\ud83d\udc49\ufe0f 32\ube44\ud2b8 \ubcf4\ud638\ubaa8\ub4dc(\uadf8\ub798\ud53d\ubaa8\ub4dc)\uc5d0\uc11c \ud654\uba74\uc5d0 \uc0ac\uac01\ud615\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ucf54\ub4dc\uc785\ub2c8\ub2e4. This is code that displays a rectangle on the screen in 32-bit protected mode (graphics mode).<\/p>\n\n\n\n
\ud83d\udc49\ud83c\udffb \uc774\uc804 miniOS-7\uc5d0\uc11c \ucf54\ub4dc\uc5d0\uc11c \ubc14\ub010 \ubd80\ubd84\ub9cc \uc124\uba85\ud569\ub2c8\ub2e4. This section explains only the changes made to the code from the previous miniOS-7.<\/p>\n\n\n\n
— boot.asm\uc5d0\uc11c 2\ubc88 \uc139\ud130 \ucf54\ub4dc\ub97c 1\uc5d0\uc11c 10\uc73c\ub85c \uc218\uc815\ud569\ub2c8\ub2e4. In boot.asm, change the sector code from 1 to 10.<\/p>\n\n\n\n
mov al, 10 ; \u2705 1\uc5d0\uc11c 10\uc73c\ub85c \uc218\uc815 (\ub109\ub109\ud558\uac8c \uc77d\uc5b4\uc634)\n ; Adjusted from 1 to 10 (read with a generous margin)<\/code><\/pre>\n\n\n\n
1)\uae30\uc874 \uc5b4\uc148\ube14\ub9ac \ucf54\ub4dc\uc678\uc5d0 c\uc5b8\uc5b4 \ucf54\ub4dc\ub97c \ucd94\uac00\ud558\uba74 \uc6a9\ub7c9\uc774 \uc99d\uac00\ud558\uae30 \ub54c\ubb38\uc5d0 c\uc5b8\uc5b4 \ucf54\ub4dc\uc6a9\ub7c9\uae4c\uc9c0 \uace0\ub824\ud574\uc11c 10\uc139\ud130\uae4c\uc9c0 \uc77d\uc5b4 \uc624\ub3c4\ub85d \ud569\ub2c8\ub2e4. Since adding C code alongside the existing assembly code increases the total size, the system is configured to read up to 10 sectors to accommodate the C code.<\/p>\n\n\n\n
2) 10\uac1c \uc139\ud130\ub85c \ub109\ub109\ud558\uac8c \uc9c0\uc815\ud574 \ub450\uba74 \ucf54\ub4dc\uac00 \uc798\ub9ac\ub294 \uc77c \uc5c6\uc774 \uc548\uc815\uc801\uc73c\ub85c \uba54\ubaa8\ub9ac\uc5d0 \ub2e4 \ub85c\ub4dc\ub429\ub2c8\ub2e4. By generously allocating 10 sectors, the code loads reliably into memory in its entirety without being truncated.<\/p>\n\n\n\n
\u2714\ufe0f sector2.asm<\/p>\n\n\n\n
— [org 0x8000]\ub97c \uc8fc\uc11d\ucc98\ub9ac \ud558\uac70\ub098 \uc81c\uac70\ud569\ub2c8\ub2e4. Comment out or remove [org 0x8000].<\/p>\n\n\n\n
1)[org 0x8000] \uc774 \ucf54\ub4dc\ub294 \uc21c\uc218 \ubc14\uc774\ub108\ub9ac\uc6a9 \uc785\ub2c8\ub2e4. [org 0x8000] This code is for a raw binary.<\/p>\n\n\n\n
2) \uadf8\ub798\uc11c \ucf54\ub4dc \uc548\uc5d0 \uc788\ub294 \ubcc0\uc218\ub098 \ud568\uc218\ub4e4\uc758 \uc8fc\uc18c\ub97c \ubbf8\ub9ac 0x8000 \uae30\uc900\uc73c\ub85c \uc804\ubd80 \uace0\uc815\ud574\uc11c \ud558\ub098\uc758 \uc644\uc131\ub41c \ubc14\uc774\ub108\ub9ac(.bin) \ud30c\uc77c\ub85c \ucef4\ud30c\uc77c\ud569\ub2c8\ub2e4. Therefore, the addresses of all variables and functions within the code are fixed in advance based on the 0x8000 address, and the code is compiled into a single, complete binary (.bin) file.<\/p>\n\n\n\n
3)C\uc5b8\uc5b4\ub97c \uc0ac\uc6a9\ud558\uac8c \ub418\uba74 C\uc5b8\uc5b4 \ud30c\uc77c(kernel.c)\uacfc \uc5b4\uc148\ube14\ub9ac \ud30c\uc77c(sector2.asm)\uc744 \ud568\uaed8 \ubb36\uc5b4\uc57c \ud569\ub2c8\ub2e4. When using the C language, you must combine the C source file (kernel.c) and the assembly file (sector2.asm).<\/p>\n\n\n\n
