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-rw-r--r--sys/i386/isa/sound/soundcard.c684
1 files changed, 684 insertions, 0 deletions
diff --git a/sys/i386/isa/sound/soundcard.c b/sys/i386/isa/sound/soundcard.c
new file mode 100644
index 0000000..3b6db0b
--- /dev/null
+++ b/sys/i386/isa/sound/soundcard.c
@@ -0,0 +1,684 @@
+/*
+ * sound/386bsd/soundcard.c
+ *
+ * Soundcard driver for 386BSD.
+ *
+ * Copyright by Hannu Savolainen 1993
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 "opt_devfs.h"
+
+#include <i386/isa/sound/sound_config.h>
+#ifdef DEVFS
+#include <sys/devfsext.h>
+#endif /* DEVFS */
+
+#if NSND > 0 /* from "snd.h" */
+#include "uart.h"
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <sys/mman.h>
+
+#include <i386/isa/isa_device.h>
+
+
+/*
+** Register definitions for DMA controller 1 (channels 0..3):
+*/
+#define DMA1_CHN(c) (IO_DMA1 + 1*(2*(c))) /* addr reg for channel c */
+#define DMA1_SMSK (IO_DMA1 + 1*10) /* single mask register */
+#define DMA1_MODE (IO_DMA1 + 1*11) /* mode register */
+#define DMA1_FFC (IO_DMA1 + 1*12) /* clear first/last FF */
+
+/*
+** Register definitions for DMA controller 2 (channels 4..7):
+*/
+#define DMA2_CHN(c) (IO_DMA2 + 2*(2*(c))) /* addr reg for channel c */
+#define DMA2_SMSK (IO_DMA2 + 2*10) /* single mask register */
+#define DMA2_MODE (IO_DMA2 + 2*11) /* mode register */
+#define DMA2_FFC (IO_DMA2 + 2*12) /* clear first/last FF */
+
+
+#define FIX_RETURN(ret) {if ((ret)<0) return -(ret); else return 0;}
+
+static int soundcards_installed = 0; /* Number of installed soundcards */
+static int soundcard_configured = 0;
+
+static struct fileinfo files[SND_NDEVS];
+struct selinfo selinfo[SND_NDEVS >> 4];
+
+int
+MIDIbuf_poll (int dev, struct fileinfo *file, int events, select_table * wait);
+
+int
+audio_poll(int dev, struct fileinfo * file, int events, select_table * wait);
+
+int
+sequencer_poll (int dev, struct fileinfo *file, int events, select_table * wait);
+
+static int sndprobe __P((struct isa_device *));
+static int sndattach __P((struct isa_device *));
+static int sndmmap __P((dev_t dev, int offset, int nprot ));
+
+static d_open_t sndopen;
+static d_close_t sndclose;
+static d_ioctl_t sndioctl;
+static d_read_t sndread;
+static d_write_t sndwrite;
+static d_poll_t sndpoll;
+
+static char driver_name[] = "snd";
+
+#define CDEV_MAJOR 30
+static struct cdevsw snd_cdevsw = {
+ sndopen, sndclose, sndread, sndwrite,
+ sndioctl, nostop, noreset, nodevtotty,
+ sndpoll, sndmmap, nostrategy, driver_name,
+ NULL, -1,
+};
+
+
+
+
+static void sound_mem_init(void);
+
+/*
+ * for each "device XXX" entry in the config file, we have
+ * a struct isa_driver which is linked into isa_devtab_null[]
+ *
+ * XXX It is a bit stupid to call the generic routine so many times and
+ * switch then to the specific one, but the alternative way would be
+ * to replicate some code in the probe/attach routines.
