19.2 ¤Ï¤¸¤á¤Ë

19.2.1 ÍѸì²òÀâ

bps

Bits per Second ¤Îά¤Ç¡¢ ¥Ç¡¼¥¿¤ÎžÁ÷®ÅÙ¤òɽ¤¹Ã±°Ì¡£

DTE

Data Terminal Equipment ¤Îά¡£ ¤¿¤È¤¨¤Ð¥³¥ó¥Ô¥å¡¼¥¿ËÜÂΤΤ³¤È

DCE

Data Communications Equipment ¤Îά¤Ç¡¢¶ñÂÎŪ¤Ë¤Ï¥â¥Ç¥à¤Î¤³¤È¡£

RS-232

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19.2.2 ¥±¡¼¥Ö¥ë¤È¥Ý¡¼¥È

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19.2.2.1 ¥±¡¼¥Ö¥ë

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19.2.2.1.1 ¥Ì¥ë¥â¥Ç¥à¥±¡¼¥Ö¥ë

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Signal Pin #   Pin # Signal
TxD 2 connects to 3 RxD
RxD 3 connects to 2 TxD
DTR 20 connects to 6 DSR
DSR 6 connects to 20 DTR
SG 7 connects to 7 SG
DCD 8 connects to 4 RTS
RTS 4   5 CTS
CTS 5 connects to 8 DCD

Note: DCD ¤È RST ¤Ç¤Ï¡¢¥³¥Í¥¯¥¿ÆâÉô¤Ç¥Ô¥ó4¤ò5¤ËÀܳ¤·¡¢ ¤½¤·¤ÆµÕ¦¤Î¥³¥Í¥¯¥¿¤Î¥Ô¥ó8¤ÈÀܳ¤·¤Þ¤¹¡£

19.2.2.1.2 ¥¹¥¿¥ó¥À¡¼¥É RS-232C ¥±¡¼¥Ö¥ë

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19.2.2.2 ¥Ý¡¼¥È

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19.2.2.2.1 ¥Ý¡¼¥È¤Î¼ïÎà

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19.2.2.2.2 ¥Ý¡¼¥È¤Î̾Á°

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19.2.3 ¥«¡¼¥Í¥ë¤ÎÀßÄê

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Tip: °Ê²¼¤Î¥³¥Þ¥ó¥É¤Ç sio ¤È¤¤¤¦Ê¸»úÎó¤ò´Þ¤à¥á¥Ã¥»¡¼¥¸¤À¤±¤òɽ¼¨¤Ç¤­¤Þ¤¹¡£

# /sbin/dmesg | grep 'sio'

¤¿¤È¤¨¤Ð¡¢¥·¥ê¥¢¥ë¥Ý¡¼¥È¤ò»Í¤Ä»ý¤Ä¥·¥¹¥Æ¥à¤Î¾ì¹ç¤Ï¡¢ °Ê²¼¤Î¤è¤¦¤Ê¥·¥ê¥¢¥ë¥Ý¡¼¥È¤Ë´Ø¤¹¤ë¥á¥Ã¥»¡¼¥¸¤¬¥«¡¼¥Í¥ë¤Ë¤è¤Ã¤ÆÉ½¼¨¤µ¤ì¤Þ¤¹¡£

sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
sio2 at 0x3e8-0x3ef irq 5 on isa
sio2: type 16550A
sio3 at 0x2e8-0x2ef irq 9 on isa
sio3: type 16550A

¤â¤·¡¢¥«¡¼¥Í¥ë¤ËÀµ¾ï¤Ëǧ¼±¤µ¤ì¤Ê¤¤¥Ý¡¼¥È¤¬¤¢¤ë¾ì¹ç¤Ï¡¢ ¤ª¤½¤é¤¯¥«¥¹¥¿¥Þ¥¤¥º¤·¤¿ FreeBSD ¥«¡¼¥Í¥ë¤ò¹½ÃÛ¤¹¤ëɬÍפ¬¤¢¤ë¤Ç¤·¤ç¤¦¡£ ¥«¡¼¥Í¥ë¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¤Î¾ÜºÙ¤Ë¤Ä¤¤¤Æ¤Ï Chapter 9 ¤ò¤´Í÷¤¯¤À¤µ¤¤¡£

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device		sio0	at isa? port "IO_COM1" tty irq 4 vector siointr
device		sio1	at isa? port "IO_COM2" tty irq 3 vector siointr
device		sio2	at isa? port "IO_COM3" tty irq 5 vector siointr
device		sio3	at isa? port "IO_COM4" tty irq 9 vector siointr

