Here the Andreas' data when its parallel port is in ECP, when the
printing breaks:
<6>parport0: PC-style at 0x378 [SPP,ECP,ECPEPP,ECPPS2]
root(ttyp9):~ # cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
02f8-02ff : serial(auto)
0330-0331 : mpu401
0332-0337 : SoundScape
0378-037f : parport0
03c0-03df : vga+
03f8-03ff : serial(auto)
0534-0537 : SoundScape
0580-0581 : teles3c isdn
0778-077a : parport0
^^^^^^^^^^^^^^^^^^^^ This should be the ECR but I don' t know a lot about
^^^^^^^^^^^^^^^^^^^^ ECP.
e000-e0be : aic7xxx
root(ttyp9):~ # cat /proc/interrupts
CPU0
0: 955727 XT-PIC timer
1: 24751 XT-PIC keyboard
2: 0 XT-PIC cascade
4: 2025 XT-PIC serial
5: 40476 XT-PIC SoundScape
9: 2 XT-PIC SoundScape
10: 21339 XT-PIC aic7xxx
11: 280 XT-PIC HiSax
12: 99018 XT-PIC PS/2 Mouse
13: 1 XT-PIC fpu
NMI: 0
root(ttyp9):~ # cat /proc/dma
0: SoundScape
1: SoundScape
4: cascade
I will sent to Andreas some debugging patch soon to understand at least if
the bug is in the parallel-port or in the parport code.
Andrea[s] Arcangeli
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