+ */
+
+struct isa_driver opldriver = {sndprobe, sndattach, "opl"};
+struct isa_driver trixdriver = {sndprobe, sndattach, "trix"};
+struct isa_driver trixsbdriver = {sndprobe, sndattach, "trixsb"};
+struct isa_driver sbdriver = {sndprobe, sndattach, "sb"};
+struct isa_driver sbxvidriver = {sndprobe, sndattach, "sbxvi"};
+struct isa_driver sbmididriver = {sndprobe, sndattach, "sbmidi"};
+struct isa_driver awedriver = {sndprobe, sndattach, "awe"};
+struct isa_driver pasdriver = {sndprobe, sndattach, "pas"};
+struct isa_driver mpudriver = {sndprobe, sndattach, "mpu"};
+struct isa_driver gusdriver = {sndprobe, sndattach, "gus"};
+struct isa_driver gusxvidriver = {sndprobe, sndattach, "gusxvi"};
+struct isa_driver gusmaxdriver = {sndprobe, sndattach, "gusmax"};
+struct isa_driver uartdriver = {sndprobe, sndattach, "uart"};
+struct isa_driver mssdriver = {sndprobe, sndattach, "mss"};
+struct isa_driver cssdriver = {sndprobe, sndattach, "css"};
+struct isa_driver sscapedriver = {sndprobe, sndattach, "sscape"};
+struct isa_driver sscape_mssdriver = {sndprobe, sndattach, "sscape_mss"};
+
+short ipri_to_irq(u_short ipri);
+
+static ointhand2_t sndintr;
+
+u_long
+get_time(void)
+{
+ struct timeval timecopy;
+
+ getmicrotime(&timecopy);
+ return timecopy.tv_usec / (1000000 / hz) +
+ (u_long) timecopy.tv_sec * hz;
+}
+
+static int
+sndmmap( dev_t dev, int offset, int nprot )
+{
+ struct dma_buffparms * dmap;
+
+ dev = minor(dev) >> 4;
+ if (dev > 0 ) return (-1);
+
+ dmap = audio_devs[dev]->dmap_out;
+
+ if (nprot & PROT_EXEC)
+ return( -1 );
+ dmap->mapping_flags |= DMA_MAP_MAPPED ;
+ return( i386_btop(vtophys(dmap->raw_buf) + offset) );
+}
+
+
+static int
+sndread(dev_t dev, struct uio * buf, int flag)
+{
+ int count = buf->uio_resid;
+
+ dev = minor(dev);
+ FIX_RETURN(sound_read_sw(dev, &files[dev], buf, count));
+}
+
+
+static int
+sndwrite(dev_t dev, struct uio * buf, int flag)
+{
+ int count = buf->uio_resid;
+
+ dev = minor(dev);
+ FIX_RETURN(sound_write_sw(dev, &files[dev], buf, count));
+}
+
+static int
+sndopen(dev_t dev, int flags, int mode, struct proc * p)
+{
+ int retval;
+ struct fileinfo tmp_file;
+
+ dev = minor(dev);
+ if (!soundcard_configured && dev) {
+ printf("SoundCard Error: soundcard system has not been configured\n");
+ return ENODEV ;
+ }
+ tmp_file.mode = 0;
+
+ if (flags & FREAD && flags & FWRITE)
+ tmp_file.mode = OPEN_READWRITE;
+ else if (flags & FREAD)
+ tmp_file.mode = OPEN_READ;
+ else if (flags & FWRITE)
+ tmp_file.mode = OPEN_WRITE;
+
+ selinfo[dev >> 4].si_pid = 0;
+ selinfo[dev >> 4].si_flags = 0;
+ if ((retval = sound_open_sw(dev, &tmp_file)) < 0)
+ FIX_RETURN(retval);
+
+ bcopy((char *) &tmp_file, (char *) &files[dev], sizeof(tmp_file));
+
+ FIX_RETURN(retval);
+}
+
+
+static int
+sndclose(dev_t dev, int flags, int mode, struct proc * p)
+{
+ dev = minor(dev);
+ sound_release_sw(dev, &files[dev]);
+
+ return 0 ;
+}
+
+static int
+sndioctl(dev_t dev, u_long cmd, caddr_t arg, int mode, struct proc * p)
+{
+ dev = minor(dev);
+ FIX_RETURN(sound_ioctl_sw(dev, &files[dev], cmd, arg));
+}
+
+int
+sndpoll(dev_t dev, int events, struct proc * p)
+{
+ dev = minor(dev);
+ dev = minor(dev);
+
+ /* printf ("snd_select(dev=%d, rw=%d, pid=%d)\n", dev, rw, p->p_pid); */
+#ifdef ALLOW_POLL
+ switch (dev & 0x0f) {
+#ifdef CONFIG_SEQUENCER
+ case SND_DEV_SEQ:
+ case SND_DEV_SEQ2:
+ return sequencer_poll(dev, &files[dev], events, p);
+ break;
+#endif
+
+#ifdef CONFIG_MIDI
+ case SND_DEV_MIDIN:
+ return MIDIbuf_poll(dev, &files[dev], events, p);
+ break;
+#endif
+
+#ifdef CONFIG_AUDIO
+ case SND_DEV_DSP:
+ case SND_DEV_DSP16:
+ case SND_DEV_AUDIO:
