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
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