What is the official hardware designation for the standard 25-pin parallel port connector?
Ch 15: 32-Bit Protected Mode Architecture
Covers transitioning from 16-bit real mode to 32-bit protected mode, setting the PE bit in CR0, constructing 8-byte segment descriptors (base, limit, access rights), and hardware memory protection rings (Ring 0 vs Ring 3).
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CS401 - Computer Architecture and Assembly Language Programming Examination Practice
Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.
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In BIOS INT 13h disk services, what is the purpose of Service 03h (AH = 0x03)?
On a standard 9-pin DB-9 RS-232 serial connector, which pin number is assigned to the TD (Transmitted Data / TXD) signal?
In a DOS.COM program, at what memory offset within the Program Segment Prefix (PSP) does the command-line argument string (command tail) begin?
On executing DOS INT 21h Service 3Dh (Open File), if the target file cannot be opened (e.g., file not found), how is the failure reported?
In DOS file systems (FAT12, FAT16, FAT32), how many bytes are allocated for a single directory entry?
On a standard 9-pin DB-9 RS-232 serial port connector, which pin number is assigned to RD (Received Data)?
In a DOS.COM executable file, what is the maximum length of command-line parameter arguments (command tail) that can be passed inside the Program Segment Prefix (PSP)?
System DOS kernel services are requested and accessed by software applications using which software interrupt vector?
In disk FAT file system formatting, what does the abbreviation BPB stand for?