+
+ return audio_poll(dev, &files[dev], events, p);
+ break;
+#endif
+
+ default:
+ return 0;
+ }
+
+#endif /* ALLOW_POLL */
+ DEB(printf("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg));
+
+ return 0 ;
+}
+
+/* XXX this should become ffs(ipri), perhaps -1 lr 970705 */
+short
+ipri_to_irq(u_short ipri)
+{
+ /*
+ * Converts the ipri (bitmask) to the corresponding irq number
+ */
+ int irq;
+
+ for (irq = 0; irq < 16; irq++)
+ if (ipri == (1 << irq))
+ return irq;
+
+ return -1; /* Invalid argument */
+}
+
+static int
+driver_to_voxunit(struct isa_driver * driver)
+{
+ /*
+ * converts a sound driver pointer into the equivalent VoxWare device
+ * unit number
+ */
+ if (driver == &opldriver)
+ return (SNDCARD_ADLIB);
+ else if (driver == &sbdriver)
+ return (SNDCARD_SB);
+ else if (driver == &pasdriver)
+ return (SNDCARD_PAS);
+ else if (driver == &gusdriver)
+ return (SNDCARD_GUS);
+ else if (driver == &mpudriver)
+ return (SNDCARD_MPU401);
+ else if (driver == &sbxvidriver)
+ return (SNDCARD_SB16);
+ else if (driver == &sbmididriver)
+ return (SNDCARD_SB16MIDI);
+ else if(driver == &awedriver)
+ return(SNDCARD_AWE32);
+ else if (driver == &uartdriver)
+ return (SNDCARD_UART6850);
+ else if (driver == &gusdriver)
+ return (SNDCARD_GUS16);
+ else if (driver == &mssdriver)
+ return (SNDCARD_MSS);
+ else if (driver == &cssdriver)
+ return (SNDCARD_CS4232);
+ else if (driver == &sscapedriver)
+ return(SNDCARD_SSCAPE);
+ else if (driver == &sscape_mssdriver)
+ return(SNDCARD_SSCAPE_MSS);
+ else if (driver == &trixdriver)
+ return (SNDCARD_TRXPRO);
+ else if (driver == &trixsbdriver)
+ return (SNDCARD_TRXPRO_SB);
+ else
+ return (0);
+}
+
+/*
+ * very dirty: tmp_osp is allocated in sndprobe, and used at the next
+ * call in sndattach
+ */
+
+static sound_os_info *temp_osp;
+
+/*
+ * sndprobe is called for each isa_device. From here, a voxware unit
+ * number is determined, and the appropriate probe routine is selected.
+ * The parameters from the config line are passed to the hw_config struct.
+ */
+
+static int
+sndprobe(struct isa_device * dev)
+{
+ struct address_info hw_config;
+ int unit;
+
+ temp_osp = (sound_os_info *)malloc(sizeof(sound_os_info),
+ M_DEVBUF, M_NOWAIT);
+ if (!temp_osp)
+ panic("SOUND: Cannot allocate memory\n");
+
+ /*
+ * get config info from the kernel config. These may be overridden
+ * by the local autoconfiguration routines though (e.g. pnp stuff).
+ */
+
+ hw_config.io_base = dev->id_iobase;
+ hw_config.irq = ipri_to_irq(dev->id_irq);
+ hw_config.dma = dev->id_drq;
+
+ /*
+ * misuse the flags field for read dma. Note that, to use 0 as
+ * read dma channel, one of the high bits should be set. lr970705 XXX
+ */
+
+ if (dev->id_flags != 0)
+ hw_config.dma2 = dev->id_flags & 0x7;
+ else
+ hw_config.dma2 = -1;
+
+ hw_config.always_detect = 0;
+ hw_config.name = NULL;
+ hw_config.card_subtype = 0;
+
+ temp_osp->unit = dev->id_unit;
+ hw_config.osp = temp_osp;
+ unit = driver_to_voxunit(dev->id_driver);
+
+ if (sndtable_probe(unit, &hw_config)) {
+ dev->id_iobase = hw_config.io_base;
+ dev->id_irq = hw_config.irq == -1 ? 0 : (1 << hw_config.irq);
+ dev->id_drq = hw_config.dma;
+
+ if (hw_config.dma != hw_config.dma2 && ( hw_config.dma2 != -1))
+ dev->id_flags = hw_config.dma2 | 0x100; /* XXX lr */
+ else
+ dev->id_flags = 0;
+ return TRUE;
+ }
+ return 0;
+}
+
+static int
+sndattach(struct isa_device * dev)
+{
+ int unit;
+ static int midi_initialized = 0;
+ static int seq_initialized = 0;
+ struct address_info hw_config;
+ char *dname;
+ void *tmp;
+
+ /*
+ * Associate interrupt handlers with devices. XXX this may be incomplete.