4)\uadf8\ub798\uc11c \uc21c\uc218 \ubc14\uc774\ub108\ub9ac\uac00 \uc544\ub2cc, \uc870\ub9bd\uc6a9 \ubd80\ud488 \uc0c1\ud0dc\uc778 \uc624\ube0c\uc81d\ud2b8 \ud30c\uc77c(.o)\ub85c \ucef4\ud30c\uc77c\ud558\uac8c \ub429\ub2c8\ub2e4. Therefore, instead of a pure binary, it is compiled into object files (.o)\u2014components intended for assembly.<\/p>\n\n\n\n
5) \uadf8\ub7ec\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \ucef4\ud30c\uc77c\uc744 \uc2e4\ud589\ud569\ub2c8\ub2e4. Then, run the compilation as follows.<\/p>\n\n\n\n
6)\uc774\ub54c \uc774\ubbf8 \ucef4\ud30c\uc77c\ud588\ub358 sector2.o\uc640 kernel.o\ub97c \ubb36\uc5b4\uc11c sector2.bin\ud30c\uc77c\uc744 \uc0dd\uc131\ud558\uba70 text \uc139\uc158 0x8000 \uc8fc\uc18c\ub85c \uc815\ub82c\ud569\ub2c8\ub2e4. At this stage, the previously compiled sector2.o<\/code> and kernel.o<\/code> are linked to generate the sector2.bin<\/code> file, with the text section aligned to address 0x8000.<\/p>\n\n\n\n
— text \uc139\uc158\uc740 sector2.bin\uc0dd\uc131\uc2dc -Ttext 0x8000 \uc774\ubd80\ubd84\uc5d0\uc11c text\ub85c \uc139\uc158 \ub124\uc784\uc744 \uc9c0\uc815\ud588\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. The ‘text’ section is named as such because ‘text’ was specified as the section name using -Ttext 0x8000<\/code> when generating sector2.bin<\/code>.<\/p>\n\n\n\n
section .text ; ELF \ud3ec\ub9f7 \ucef4\ud30c\uc77c\uc744 \uc704\ud574 \ucf54\ub4dc \uc139\uc158\uc784\uc744 \uba85\uc2dc\ud569\ub2c8\ub2e4.\n ; Specifies that it is a code section for ELF format compilation.\n<\/code><\/pre>\n\n\n\n
— ld\uba85\ub839\uc744 \uc0ac\uc6a9\ud560\ub54c \ub9c1\ucee4\uac00 \uc778\uc2dd\ud558\uac8c \ud558\ub824\uba74 global\ub85c \uc120\uc5b8\ud574\uc11c \uc678\ubd80\uc5d0 \uacf5\uac1c\ud574\uc57c \ud569\ub2c8\ub2e4. To ensure the linker recognizes it when using the ld<\/code> command, you must declare it as global<\/code> to make it externally visible.<\/p>\n\n\n\n
global start ; \ub9c1\ucee4\uac00 \uc778\uc2dd\ud560 \uc218 \uc788\ub3c4\ub85d start \ub808\uc774\ube14\uc744 \uc678\ubd80\uc5d0 \uacf5\uac1c\ud569\ub2c8\ub2e4.\n ; Expose the `start` label so that the linker can recognize it.\nglobal protected_start ; \uba40\ub9ac\ub6f0\uae30 \ubaa9\uc801\uc9c0 \ub808\uc774\ube14\ub3c4 \uc678\ubd80\uc5d0 \uacf5\uac1c\ud569\ub2c8\ub2e4.\n ; We are also making the long-jump destination labels publicly available<\/code><\/pre>\n\n\n\n
— C\uc5b8\uc5b4 \ubcc0\uc218 \ubc0f \ud568\uc218 \ud638\ucd9c\uc744 \uc704\ud55c \uc2a4\ud0dd\uc601\uc5ed\uc744 \uc9c0\uc815\ud569\ub2c8\ub2e4. It designates the stack area for C language variables and function calls.<\/p>\n\n\n\n
mov esp, 0x90000<\/code><\/pre>\n\n\n\n
— C\uc5b8\uc5b4\uc758 kernel_main\ud568\uc218\ub97c \ud638\ucd9c\ud569\ub2c8\ub2e4. It calls the C language’s kernel_main<\/code> function.<\/p>\n\n\n\n