¥·¥¹¥Æ¥à¤ËÅëºÜ¤µ¤ì¤Æ¤¤¤Ê¤¤¥Ç¥Ð¥¤¥¹¤Ë´Ø¤¹¤ëµ­½Ò¤Ï¡¢ ¥³¥á¥ó¥È¥¢¥¦¥È¤Þ¤¿¤Ïºï½ü¤·¤Æ¤·¤Þ¤Ã¤Æ¤«¤Þ¤¤¤Þ¤»¤ó¡£ sio(4) ¤Î¥Þ¥Ë¥å¥¢¥ë¤ò¸«¤Æ¡¢ ¥Þ¥ë¥Á¥Ý¡¼¥È¤Î¥Ü¡¼¥É¤Î¤¿¤á¤Î¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¥Õ¥¡¥¤¥ë¤Îµ­½Ò¤Î»ÅÊý¤ò³Îǧ¤·¤Æ¤¯¤À¤µ¤¤¡£ ¥Ç¥Ð¥¤¥¹¤Î¥Õ¥é¥°¤Î»ØÄêÊýË¡¤¬¥Ð¡¼¥¸¥ç¥ó¤Ë¤è¤Ã¤Æ°Û¤Ê¤ê¤Þ¤¹¤Î¤Ç¡¢ Ê̤ΥС¼¥¸¥ç¥ó¤Î FreeBSD ¤ÇÍøÍѤ·¤Æ¤¤¤¿¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥ó¥Õ¥¡¥¤¥ë¤òήÍѤ¹¤ë¾ì¹ç¤Ë¤Ï½½Ê¬Ãí°Õ¤·¤Æ¤¯¤À¤µ¤¤¡£

Note: ¤Ê¤ª¡¢port "IO_COM1", IO_COM2, IO_COM3 ¤ª¤è¤Ó IO_COM4 ¤Ï¡¢ ¤½¤ì¤¾¤ì¤Î¥Ý¡¼¥È¤Î°ìÈÌŪ¤Ê¥¢¥É¥ì¥¹¤Ç¤¢¤ë 0x3f8, 0x2f8, 0x3e8 ¤ª¤è¤Ó 0x2e8 ¤òɽ¤·¤Þ¤¹¡£¤Þ¤¿¡¢³ä¤ê¹þ¤ßÈÖ¹æ 4, 3, 5 ¤È 9 ¤Ï¡¢¤½¤ì¤¾¤ì COM1: ¤«¤é COM4: ¤Î¥Ý¡¼¥È¤Ç°ìÈÌŪ¤Ë»ÈÍѤµ¤ì¤ë IRQ ¤Ç¤¹¡£¤Þ¤¿¡¢ISA ¥Ð¥¹¤Î¥³¥ó¥Ô¥å¡¼¥¿¤Î¾ì¹ç¡¢ °ìÈÌŪ¤Ê¥·¥ê¥¢¥ë¥Ý¡¼¥È¤ÏÊ£¿ô¤Î¥Ý¡¼¥È¤Ç°ì¤Ä¤Î IRQ ¤ò¶¦Í­¤¹¤ë¤³¤È¤¬ ¤Ç¤­¤Þ¤»¤ó¤Î¤ÇÃí°Õ¤¬É¬ÍפǤ¹ (¥Þ¥ë¥Á¥Ý¡¼¥È¤Î¥·¥ê¥¢¥ë¥Ü¡¼¥É¤Î¾ì¹ç¤Ï¡¢Ê£¿ô¤Î 16550A ¥Ù¡¼¥¹¤Î¥Ý¡¼¥È¤Ç°ì¤Ä¤Þ¤¿¤ÏÆó¤Ä¤Î IRQ ¤ò¶¦Í­¤¹¤ë¤¿¤á¤Îµ¡¹½¤òÈ÷¤¨¤Æ¤¤¤Þ¤¹)¡£

19.2.4 ¥Ç¥Ð¥¤¥¹¥¹¥Ú¥·¥ã¥ë¥Õ¥¡¥¤¥ë

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19.2.4.1 ¥Ç¥Ð¥¤¥¹¥¹¥Ú¥·¥ã¥ë¥Õ¥¡¥¤¥ë¤ÎºîÀ®

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crw-rw----    1 uucp     dialer    28, 129 Feb 15 14:38 /dev/cuaa1
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crw-rw----    1 uucp     dialer    28, 193 Feb 15 14:38 /dev/cuala1

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# stty -f /dev/ttyld5 57600

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Notes

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