glc bx u

by the command are stored in the register, or the target operations are stored in the register. The addressing method of the register used in the instruction is calledRegister addressing.The registers that can be referenced in the command and their symbols are as follows:The 8-bit registers include AH Al bh bl ch Cl dh dl.16-bit ax bx cx dx Si Di SP bp and segment register32-bit eax EBX ECx edX ESI EDI ESP EBP The register addressing method is also

First chapter Detection point 1.11) (8KB = 8 * 1024x768 = 2^13) 2) 0 10233) 8*1024 (1 byte = 8 bit, computer in bytes) 4) 1024^3 1024^2 1024 5) 2^6 1 2^4 2^2 (KB = 2^10 Mb = 2^20 Gb = 2^30) 6) 1 1 2 2 47) 512 256 (8086 Register is a 16-bit register, can read two bytes at a time, 80386 is 32-bit register) 8) binaryChapter II Detection point 2.11) AX = F4a3hax = 31a3hax = 3123hAX = 6246hBX = 826ChCX = 6246hAX = 826ChAX = 04d8hax = 0482hAX = 6c82hax = d882ha X = D888hax = D810hax = 6246h2) mov ax,2

segments, initseg refers to the segment address that jumps to, and the label go is the offset address within the paragraph.go: mov Ax,CSSet Ds,ss and Es to the segment where code is copied after the code.mov DS,Ax mov es,Ax! PutStack at 0x9ff00.mov SS,Ax mov SP,#0xff00! Arbitrary value >> +Sets the top pointer of the stack, much larger than +byte offset.LoadThe setup-sectors directly after the bootblock.! Note that' es 'is already set up.! Load the Setup module code data, note that ES al

to various models, we recommend that you use the 8086 assembly language with the best compatibility. All the languages mentioned in this article are 8086 assembly languages. Registers are internal components of the CPU, so data transmission between registers is very fast. Purpose: 1. perform arithmetic and logical operations on the data in the register. 2. The address stored in the Register can point to a location in the memory, that is, addressing. 3. It can be used to read and write data to p

ensure that the assembler program is applicable to various models, we recommend that you use the 8086 assembly language with the best compatibility. All the languages mentioned in this article are 8086 assembly languages. Registers are internal components of the CPU, so data transmission between registers is very fast. Purpose: 1. perform arithmetic and logical operations on the data in the register. 2. The address stored in the Register can point to a location in the memory, that is, addressin

assembler program is applicable to various models, we recommend that you use the 8086 assembly language with the best compatibility. All the languages mentioned in this article are 8086 assembly languages. Registers are internal components of the CPU, so data transmission between registers is very fast. Purpose: 1. perform arithmetic and logical operations on the data in the register. 2. The address stored in the Register can point to a location in the memory, that is, addressing. 3. It can be

components of the CPU, so data transmission between registers is very fast. Purpose: 1. perform arithmetic and logical operations on the data in the register. 2. The address stored in the Register can point to a location in the memory, that is, addressing. 3. It can be used to read and write data to peripheral devices on the computer. 8086 has 8 8 8-bit data registers, which can form 16-bit registers: AH AL = AX: Accumulate registers, which are commonly used in operations; BH BL =

difficult to remember 0100100 into a format that is easy to remember, so that people can understand a little bit. If the contents of the register BX sent to AX, the corresponding machine instruction is: 100001001110110000 (completely do not know what the thing, if you really want to scrutiny, then you have to see its circuit connected), and into the assembly instruction after: MOV ax, bx. Haha, is not easy

1.and or directive And logic and: The truth is True You can set one of the operand objects to 0: For example, sixth place: Then and al,10111111b Or OR operation: false for the same false You can set one of the operand objects to 1: For example, sixth place: Then and al,01000000b Uppercase and lowercase conversion in ASCII code: 32 is 2 of the 5-time difference. Byte position differs in 5th place You can easily convert the case by using the above operation 2.[

You can display the time by loading the RTC Interrupt program with the loader of the previous operating system kernel loader (x86 assembler).; user.asm; The header file of the program, the information table of the whole program;--------Header-----------------------------------section header align=16 vstart= 0program_length DD program_endprogram_entry DW start DD section.code.startsection_count DW (sectio N_end-section_begin)/4section_begin:section_code DD section.code.startsection_data DD Sectio

The more explored here is the mechanism of pointers.with Debug The following procedures are analyzed to record each article C the value of the associated memory cell after the statement is run. program A.CAttention to understanding pointer mechanismWe write the following code:Compile load into Debug view:Let's start by looking at its disassembly code:Here we compare the C statement analysis:The first statement is the 1000H (16 binary, the following 16 in the H description, not the description is

-number of seconds (5)Atone DB 5; Alarm Tone-may is from 1 to 255-the; Higher the number, the lower the frequencyAleng DW 8080h; Alarm Length (loop count) May is from 1-FFFFDhours DW 0; Display hoursDB ': 'Dmins DW 0; Display minutesDB ': 'Dsecs DW 0; Display secondsDB '-'AMPM DB 0; ' A ' or ' P ' for AM or PMDB ' m 'Tstack db dup (' stack '); Temporary stackEstack DB 0; End of StackHOLDSP DW 0; Original SPHOLDSS DW 0; Original SSp000:; Interrupt CodePush ax; Save RegistersPush DSPushfPush CSPop

address expression (without the default segment register), which automatically generates a "cross-segment prefix byte". Note that the segment register CS and ES cannot be spanned, and the stack operation cannot span the SS.;: Comment symbol.%: Special macro operator used to convert the subsequent expression (usually a symbolic constant, not a variable name and register name) to the value it represents, and embed the ASCII code of this value into the macro extension.(): 1. Operator--Used to chan

The following code is stripped from the kesion system, which is really good and supports the UTF8 format. Copy Code code as follows: '================================================ ' Function name: UrlDecode ' Function: URL decoding '================================================ Function UrlDecode (ByVal urlcode) Dim Start,final,length,char,i,butf8,pass Dim Leftstr,rightstr,finalstr Dim B0,b1,bx,blength,position,u,utf8 On Erro