Messages in this thread | | | From | Andreas Muck <> | Subject | Re: More parport troubles | Date | 18 Apr 1998 01:30:41 +0200 |
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On Fri, 17 Apr 1998, Tim Waugh wrote:
>> Anyway, in 2.1.88 with IRQ 8 seems to work fine. > >Er.. really? Is lp actually interrupt-driven for you in 2.1.88?
Well, that's what /proc/parport/0/hardware sais:
base: 0x378 irq: 8 dma: none modes: SPP,ECPEPP,ECPPS2
And on booting I get:
<6>parport0: PC-style at 0x378, irq 8 [SPP,ECPEPP,ECPPS2] <6>parport0: no IEEE-1284 device present.
>> Well, I'm puzzled why 2.1.88 uses IRQ 8 and it even works with it. Let > >That 2.1.88 uses IRQ 8 isn't so surprising - that it works is.
On a second thought, seems like it still uses polling, even if it lists the irq in /proc. The counter in /proc/interrupts doesn't increase when I print something:
CPU0 0: 12095045 XT PIC timer 1: 110379 XT PIC keyboard 2: 0 XT PIC cascade 3: 7 XT PIC serial 4: 1863925 XT PIC serial 5: 248340 XT PIC SoundScape 8: 0 XT PIC parport0 9: 2 XT PIC SoundScape 11: 1909153 XT PIC aic7xxx 12: 517581 XT PIC PS/2 Mouse 13: 1 XT PIC fpu 15: 42328 XT PIC ide1 NMI: 0
Only "parport0" changed to "lp" and back a few times while it was printing :)
Andi -- The best defense against logic is ignorance.
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