call kernel_main ; \u2705 kernel_main\uc73c\ub85c \uc810\ud504!\n ; Jump to kernel_main!<\/code><\/pre>\n\n\n\n
\u2714\ufe0f kernel.c<\/p>\n\n\n\n
–\uc774 \ucf54\ub4dc\uc5d0\uc11c \uc2e4\uc81c\ub85c \uc0ac\uac01\ud615\uc744 \uadf8\ub9bd\ub2c8\ub2e4. This code actually draws the rectangle.<\/p>\n\n\n\n
typedef unsigned char byte;\n\n\/\/ 1. \uc6d0\ud558\ub294 \uc704\uce58(x, y)\uc5d0 \uc6d0\ud558\ub294 \uc0c9\uc0c1(color)\uc758 \uc810\uc744 \ucc0d\ub294 \ud568\uc218\n\/\/ 1. A function that plots a point of a specified color at a desired location (x, y).\nvoid draw_pixel(int x, int y, byte color) {\n byte *vram = (byte *)0xA0000;\n \/\/ 320x200 \ud574\uc0c1\ub3c4\uc758 1\ucc28\uc6d0 \ubc30\uc5f4 \uc704\uce58 \uacc4\uc0b0: (y * 320) + x\n \/\/ Calculation of 1D array position for 320x200 resolution: (y * 320) + x\n vram[(y * 320) + x] = color;\n}\n\n\/\/ 2. \uc6d0\ud558\ub294 \uc704\uce58, \ud06c\uae30, \uc0c9\uc0c1\uc73c\ub85c \uc0ac\uac01\ud615\uc744 \uadf8\ub9ac\ub294 \ud568\uc218\n\/\/ 2. Function to draw a rectangle at a desired position, size, and color\nvoid draw_rect(int start_x, int start_y, int width, int height, byte color) {\n for (int y = 0; y < height; y++) {\n for (int x = 0; x < width; x++) {\n \/\/ \uc704\uc5d0\uc11c \ub9cc\ub4e0 \uc810 \ucc0d\uae30 \ud568\uc218\ub97c \ud65c\uc6a9\n \/\/ Utilize the point-plotting function created above\n draw_pixel(start_x + x, start_y + y, color);\n }\n }\n}\n\n\/\/ 3. \ucee4\ub110 \uba54\uc778 \ud568\uc218\n\/\/ 3. Kernel main function\nvoid kernel_main(void) {\n \/\/ \uc608\uc2dc 1: X=100, Y=50 \uc704\uce58\uc5d0 \uac00\ub85c 50, \uc138\ub85c 30 \ud06c\uae30\uc758 \uac08\uc0c9(6) \uc0ac\uac01\ud615\n \/\/ Example 1: A brown (6) rectangle with a width of 50 and a height of 30 at position X=100, Y=50\n draw_rect(100, 50, 50, 30, 6);\n\n \/\/ \uc608\uc2dc 2: \ub2e4\ub978 \uc704\uce58\uc5d0 \ud30c\ub780\uc0c9(9) \uc0ac\uac01\ud615 \ucd94\uac00\ub85c \uadf8\ub9ac\uae30 (\uc0c9\uc0c1 \ubcc0\uacbd \ud14c\uc2a4\ud2b8)\n \/\/ Example 2: Draw an additional blue (9) rectangle at a different location (color change test)\n draw_rect(200, 100, 40, 40, 9);\n \n \/\/ \uc608\uc2dc 3: \ub2e4\ub978 \uc704\uce58\uc5d0 \ucd08\ub85d\uc0c9(10) \uc0ac\uac01\ud615 \ucd94\uac00\ub85c \uadf8\ub9ac\uae30\n \/\/ Example 3: Draw an additional green (10) rectangle at a different location.\n draw_rect(30, 120, 60, 20, 10);\n\n \/\/ \uc791\uc5c5 \uc644\ub8cc \ud6c4 CPU \ub300\uae30\n \/\/ Wait for CPU after task completion\n while (1) {\n __asm__ __volatile__(\"hlt\");\n }\n}\n<\/code><\/pre>\n\n\n\n
