sigh. i dont know

src/scripts/bmp2font.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+FILE* in;
+FILE* out;
+void *addr;
+
+void copyline(int c) {
+  uint8_t *ptr = addr + 0x82 + (128/8)*(127 - c);
+  int i;
+  for (i=0; i<16; i++) {
+    fputc(*ptr++, out);
+  }
+}
+
+int main(int argc, char** argv) {
+  struct stat sbuf;
+
+  in = fopen(argv[1], "r+");
+  out = fopen(argv[2], "w");
+
+  fstat(fileno(in), &sbuf);
+
+  if (sbuf.st_size != 2178) {
+    printf("File must be a 128x128 pixel 1 bit monochrome bmp\n");
+    exit(1);
+  }
+
+  addr = mmap(NULL, sbuf.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fileno(in), 0);
+
+  int i, j;
+  for(j=0; j<8; j++) {
+    for(i=0; i<16; i++) {
+      copyline(j+i*8);
+    }
+  }
+}

src/vga11.asm

@@ -0,0 +1,99 @@
+org 0x7C00
+
+cols: equ 80
+rows: equ 30
+
+main:
+  mov ax, cs
+  mov ds, ax
+  mov es, ax
+  mov ss, ax
+  xor sp, sp
+
+  mov ah, 0x42
+  mov si, dap
+  int 0x13
+
+  mov ax, 0x0011
+  int 0x10
+
+  mov di, txtbuf
+.loop:
+  call sync
+  xor ax, ax
+  int 0x16
+  stosb
+  jmp .loop
+
+hlt:
+  hlt
+  jmp hlt
+
+sync:
+  push ax
+  push si
+  push di
+  push es
+  mov si, txtbuf
+  mov ax, 0xA000
+  mov es, ax
+  mov di, 0
+
+  mov bx, font
+  mov cx, rows
+.loop:
+  call charline
+  loop .loop
+
+  pop es
+  pop di
+  pop si
+  pop ax
+  ret
+
+charline:
+  push bx
+  push cx
+  mov cx, 8
+.loop:
+  call scanline
+  call scanline
+  inc bh
+  loop .loop
+  add si, cols
+  pop cx
+  pop bx
+  ret
+
+scanline:
+  push si
+  push cx
+  mov cx, cols
+.loop:
+  lodsb
+  mov bl, al
+  mov al, [bx]
+  stosb
+  loop .loop
+  pop cx
+  pop si
+  ret
+
+dap:
+  db 0x10
+  db 1
+  dw 20
+  dw font, 0
+  dq 1
+
+times (510 - ($-$$)) nop
+
+dw 0xAA55
+
+font:
+  incbin "cp437.bin"
+
+txtbuf:
+  times (rows * cols) db 0
+
+end: