modem

Alexios Chouchoulas alexios at vennea.demon.co.uk
Sat May 24 08:45:48 EEST 1997


On Sat, 24 May 1997, Tasos Sotiropoulos wrote:

>  Sto Integrated Peripherals:
> Onboard UART1 : 3F8/IRQ4
> Onboard UART2 : 2F8/IRQ3
> Onboard UART Mode: Standard

  An to modem sou einai eswteriko kai kathetai sthn COM2, tote exeis
conflict me thn defterh onboard seiriakh sou:

Onboard UART1: 3F8/IRQ4
Onboard UART2: 2F8/IRQ3
Modem:         2F8/IRQ3

  Spot the conflict (10 points). :-)

  Prepei eite na kaneis disable thn defterh onboard seiriakh sou, eite na
thn kaneis COM{3,4}, eite na kaneis to modem sou COM{3,4}. Alla modem kai
defterh seiriakh sta idia I/O ports kai IRQ einai *KAKO* pragma. To gegonos
oti doulevei einai TYXAIO kai peristasiako. Exeis hardware conflict.



> Etsi opws einai douleuei to mouse,enw me auto to echo....>/dev/cua1 
> akouw to modem mou na sfyrizei.
> Epishs sta Win95 vlepei to mouse sto com2 kai to modem sto com3.
> Sto linux to mouse einai sto ttyS0 enw to modem sto cua2 den paizei.
> An antistrepsw tis parapanw 2 ry8miseis(me at UART1&2) tote den paizei to 
> mouse.
> Symbainei kai to e3hs koufo:trexw minicom(san root),den kanei ininialize,alla
> otan kanw Alt-A X,tote akougetai apo to modem opws otan shkwneis apla to
> thlefwno!

  Afta einai klassikotata symptwmata enos wraiou conflict (mhn perimeneis ta
95 na sou to broun fysika! Afta kseroun mono na lene oti h karta ISDN sou
(den exeis) kanei conflict me thn karta FDDI sou (den exeis), h opoia sthn
pragmatikothta einai IBM Professional Graphics Adapter (den exeis kai mallon
den ksereis kai ti einai). To Zip drive sou anagnwrizetai ws modem kai o
ektypwths sou einai networking device, etsi ki alliws). :-)


> To /proc/ioports leei:
> 0000-001f : dma1
> 0020-003f : pic1
> 0040-005f : timer
> 0060-006f : keyboard
> 0080-009f : dma page reg
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : npu
> 01f0-01f7 : ide0
> 02f8-02ff : serial(set)
> 03c0-03df : vga+
> 03e8-03ef : serial(auto)
> 03f0-03f5 : floppy
> 03f6-03f6 : ide0
> 03f7-03f7 : floppy DIR
> 03f8-03ff : serial(auto)


  Afto mou leei oti ONTWS yparxei mia COM3 edw. Mhpws to modem sou rythmizei
ta IRQ/IO ports tou mesw software? Exeis koitaksei PROSEKTIKA to manual to
modem sto shmeio pou leei gia afto?


> setserial /dev/cua1:
> /dev/cua1, UART: 16550, Port: 0x02f8, IRQ: 3, Flags: spd_vhi
>                   ^^^->exw dokimasei kai 16450 kai 16550A

  Afhne thn UART opws thn kanei autodetect to systhma. Kata 90% exei dikio.


Alexios Chouchoulas          '88    ,88'   ,88'     alexios at vennea.demon.co.uk
The Unpronouncable One      ,o88oooo88ooooo88oo,              axc at dcs.ed.ac.uk

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