VGA_COLOR_BASE
VGA_MEM_ADDR + VGA_COLOR_BASE;
VGA_MEM_ADDR + VGA_COLOR_BASE;
vgatext = (uint16_t *)PTOV(VGA_MEM_ADDR + VGA_COLOR_BASE);
#define VGA_SCREEN ((uint16_t *)(VGA_MEM_ADDR + VGA_COLOR_BASE))
vga->text_base = (caddr_t)vga->fb.addr + VGA_COLOR_BASE;