In al 3f8h
WebTo set the bps rate of COM1 [3F8h] to 19200,8,N,1 you would do this: MOV DX,3FBh IN AL,DX OR AL,10000000b ;Set bit 7 of the line control register ;To put it into 'set baud rate mode' … http://computer-programming-forum.com/46-asm/43bd3f5c78a13ac4.htm
In al 3f8h
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WebApr 8, 2010 · in al,3f8这个语句有2个问题,如下: 1.3F8后应该加上H,写成3F8H 2.AL最大只能存放到 FFH,超过FFH的要借助DX来访问,否则无法生成指令,编 译时会报错。 WebNormal, allows normal-speed operation but in one direction only; EPP allows bidi-. rectional parallel port operation at maximum speed; ECP allows the parallel port to. operate in bidirectional mode and at a speed faster than the maximum data transfer. rate; ECP+EPP allows normal speed operation in a two-way mode.
Webselect the transmit register by writing to I/O addresses 3F8h or 2F8h, you select the receive register by reading from these addresses. Assuming the transmit register is empty, writing … WebJun 15, 2009 · Onboard Serial Port: This setting allocates an address and IRQ for your motherboard's serial port. Unless you're experiencing any IRQ conflicts, you should leave this setting on Auto (if it's an...
WebApr 12, 2024 · 首先,本总结参考了王爽的《 汇编语言. 汇编 in out的 用法 示例. 汇编语言中 , 对外设的操作通过专门的端口读写指令来完成; 读端口用IN指令,写端口用OUT指令。. … WebEight Mile is an unincorporated community in Mobile County, Alabama, United States. The community is named for its distance from the city of Mobile. Part of it was annexed in the …
WebMar 4, 2024 · As the standard serial port configuration is 3F8H and 2F8H, a first guess is that serial ports are enabled in this configuration (because motherboard serials very rare). …
WebJun 9, 2016 · In your case 38fh starts with a number so it is assumed to be a value. The end of the token in your case is h (or H) so it is treated as hexadecimal number. So 38f is … dark brown billy bookcaseWebThe byte read is written to AL. If AX is specified as the destination, then a word is read from the port. In this case, the port only gives us a byte to read (i.e. I/O port address 3F8H or … dark brown behr paintWebJan 23, 2024 · You should plan to have your modem use one of the standard settings listed below for the best software compatability even though your modem may support IRQ 2, 3, 4, 5 or 7. It important to make sure that no other device is configured to use the same IRQ and I/O address as your modem. dark brown bed frameWebJun 15, 2009 · HDD S.M.A.R.T. Monitor: Short for Smart Monitoring Analysis and Reporting Technology, this serves as a preventative diagnostic to help predict imminent hard drive … biscayne veterinary clinicWebwhat i basically want to do is do a chat thing using serial ports, pretty much like Choink23 is trying to do in another thread. here's the code i've done so far: segment .text global _asm_main _asm_main: enter 0,0 pusha mov dx, 0 ;send 'a' through com1 mov al, 'a' mov ah, 1 int 14h mov ah,3 ;check serial port status int 14h ;to check if data is ... dark brown berber carpetingWebJun 23, 2010 · The following list of IRQ numbers specifies what each of the 16 IRQ lines are used for. This interrupt is reserved for the internal system timer. It is never available to … dark brown beef gravyWebJul 24, 2007 · mov al, 42 out 3F8h, al Unless you're in real mode, the OS may have something to say about whether you can actually access the port... Best, Frank. Logged nobody Guest; Re: send characters through serial port « Reply #2 on: July 24, 2007, 01:22:57 AM ... dark brown bench seat console