sdileni IRQ - 4 COMy v PC

[Michal TALMAN]

Pouzivam ISA kartu (nejaka noname, je na ni jen IR/HIGH SPEED SERIAL CARD, 16BIT IRQ SETTING) s COM porty a tu jsem nasvitcoval tak, aby odpovidala dle vypisu:
Vzpis setserial -g /dev/ttyS*:

/dev/ttyS0, UART 16550A, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART 16550A, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART 16550A, Port: 0x03e8, IRQ: 4
/dev/ttyS3, UART 16550A, Port: 0x02e8, IRQ: 3

Na ttyS0-S2 potrebuji zavesit tri modemy USRobotics Everything. Jenze jakmile spustim pres /etc/inittab MGETTY na ttyS0 a ttyS2 resp. ttyS1 a ttyS3 tj. na stejnych IRQ, tak mi ten modem, ktery se bezi na vyssim ttyS, neodpovida - lze to videt v /var/log/ttySx:

05/11 14:12:28 yS0  lowering DTR to reset Modem
05/11 14:12:28 yS0  send: ATZ[0d]
05/11 14:12:28 yS0  waiting for ``OK'' ** found **
05/11 14:12:29 yS0  send: ATX1[0d]
05/11 14:12:29 yS0  waiting for ``OK'' ** found **
05/11 14:12:29 yS0  mdm_send: 'ATI'
05/11 14:12:39 yS0  Warning: got alarm signal!
05/11 14:12:39 yS0  mdm_read_byte: read returned -1: Interrupted system call
05/11 14:12:39 yS0  mdm_get_line: cannot read byte, return: Interrupted system call
05/11 14:12:39 yS0  mdm_identify: can't get modem ID
05/11 14:12:39 yS0  mdm_send: 'AT+FCLASS=?'
05/11 14:12:49 yS0  Warning: got alarm signal!
05/11 14:12:49 yS0  mdm_read_byte: read returned -1: Interrupted system call
05/11 14:12:49 yS0  mdm_get_line: cannot read byte, return: Interrupted system call
05/11 14:12:49 yS0  available modem classes: <ERROR>
05/11 14:12:49 yS0  mdm_send: 'AT+FCLASS=2'
05/11 14:12:59 yS0  Warning: got alarm signal!

Tusi nekdo kde by mohla byt chyba ? mam RH 6.2CZ

Diky

M.T.