+ */
+ dname = dev->id_driver->name;
+#if defined(CONFIG_AD1848)
+ if (strcmp(dname, "css") == 0 || strcmp(dname, "gusxvi") == 0 ||
+ strcmp(dname, "mss") == 0)
+ dev->id_ointr = adintr;
+#endif
+#ifdef CONFIG_GUS
+ if (strcmp(dname, "gus") == 0)
+ dev->id_ointr = gusintr;
+#endif
+#ifdef CONFIG_PAS
+ if (strcmp(dname, "pas") == 0)
+ dev->id_ointr = pasintr;
+#endif
+#if NSB > 0 && (defined(CONFIG_MIDI) || defined(CONFIG_AUDIO))
+ if (strcmp(dname, "sb") == 0)
+ dev->id_ointr = sbintr;
+#endif
+ if (strcmp(dname, "sscape_mss") == 0)
+ dev->id_ointr = sndintr;
+#if NSSCAPE > 0
+ if (strcmp(dname, "sscape") == 0 || strcmp(dname, "trix") == 0)
+ dev->id_ointr = sscapeintr;
+#endif
+#if NUART > 0
+ if (strcmp(dname, "uart0") == 0)
+ dev->id_ointr = m6850intr;
+#endif
+
+ unit = driver_to_voxunit(dev->id_driver);
+ hw_config.io_base = dev->id_iobase;
+ hw_config.irq = ipri_to_irq(dev->id_irq);
+ hw_config.dma = dev->id_drq;
+
+ /* misuse the flags field for read dma */
+ if (dev->id_flags != 0)
+ hw_config.dma2 = dev->id_flags & 0x7;
+ else
+ hw_config.dma2 = -1;
+
+ hw_config.card_subtype = 0;
+ hw_config.osp = temp_osp;
+
+ if (!unit)
+ return FALSE;
+
+ if (!(sndtable_init_card(unit, &hw_config))) { /* init card */
+ printf(" <Driver not configured>");
+ return FALSE;
+ }
+ /*
+ * Init the high level sound driver
+ */
+
+ if (!(soundcards_installed = sndtable_get_cardcount())) {
+ DDB(printf("No drivers actually installed\n"));
+ return FALSE; /* No cards detected */
+ }
+ printf("\n");
+
+#ifdef CONFIG_AUDIO
+ if (num_audiodevs) { /* Audio devices present */
+ DMAbuf_init();
+ sound_mem_init();
+ }
+ soundcard_configured = 1;
+#endif
+
+ if (num_midis && !midi_initialized)
+ midi_initialized = 1;
+
+ if ((num_midis + num_synths) && !seq_initialized) {
+ seq_initialized = 1;
+ sequencer_init();
+ }
+
+ {
+ dev_t dev;
+
+ dev = makedev(CDEV_MAJOR, 0);
+ cdevsw_add(&dev, &snd_cdevsw, NULL);
+ }
+#ifdef DEVFS
+#define GID_SND GID_GAMES
+#define UID_SND UID_ROOT
+#define PERM_SND 0660
+ /*
+ * make links to first successfully probed device, don't do it if
+ * duplicate creation of same node failed (ie. bad cookie returned)
+ */
+ if (dev->id_driver == &opldriver){
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_SEQ,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "sequencer%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "sequencer");
+ } else if (dev->id_driver == &mpudriver ||
+ dev->id_driver == &sbmididriver ||
+ dev->id_driver == &uartdriver){
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_MIDIN,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "midi%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "midi");
+ } else {
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_DSP,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "dsp%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "dsp");
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_DSP16,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "dspW%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "dspW");
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_AUDIO,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "audio%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "audio");
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_CTL,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "mixer%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "mixer");
+ tmp = devfs_add_devswf(&snd_cdevsw, (dev->id_unit << 4) | SND_DEV_STATUS,
+ DV_CHR, UID_SND, GID_SND, PERM_SND,
+ "sndstat%r", dev->id_unit);
+ if (tmp) devfs_makelink(tmp, "sndstat");
+ }
+#endif /* DEVFS */
+ return TRUE;
+}
+
+
+#ifdef CONFIG_AUDIO
+
+static void
+alloc_dmap(int dev, int chan, struct dma_buffparms * dmap)
+{
+ char *tmpbuf;
+ int i;
+
+ tmpbuf = contigmalloc(audio_devs[dev]->buffsize, M_DEVBUF, M_NOWAIT,
+ 0ul, 0xfffffful, 1ul, chan & 4 ? 0x20000ul : 0x10000ul);
+ if (tmpbuf == NULL)
+ printf("soundcard buffer alloc failed \n");
+
+ if (tmpbuf == NULL) {
+ printf("snd: Unable to allocate %d bytes of buffer\n",
+ 2 * (int) audio_devs[dev]->buffsize);
+ return;
+ }
+ dmap->raw_buf = tmpbuf;
+ /*
+ * Use virtual address as the physical address, since isa_dmastart
+ * performs the phys address computation.
