谁能给我一份DOS下串口编程的资料或者源代码?谢谢! - 中国DOS联盟论坛

先是注释：
;----------------------------------------------------------------------------
;
; I N T E R R U P T 1 4
;
; coreBiosSerialInterface - The BIOS serial interface supports the
; Intel 8250 Serial chip.
; Functions available are init, send, receive, and status.
;
;
; AH = 00 - Initialize Communications Port
; Entry: DX - COM adapter to initialize (0-3)
; AL - Initialization values
;
; 7 6 5 4 3 2 1 0
; Baud rate Parity stop bits Word length
; ---------------------------------------
; 000-110 00-None 0-1 10-7 Bits
; 001-150 01-Odd 1-2 11-8 Bits
; 010-300 10-None
; 011-600 11-Even
; 100-1200
; 101-2400
; 110-4800
; 111-9600
; Exit: AH - Line status
;
;
; AH = 01 - Send Character
; Entry: DX - Communication adapter number (0-3)
; AL - Character to send
; Exit: AH - Line Status
;
;
; AH = 02 - Receive Character
; Entry: DX - Communcation adapter number (0-3)
; Exit: AL - Character received
; AH - Line Status
;
;
; AH = 03 - Return Communication Status
; Entry: DX - Communication adapter number (0-3)
; Exit: AL - Modem status
; Bit 0 - Delta clear to send
; Bit 1 - Delta data set ready
; Bit 2 - Trailing edge ring indicator
; Bit 3 - Delta (RLSD)
; Bit 4 - Clear to send
; Bit 5 - Data set ready
; Bit 6 - Ring indicator
; Bit 7 - Received line signal detect
;
; AH - Line status
; Bit 0 - Data ready
; Bit 1 - Overrun error
; Bit 2 - Parity Error
; Bit 3 - Framing Error
; Bit 4 - Break detect
; Bit 5 - Trans holding register empty
; Bit 6 - Trans shift register empty
; Bit 7 - Time out error
;
; AH = 04 - Extended Initialize (PS2 compatibility)
; Entry: DX - Communication adapter number (0-3)
; AL - Break
; 00H - No Break
; 01H - Break
; BH - Parity
; 00H - None
; 01H - Odd
; 02H - Even
; 03H - Stick parity odd
; 04H - Stick parity even
; BL - Stop Bit
; 00H - One
; 01H - Two if 6,7, or 8 bit word length
; One and one-half if 5 bit word length
; CH - Word Length
; 00H - 5 bits
; 01H - 6 bits
; 02H - 7 bits
; 03H - 8 bits
; CL - Baud Rates
; 00H - 110 baud
; 01H - 150 baud
; 02H - 300 baud
; 03H - 600 baud
; 04H - 1200 baud
; 05H - 2400 baud
; 06H - 4000 baud
; 07H - 9600 baud
; 08H - 19200 baud
;
; Exit: AL - Modem status
; Bit 0 - Delta clear to send
; Bit 1 - Delta data set ready
; Bit 2 - Trailing edge ring indicator
; Bit 3 - Delta (RLSD)
; Bit 4 - Clear to send
; Bit 5 - Data set ready
; Bit 6 - Ring indicator
; Bit 7 - Received line signal detect
;
; AH - Line status
; Bit 0 - Data ready
; Bit 1 - Overrun error
; Bit 2 - Parity Error
; Bit 3 - Framing Error
; Bit 4 - Break detect
; Bit 5 - Trans holding register empty
; Bit 6 - Trans shift register empty
; Bit 7 - Time out error
;
; AH = 05 - Extended Communications Port Control (PS2 compatibility)
; Entry: AL = 0 Read modem control register
; DX - Communication adapter number (0-3)
; Exit BL = Modem control register
;
; Entry AL = 01 Write modem control register
; DX - Communication adapter number (0-3)
; BL - Modem Control Register
;
; Exit: AL - Modem status
; Bit 0 - Delta clear to send
; Bit 1 - Delta data set ready
; Bit 2 - Trailing edge ring indicator
; Bit 3 - Delta (RLSD)
; Bit 4 - Clear to send
; Bit 5 - Data set ready
; Bit 6 - Ring indicator
; Bit 7 - Received line signal detect
;
; AH - Line status
; Bit 0 - Data ready
; Bit 1 - Overrun error
; Bit 2 - Parity Error
; Bit 3 - Framing Error
; Bit 4 - Break detect
; Bit 5 - Trans holding register empty
; Bit 6 - Trans shift register empty
; Bit 7 - Time out error
;
;============================================================================

