - Field Control B (SX10)
bit 5 - Flip Screen */
//printf( "schaser_sh_port_2_w: %02x\n", data );
discrete_sound_w(m_discrete, space, SCHASER_MUSIC_BIT, BIT(data, 0));
discrete_sound_w(m_discrete, space, SCHASER_SND_EN, BIT(data, 1));