I got it..... Thanks a lot for all the help. regards, Joy.M.Monteiro
On Sun, 23 Jan 2005 09:17:22 +0100, Jan Wagemakers <[EMAIL PROTECTED]> wrote: > joy merwin monteiro <[EMAIL PROTECTED]> schreef: > > >>> mov dx,port > >>> mov al,0xff > >>> out 378h,al <----- segfault here > >> "out dx, al", as Jan suggests... > > However, Jan's musice speaker on the site above uses > > "out 43h,al" > > This is how OUT works : > > | OUT - Output Data to Port > | > | Usage: OUT port,accum > | Modifies flags: None > | > | Transfers byte in AL,word in AX or dword in EAX to the specified > | hardware port address. If the port number is in the range of 0-255 > | it can be specified as an immediate. If greater than 255 then the > | port number must be specified in DX. Since the PC only decodes 10 > | bits of the port address, values over 1023 can only be decoded by > | third party vendor equipment and also map to the port range 0-1023. > > So, if port > 255 then use dx ;-) > > -- > Met vriendelijke groetjes - Jan Wagemakers - > > - Debian GNU/Linux 3.1 - Up : 25 days > - > To unsubscribe from this list: send the line "unsubscribe linux-assembly" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- people always turn away, from the eyes of a stranger... Afraid to know what lies behind the stare....... --QueensRyche - To unsubscribe from this list: send the line "unsubscribe linux-assembly" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