+ */
+
+ dmap->raw_buf_phys = (uintptr_t) tmpbuf;
+ for (i = 0; i < audio_devs[dev]->buffsize; i++) *tmpbuf++ = 0x80;
+
+}
+
+static void
+sound_mem_init(void)
+{
+ int dev;
+ static u_long dsp_init_mask = 0;
+
+ for (dev = 0; dev < num_audiodevs; dev++) /* Enumerate devices */
+ if (!(dsp_init_mask & (1 << dev))) /* Not already done */
+ if (audio_devs[dev]->dmachan1 >= 0) {
+ dsp_init_mask |= (1 << dev);
+ audio_devs[dev]->buffsize = DSP_BUFFSIZE;
+ /* Now allocate the buffers */
+ alloc_dmap(dev, audio_devs[dev]->dmachan1,
+ audio_devs[dev]->dmap_out);
+ if (audio_devs[dev]->flags & DMA_DUPLEX)
+ alloc_dmap(dev, audio_devs[dev]->dmachan2,
+ audio_devs[dev]->dmap_in);
+ } /* for dev */
+}
+
+#endif
+
+
+int
+snd_ioctl_return(int *addr, int value)
+{
+ if (value < 0)
+ return value; /* Error */
+ suword(addr, value);
+ return 0;
+}
+
+#define MAX_UNIT 50
+typedef void (*irq_proc_t) (int irq);
+static irq_proc_t irq_proc[MAX_UNIT] = {NULL};
+static int irq_irq[MAX_UNIT] = {0};
+
+int
+snd_set_irq_handler(int int_lvl, void (*hndlr) (int), sound_os_info * osp)
+{
+ if (osp->unit >= MAX_UNIT) {
+ printf("Sound error: Unit number too high (%d)\n", osp->unit);
+ return 0;
+ }
+ irq_proc[osp->unit] = hndlr;
+ irq_irq[osp->unit] = int_lvl;
+ return 1;
+}
+
+static void
+sndintr(int unit)
+{
+ if ( (unit >= MAX_UNIT) || (irq_proc[unit] == NULL) )
+ return;
+
+ irq_proc[unit] (irq_irq[unit]); /* Call the installed handler */
+}
+
+void
+conf_printf(char *name, struct address_info * hw_config)
+{
+ if (!trace_init)
+ return;
+
+ printf("snd0: <%s> ", name);
+#if 0
+ if (hw_config->io_base != -1 )
+ printf("at 0x%03x", hw_config->io_base);
+
+ if (hw_config->irq != -1 )
+ printf(" irq %d", hw_config->irq);
+
+ if (hw_config->dma != -1 || hw_config->dma2 != -1) {
+ printf(" dma %d", hw_config->dma);
+ if (hw_config->dma2 != -1)
+ printf(",%d", hw_config->dma2);
+ }
+#endif
+
+}
+
+void
+conf_printf2(char *name, int base, int irq, int dma, int dma2)
+{
+ if (!trace_init)
+ return;
+
+ printf("snd0: <%s> ", name);
+#if 0
+ if (hw_config->io_base != -1 )
+ printf("at 0x%03x", hw_config->io_base);
+
+ if (irq)
+ printf(" irq %d", irq);
+
+ if (dma != -1 || dma2 != -1) {
+ printf(" dma %d", dma);
+ if (dma2 != -1)
+ printf(",%d", dma2);
+ }
+#endif
+
+}
+
+
+void tenmicrosec (int j)
+{
+ int i, k;
+ for (k = 0; k < j/10 ; k++) {
+ for (i = 0; i < 16; i++)
+ inb (0x80);
+ }
+}
+
+#endif /* NSND > 0 */
+
+
+
+
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