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Or sir X80-64 : extending ia32 to 64 bits in assembly language pr bhi video post kr dain 1 ya 2 days tk

Sir pipelined Y86 implementations pr video bna k post kr dain 1 ya 2 days tk

thank you sir

😮😮😮

please sir keep it up ...realy nice explanation

Bhai kia ap issi book ka 3rd chap kra sakty ho? It's a request, kuch dino myn exams hyn please,help ho jay gi😕

Really helped for my roughest assumed subject , you made it simple to understand otherwise on the books it just creates pressure on my mind 😢,thank u❤

❤❤

Very well 🥰

mov dl, "a" ; moves the number of the ASCII "a" into data register ... mov ah, 4ch ; moves 4C into high byte of the accumulator

Exam at 1 pm Me watching your video at 11:30

💗💗💗

Good work.❤

For instructions with a memory location i prefer to have brackets[var] to prevent confusing with a constant. Example: "mov dl, [var]"

With using DataType with bytes like "myVar DB 4, 0, 0, 0" we can read/write a byte, or a word, or a dword. With using DataType with words like "myVar DW 4, 0" we can read/write a word, or a dword. And with using DataType with dwords like "myVar DD 4," we can read/write a dword. We have to use little endian in memory lowest byte first.

Yes we can give a location in the memory a name to use it as an offset address of the specific location in memory for to read/write one byte, two bytes(word), or four bytes(dword) at once. The best location for read/write a word is an address that can divided by 2 and for dword divided by 4 for data alignment and best performance.

I like to have brackets[A] for instructions with a memory location like mov ax,[A] else we can confuse it with a constant: A = 5

DosBox provide 80386 CPU, so we ca use 16 bit instructions, 32 bit instructions and floating point instructions. For Masm listing we can use 32 bit with protect mode and floating point: .386p .387

Sir video editing o. Bara. D e video belik. La. Awa. Vlog sawzem re. Editing o. No. Boman

Sir video editing o. Bachen kya channel o videos lolik. La 🙏

Jazak Allah Khair Tremendous work

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Amazing video Sir 🥰♥️♥️

❤❤❤

Very good

Great sir 😊

MashaAllah ♥️🥀❣️

Jazaak Allah Sir

osm bro keep it up

"promosm" 👌

Thank you sir

Sir Best of luck

This is going to be great. Please complete this playlist ASAP

Thanks 👍

Thank you sir 😘

Sir g word leacture upload Kara please

Sir 🌸

Sir🎉

Very nice sir g

INT 10h AX=1110h USER FONT is listed online within a table of interrupt numbers html version of Ralph Browns interrupt list (RBIL). Example to change the pixel inside of 2*4=8 ASCII character (8x16 font size) start with ASCII number 41h,42h,43h,44h and next line 45h,46h,47h,48h to put pixel art inside: ABCD EFGH mov ax,1110h mov bp,0118h ; offset of user font mov cx,8 mov dx,41h ; capital A xor bl,bl mov bh,10h int 10h (table need to add h for hex value in masm, sorry) org 0118 DB 0,0,1,7,1f,3f,7f,7f,7f,7e,7c,7c,7c,7c,7c,7c DB 0,3f,ff,ff,ff,ff,ff,ff,1f,f,7,7,7,7,7,7 DB 0,fc,ff,ff,ff,ff,ff,ff,f8,f0,e0,e0,e0,e0,e0,e0 DB 0,0,80,e0,f8,fc,fe,fe,fe,7e,3e,3e,3e,3e,3e,3e REM 00000000 00000000 00000000 00000000 REM 00000000 00111111 11111100 00000000 REM 00000001 11111111 11111111 10000000 REM 00000111 11111111 11111111 11100000 REM 00011111 11111111 11111111 11111000 REM 00111111 11111111 11111111 11111100 REM 01111111 11111111 11111111 11111110 REM 01111111 11111111 11111111 11111110 REM 01111111 00011111 11111000 11111110 REM 01111110 00001111 11110000 01111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 DB 7c,7c,7c,7c,7c,3e,3f,3f,1f,7,3,1,0,0,0,0 DB 7,7,7,7,7,7,1f,fe,fc,fc,ff,c0,f0,7f,f,0 DB e0,e0,e0,e0,e0,e0,f8,7f,3f,3f,ff,3,f,fe,f0,0 DB 3e,3e,3e,3e,3e,7c,fc,fc,f8,e0,c0,80,0,0,0,0 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 01111100 00000111 11100000 00111110 REM 00111110 00000111 11100000 01111100 REM 00111111 00011111 11111000 11111100 REM 00111111 11111110 01111111 11111100 REM 00011111 11111100 00111111 11111000 REM 00000111 11111100 00111111 11100000 REM 00000011 11111111 11111111 11000000 REM 00000001 11000000 00000011 10000000 REM 00000000 11110000 00001111 00000000 REM 00000000 01111111 11111110 00000000 REM 00000000 00001111 11110000 00000000 REM 00000000 00000000 00000000 00000000

The output of these software interrupts for system call can be redirect to printer or file too, so there are a lot of instructions that have to check which way to go. This is not the fastest methode to output a single ASCII to the screen. If we want a faster output we can write directly into the screen memory at segment 0B800h offset 0000 = upper left corner. Example: mov ax, 0b800h mov es, ax xor di, di mov al, "z" cld stosb ------- Variation: mov ax, 0b800h mov es, ax xor di, di mov al, "z" mov es:[di], al

On older PC before Pentium 4 was made the push and pop instructions are slower than mov and mov instructions example writing into and reading from the data segment. So better don’t use and ignore the calling convention on older PC and use mov instructions instead and then you don’t have to care about the stack pointer or how to get values multiple times from within nested subroutines. I use a tiny stack only for return addresses of call instructions and nothing else.

Good work.❤

I like to make tiny executable com files for DosBox with a little help from debug. I put all instructions into batch files to make it open source and easy to copy&paste. Executable com files are limited to 64 kb file size and the CS=SS=DS segment are sharing 64 kb. I made some videos(no speech) to show how it works and to share the batch files. Have fun.😊

Download the tools here. drive.google.com/file/d/14bsTFWA0CqEQC6IhQ0VoAF72Uv5auqoe/view?usp=sharing

Well explained, highly recommended

Good job! Keep it up dear❤

Nice sir