{"id":19706,"date":"2024-04-15T05:42:58","date_gmt":"2024-04-15T05:42:58","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19706"},"modified":"2024-04-15T05:42:58","modified_gmt":"2024-04-15T05:42:58","slug":"what-is-done-in-mode1-of-z80-a-interrupt-vector-is-supplied-via-the-external-bus-b-interrupt-vector-is-supplied-via-the-peripherals-c-nmi-gets-started-d-interrupt-gets-acknowledge-from-peripheral","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/what-is-done-in-mode1-of-z80-a-interrupt-vector-is-supplied-via-the-external-bus-b-interrupt-vector-is-supplied-via-the-peripherals-c-nmi-gets-started-d-interrupt-gets-acknowledge-from-peripheral\/","title":{"rendered":"What is done in mode1 of Z80? A. Interrupt vector is supplied via the external bus B. Interrupt vector is supplied via the peripherals C. NMI gets started D. Interrupt gets acknowledge from peripheral"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;Interrupt vector is supplied via the external bus&#8221; option2=&#8221;Interrupt vector is supplied via the peripherals&#8221; option3=&#8221;NMI gets started&#8221; option4=&#8221;Interrupt gets acknowledge from peripheral&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is: A. Interrupt vector is supplied via the external bus.<\/p>\n<p>In mode 1, the Z80 fetches the interrupt vector from the external bus. The interrupt vector is a 16-bit address that points to the interrupt service routine. The interrupt service routine is a program that is executed when an interrupt occurs.<\/p>\n<p>The other options are incorrect because:<\/p>\n<ul>\n<li>Option B is incorrect because the interrupt vector is not supplied via the peripherals.<\/li>\n<li>Option C is incorrect because the NMI (non-maskable interrupt) is not started in mode 1.<\/li>\n<li>Option D is incorrect because the interrupt is not acknowledged from the peripheral in mode 1.<\/li>\n<\/ul>\n<p>I hope this helps! Let me know if you have any other questions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;Interrupt vector is supplied via the external bus&#8221; option2=&#8221;Interrupt vector is supplied via the peripherals&#8221; option3=&#8221;NMI gets started&#8221; option4=&#8221;Interrupt gets acknowledge from peripheral&#8221; correct=&#8221;option1&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[686],"tags":[],"class_list":["post-19706","post","type-post","status-publish","format-standard","hentry","category-embedded-systems","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is done in mode1 of Z80? A. Interrupt vector is supplied via the external bus B. 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