第16楼　shim	发表于 2007-11-21 10:49
初级用户　发帖 73　积分 85
谢谢分享！

第17楼　jojand	发表于 2007-11-22 11:08
初级用户　发帖 57　积分 117
A机的发送端（TX）与B机的接收端（RX）相连，A机的接收端（RX）与B机的发送端（TX）相连，两机的地线（GND）相连；发送： OPEN "COM1:1200,N,8,1,RS,CS,DS" AS #1 PRINT #1,"OK" CLOSE #1 接收： OPEN "COM1:1200,N,8,1,RS,CS,DS" AS #1 INPUT #1,A$ CLOSE #1

第18楼　maclover815	发表于 2007-12-13 22:46
初级用户　发帖 47　积分 92
nice good

第19楼　shlinno	发表于 2007-12-19 15:49
新手上路　发帖 1　积分 2
不错啊，我也需要一个

第20楼　gaoxy2008	发表于 2008-04-11 10:25
新手上路　发帖 3　积分 5
非常感谢

第21楼　dragon123321	发表于 2008-04-11 17:30
新手上路　发帖 4　积分 7
呵呵。。串口并口编程，我的代码 http://hi.baidu.com/大伦子

第22楼　dragon123321	发表于 2008-04-11 17:31
新手上路　发帖 4　积分 7
转载时请留言哦。。我只是想认识几个朋友罢了，交流交流编程罢了，呵呵

第23楼　netwinxp	发表于 2008-04-17 09:06
高级用户　发帖 366　积分 741
Originally posted by jojand at 2007-11-22 11:08: A机的发送端（TX）与B机的接收端（RX）相连，A机的接收端（RX）与B机的发送端（TX）相连，两机的地线（GND）相连；发送： OPEN "COM1:1200 ... 对，居于com设备句柄的操作更省事。另:单片机方面可以用232芯片(如max232)来实现电平匹配从而降低对电源的要求，以前的电流环在设计中比较容易出现意外。

第24楼　danieldy	发表于 2008-05-15 12:42
新手上路　发帖 3　积分 8
我想下载，可是积分不够

第25楼　Pauly	发表于 2008-05-15 13:53
新手上路　发帖 7　积分 14
下来学习下

第26楼　ycjyh007	发表于 2008-05-16 16:15
新手上路　发帖 2　积分 4
非常感谢~学习中

第27楼　yhoyo	发表于 2008-05-16 17:03
新手上路　发帖 1　积分 2
看看...学习

第28楼　saliwen302	发表于 2008-05-21 11:43
新手上路　发帖 9　积分 18
ding qi !!

