diff options
| author | leo <leo@NetBSD.org> | 1996-03-27 10:07:45 +0000 |
|---|---|---|
| committer | leo <leo@NetBSD.org> | 1996-03-27 10:07:45 +0000 |
| commit | c5a7f4e97776e6e1c5fa8436ddbb1df63cf00ac7 (patch) | |
| tree | d948fb3d33f58a7f9941980b64d747aec16fe75e /sys/arch/atari/dev/ym2149.c | |
| parent | 5cb9a24e7901090a23efb03ac06e3fb9d9296ba2 (diff) | |
Take out direct access to the YM2149. The chip definitions are moved
from video.h to ym2149reg.h.
Diffstat (limited to 'sys/arch/atari/dev/ym2149.c')
| -rw-r--r-- | sys/arch/atari/dev/ym2149.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/sys/arch/atari/dev/ym2149.c b/sys/arch/atari/dev/ym2149.c new file mode 100644 index 00000000000..b8b11777b4a --- /dev/null +++ b/sys/arch/atari/dev/ym2149.c @@ -0,0 +1,60 @@ +/* $NetBSD: ym2149.c,v 1.1 1996/03/27 10:08:32 leo Exp $ */ + +/* + * Copyright (c) 1996 Leo Weppelman. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Leo Weppelman. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <machine/iomap.h> +#include <atari/dev/ym2149reg.h> + +/* + * Yahama YM-2149 Programmable Sound Generator + * + * For now only an init function is here... + */ +u_char ym2149_ioa; /* Soft-copy of port-A */ + +void +ym2149_init() +{ + /* + * Initialize the sound-chip YM2149: + * All sounds off, both I/O ports output. + */ + YM2149->sd_selr = YM_MFR; + YM2149->sd_wdat = 0xff; + + /* + * Sensible value for ioa: + */ + YM2149->sd_selr = YM_IOA; + YM2149->sd_wdat = ym2149_ioa = PA_FDSEL|PA_PSTROBE|PA_SER2; +} |