# 1. 1\ubc88 \uc139\ud130 \ubd80\ud2b8\ub85c\ub354 \ucef4\ud30c\uc77c\n# Compile Sector 1 Bootloader\n\nnasm -f bin boot.asm -o boot.bin\n\n# 2. 2\ubc88 \uc139\ud130 \ubcf4\ud638\ubaa8\ub4dc \uc9c4\uc785\ubd80 \ucef4\ud30c\uc77c\n# Compiling the Sector 2 protection mode entry section\n\nnasm -f elf32 sector2.asm -o sector2.o\n\n# 3. GCC \ucef4\ud30c\uc77c \uc2dc \uc704\uce58 \ub3c5\ub9bd\uc801 \ucf54\ub4dc(PIC)\ub97c \uc0dd\uc131\ud558\uc9c0 \uc54a\ub3c4\ub85d \uc635\uc158 \ucd94\uac00\n# Add an option to prevent the generation of position-independent code (PIC) when compiling with GCC.\n\ngcc -m32 -c kernel.c -o kernel.o -nostdlib -fno-builtin -fno-stack-protector -fno-pic -fno-PIE\n\n# 4. \ub9c1\ucee4(ld)\uc5d0\uac8c \ucf54\ub4dc\uc758 \uc2dc\uc791\uc810(Entry)\uc774 '_start'\uac00 \uc544\ub2c8\ub77c 'start' \uc784\uc744 \uba85\uc2dc\n# Specify to the linker (ld) that the code entry point is 'start' instead of '_start'\n\nld -m elf_i386 -Ttext 0x8000 -e start -o sector2.bin sector2.o kernel.o --oformat binary\n\n# 5. \uae30\uc874 \ubc29\uc2dd\ub300\ub85c \ub514\uc2a4\ud06c \uc774\ubbf8\uc9c0 \ubcd1\ud569 \ubc0f QEMU \uc2e4\ud589\n# # 5. Merging Disk Images and Running QEMU Using the Existing Method\n\ncat boot.bin sector2.bin > temp.bin\ndd if=temp.bin of=os.img bs=512 count=2880 conv=sync\nqemu-system-x86_64 -drive file=os.img,format=raw,if=floppy -boot a\n<\/code><\/pre>\n\n\n\n<\/figure>\n","protected":false},"excerpt":{"rendered":"
\ud83d\udc49\ufe0f 32\ube44\ud2b8 \ubcf4\ud638\ubaa8\ub4dc(\uadf8\ub798\ud53d\ubaa8\ub4dc)\uc5d0\uc11c \ud654\uba74\uc5d0 \uc0ac\uac01\ud615\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ucf54\ub4dc\uc785\ub2c8\ub2e4.This is code that displays a rectangle on the screen in 32-bit protected mode (graphics mode). \ud83d\udc49\ud83c\udffb \uc774\uc804 miniOS-7\uc5d0\uc11c \ucf54\ub4dc\uc5d0\uc11c \ubc14\ub010 \ubd80\ubd84\ub9cc \uc124\uba85\ud569\ub2c8\ub2e4.This section explains only the changes made to the code from the previous miniOS-7. \ud83d\udc49\ud83c\udffb \ucf54\ub4dc \/ Code \u2714\ufe0f boot.asm — boot.asm\uc5d0\uc11c 2\ubc88 \uc139\ud130 \ucf54\ub4dc\ub97c 1\uc5d0\uc11c 10\uc73c\ub85c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,1],"tags":[],"class_list":["post-6113","post","type-post","status-publish","format-standard","hentry","category-os","category-uncategorized","missing-thumbnail"],"_links":{"self":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/6113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=6113"}],"version-history":[{"count":6,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/6113\/revisions"}],"predecessor-version":[{"id":6120,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/6113\/revisions\/6120"}],"wp:attachment":[{"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=6113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=6113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.freelifemakers.org\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=6113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/www.freelifemakers.org\/wordpress\/wp-content\/uploads\/2026\/07\/miniOS-8.jpg\")
<\/figure>\n","protected":false},"excerpt":{"rendered":"