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Graphics Interchange Format  |  2000-05-25  |  2.9 KB  |  290x210  |  4-bit (3 colors)
   ocr: Interrupt MaskRegister / 6 - 54 3 2 1 U ontoller Adrs 21h 0A1h RQO 7 - IRQ8 8 RQ1 I IRQ 9 IRQ 2 I IRQ - 10 IRQ 3 - I IRQ 11 RQ47 - RQ1 12 RO 51 IRQ 13 RO 6 - I IRQ 14 RQ7 I RO - 15 To disable a specific device's interrupt, write a one to the mask register To enable aspeatic device's interrupt, write azero to the mask register