Of Assembly programs, then I advise you to copy these abbreviations onto notecards and try to understand why certainīits (flags) do/don't change in the register for each instruction in the program you're examining. If you really want to use MS-DEBUG (or any other debugger!) to examine the operation Two other sets which are often used together in The same way, but the programmer must still make sure that the CPU will use them as expected. For certain types of tasks, the registers are often grouped together in It does this by combining two 16-bit registers together to form a 20-bit Segment:Offset value ( which means it canĪccess over 1MB of Memory this way). OFFSET scheme whenever it needs to access Memory locations or Jump from one 64kb Segment to another. The 8086 CPU uses a method I'll call the SEGMENT: The other 16-bit ( two-byte ) registers of the 8086 CPU are: Each of these high and low halves can be accessed separately by program code: AX: Each of these registers has a High (H) and Low (L) 8-bit half which can store one Hexadecimal byte (1 byte The four main (16-bit) registers of an 8086 CPU are called: The Accumulator (AX), Base (BX), Count (CX) and Data (DX) Represented by sixteen Binary bits ( 65,535) is equivalent to FFFF in Hex. The Hexadecimal equivalent of a 12-bit Binary must have 3 digits (e.g., 101010111100 = ABC hex), and the largest Decimal number that can be Number has in Binary or Hexadecimal, you can switch between the two by grouping and converting every four Binary bits Two-digit Hex numbers (or 8-bit Binary numbers) are called bytes. When the ones and zeros of four Binary bits are grouped together (from 0000 to 1111 often called a nibble), they can be represented by a single Hex digit (from 0 to F) both of which are used to count from 0 to 15 in Decimal.Įight Binary bits (which allow for any Decimal value from 0 to 255) are represented by two Hex digits forĮxample, the Binary number 10101010 is equal to AA in Understanding texts that use a 16 or 32-bit FLAGS Registerįirst, a quick review of how Binary and Hexadecimal numbers are related:.( It may NOT be used for ANY other purpose UNLESS If (Arrays.Page may be freely copied for PERSONAL use ONLY ! I started doing a revision of Java Arrays and decided to start with sorting.Īfter sorting I can't compare the Original Array and the sorted array. Vel_fluxes = np.empty((len(windows), ux.shape)) While (i x) and np.sign(window.perpendicular_distance_unnormalized(x, y)) != np.sign(window.perpendicular_distance_unnormalized(x, y)) and window.is_point_on_segment(x, y) and window.is_point_on_segment(x, y): Left_boarder, right_boarder = center_x - radius, center_x + radiusīottom_boarder, up_boarder = center_y - radius, center_y + radius Radius = safety_value * 0.5 * (math.sqrt((window.point1 - window.point2)**2 + (window.point1 - window.point2)**2))
Print register value emu8086 code#
I want to understand how exactly the code is working times = np.zeros((len(x)), dtype=int)Ĭenter_x, center_y = 0.5 * (window.point1 + window.point2), 0.5 * (window.point1 + window.point2) I am unable to understand how this code work. The second problem is that the character that prints is wrong, if you run it and check the variable char, it has an 'Z' but it prints a 'T'.
Print register value emu8086 how to#
I have two problems at the moment, the first one is the highlighted characters are printing in a kinda random position and that messes up the rest, but I think I know why the position of the highlighted character that prints is wrong, because the interrupt that I use uses dh and dl as positioners but I do not know how to make it so it continues the flow of the rest. MOV DX,0Dh imprime asscii 13 (retorno de carro)Īs you can see, the array 'indx' have the positions of the chars (The first number is the effective lenght of said array) that I want to highlight so I check if bx is in the position of said character to print it highlighted. MOV DX,0Ah imprime asscii 10 (nueva linea) I want to print this array but also highlight specific characters from said array.