X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 0f - irq7

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INT 0F - IRQ7 - PRINTER INTERRUPT
   Generated by the LPT1 printer adapter when printer becomes ready.
Notes:  most printer adapters do not reliably generate this interrupt.
        the 8259 interrupt controller generates an interrupt corresponding to
          IRQ7 when an error condition occurs
SeeAlso: INT 57

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