第29楼　lqhlqg123	发表于 2008-05-21 18:48
新手上路　发帖 2　积分 4
下载了，谢谢

第30楼　saliwen302	发表于 2008-05-22 14:50
新手上路　发帖 9　积分 18
贴一段phoenix 的int 14h的code吧先是注释： ;---------------------------------------------------------------------------- ; ; I N T E R R U P T 1 4 ; ; coreBiosSerialInterface - The BIOS serial interface supports the ; Intel 8250 Serial chip. ; Functions available are init, send, receive, and status. ; ; ; AH = 00 - Initialize Communications Port ; Entry: DX - COM adapter to initialize (0-3) ; AL - Initialization values ; ; 7 6 5 4 3 2 1 0 ; Baud rate Parity stop bits Word length ; --------------------------------------- ; 000-110 00-None 0-1 10-7 Bits ; 001-150 01-Odd 1-2 11-8 Bits ; 010-300 10-None ; 011-600 11-Even ; 100-1200 ; 101-2400 ; 110-4800 ; 111-9600 ; Exit: AH - Line status ; ; ; AH = 01 - Send Character ; Entry: DX - Communication adapter number (0-3) ; AL - Character to send ; Exit: AH - Line Status ; ; ; AH = 02 - Receive Character ; Entry: DX - Communcation adapter number (0-3) ; Exit: AL - Character received ; AH - Line Status ; ; ; AH = 03 - Return Communication Status ; Entry: DX - Communication adapter number (0-3) ; Exit: AL - Modem status ; Bit 0 - Delta clear to send ; Bit 1 - Delta data set ready ; Bit 2 - Trailing edge ring indicator ; Bit 3 - Delta (RLSD) ; Bit 4 - Clear to send ; Bit 5 - Data set ready ; Bit 6 - Ring indicator ; Bit 7 - Received line signal detect ; ; AH - Line status ; Bit 0 - Data ready ; Bit 1 - Overrun error ; Bit 2 - Parity Error ; Bit 3 - Framing Error ; Bit 4 - Break detect ; Bit 5 - Trans holding register empty ; Bit 6 - Trans shift register empty ; Bit 7 - Time out error ; ; AH = 04 - Extended Initialize (PS2 compatibility) ; Entry: DX - Communication adapter number (0-3) ; AL - Break ; 00H - No Break ; 01H - Break ; BH - Parity ; 00H - None ; 01H - Odd ; 02H - Even ; 03H - Stick parity odd ; 04H - Stick parity even ; BL - Stop Bit ; 00H - One ; 01H - Two if 6,7, or 8 bit word length ; One and one-half if 5 bit word length ; CH - Word Length ; 00H - 5 bits ; 01H - 6 bits ; 02H - 7 bits ; 03H - 8 bits ; CL - Baud Rates ; 00H - 110 baud ; 01H - 150 baud ; 02H - 300 baud ; 03H - 600 baud ; 04H - 1200 baud ; 05H - 2400 baud ; 06H - 4000 baud ; 07H - 9600 baud ; 08H - 19200 baud ; ; Exit: AL - Modem status ; Bit 0 - Delta clear to send ; Bit 1 - Delta data set ready ; Bit 2 - Trailing edge ring indicator ; Bit 3 - Delta (RLSD) ; Bit 4 - Clear to send ; Bit 5 - Data set ready ; Bit 6 - Ring indicator ; Bit 7 - Received line signal detect ; ; AH - Line status ; Bit 0 - Data ready ; Bit 1 - Overrun error ; Bit 2 - Parity Error ; Bit 3 - Framing Error ; Bit 4 - Break detect ; Bit 5 - Trans holding register empty ; Bit 6 - Trans shift register empty ; Bit 7 - Time out error ; ; AH = 05 - Extended Communications Port Control (PS2 compatibility) ; Entry: AL = 0 Read modem control register ; DX - Communication adapter number (0-3) ; Exit BL = Modem control register ; ; Entry AL = 01 Write modem control register ; DX - Communication adapter number (0-3) ; BL - Modem Control Register ; ; Exit: AL - Modem status ; Bit 0 - Delta clear to send ; Bit 1 - Delta data set ready ; Bit 2 - Trailing edge ring indicator ; Bit 3 - Delta (RLSD) ; Bit 4 - Clear to send ; Bit 5 - Data set ready ; Bit 6 - Ring indicator ; Bit 7 - Received line signal detect ; ; AH - Line status ; Bit 0 - Data ready ; Bit 1 - Overrun error ; Bit 2 - Parity Error ; Bit 3 - Framing Error ; Bit 4 - Break detect ; Bit 5 - Trans holding register empty ; Bit 6 - Trans shift register empty ; Bit 7 - Time out error ; ;============================================================================