Re: [PATCH] restore floppy boot image

From: Timothy Miller (miller_at_techsource.com)
Date: 06/30/04

  • Next message: Randy.Dunlap: "Re: Crash when loading a module (without executing any code of the module!)" 
    Date:	Wed, 30 Jun 2004 17:33:17 -0400
To: Joshua <jhudson@cyberspace.org>

    Joshua wrote:

    > +/*
    > + * Routine errcode prints a diagnostic to the screen
    > + * Used for debugging and for printing BIOS error codes
    > + */
    > +errcode:
    > + mov %ah, %dh
    > + mov $1, %cx
    > +print_hex:
    > + mov $10, %ah
    > + mov $7, %bx
    > +phl: mov %dh, %al
    > + shr $4, %al
    > + and 15, %al
    > + add $0x90, %al
    > + daa
    > + add $0x40, %al
    > + daa
    > + int $0x10
    > + shl $4, %dx
    > + loop phl

    This loop will not loop. You've set CX to 1.
    LOOP is like "} while (--CX);".

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  • Next message: Randy.Dunlap: "Re: Crash when loading a module (without executing any code of the module!)"

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