Messages in this thread | | | From | Ondrej Zary <> | Subject | Re: Debugging APM - cat /proc/apm produces oops | Date | Sun, 23 Jul 2006 16:41:33 +0200 |
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On Sunday 23 July 2006 16:30, Ondrej Zary wrote: > I've tried calling the APM 0x530A function from DOS (real mode, int 15h) > and single-stepping the BIOS APM code (using good old user-friendly Turbo > Debugger). Noticed some OUTs to 0xB1 (or something like that), then some > PCI accesses (0xCF8 and 0xCFC) and then IP ended in area of all zeros. When > I step over the int 15h call, it works fine - returns correct info.
Sorry, this was my bad. It works fine even when single stepping. I've made a mistake and stepped over the ending int 20h instruction of my .com program...
I'm probably going to write down complete sequence of instructions which get executed during the call.
-- Ondrej Zary - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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