Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The regions of a 1 MB (Mega Byte) Memory are shown in the diagram below. Each memory register is 1B (Byte). The memory regions are as follows: 256 KB RESERVED, 512KB RAM, 128KB SCREEN, and 1B KEYBOARD. Their arrangement is shown in the diagram below. 0 22⁰-1 RESERVED RAM SCREEN KEYBOARD UNUSED 256 KB 512 KB 128 KB 1 B Fill in the blanks to submit your answer to the following questions: (a) The lowest memory address associated with the 512KB RAM is complete 20-bit address in HEXADECIMAL notation without spaces. Note: For example, the lowest memory address associated with the RESERVED region is 0x00000 in HEXADECIMAL notation. (b) The highest memory address associated with the 512KB RAM is complete 20-bit address in HEXADECIMAL notation without spaces. Write the . Write the (c) The memory-mapped IO address of the 1B Keyboard register is complete 20-bit address in HEXADECIMAL notation without spaces. (d) Say we utilize a DMUX8Way to route the load signal to the various regions of the memory in order to perform a data write. What would be the binary values of the DMUX8Way select bits needed in order to perform data write to SCREEN? . Note: For example, if the select bits 2:0 were 011 then you'd write Ob011 or 011 . Write the
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Transcribed Image Text:The regions of a 1 MB (Mega Byte) Memory are shown in the diagram below. Each memory register is 1B (Byte). The memory regions are as follows: 256 KB RESERVED, 512KB RAM, 128KB SCREEN, and 1B KEYBOARD. Their arrangement is shown in the diagram below. 0 22⁰-1 RESERVED RAM SCREEN KEYBOARD UNUSED 256 KB 512 KB 128 KB 1 B Fill in the blanks to submit your answer to the following questions: (a) The lowest memory address associated with the 512KB RAM is complete 20-bit address in HEXADECIMAL notation without spaces. Note: For example, the lowest memory address associated with the RESERVED region is 0x00000 in HEXADECIMAL notation. (b) The highest memory address associated with the 512KB RAM is complete 20-bit address in HEXADECIMAL notation without spaces. Write the . Write the (c) The memory-mapped IO address of the 1B Keyboard register is complete 20-bit address in HEXADECIMAL notation without spaces. (d) Say we utilize a DMUX8Way to route the load signal to the various regions of the memory in order to perform a data write. What would be the binary values of the DMUX8Way select bits needed in order to perform data write to SCREEN? . Note: For example, if the select bits 2:0 were 011 then you'd write Ob011 or 011 . Write the
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