16-bit

What is an efficient and clear way to read 16-bit PGM images in Python with numpy? I cannot use PIL to load 16-bit PGM images due to a PIL bug . I can read in the header with the following code: dt = np.dtype([('type', 'a2'), ('space_0', 'a1', ), ('x', 'a3', ), ('space_1', 'a1', ), ('y', 'a3', ), ('space_2', 'a1', ), ('maxval', 'a5')]) header = np.fromfile( 'img.pgm', dtype=dt ) print header This prints the correct data: ('P5', ' ', '640', ' ', '480', ' ', '65535') But I have a feeling that is not quite the best way. And beyond that, I'm having trouble how to figure out how to read in the

When I add two values in 16 bit assembly, what is the best way to print the result to console? At the moment I have this code: ;;---CODE START---;; mov ax, 1 ;put 1 into ax add ax, 2 ; add 2 to ax current value mov ah,2 ; 2 is the function number of output char in the DOS Services. mov dl, ax ; DL takes the value. int 21h ; calls DOS Services mov ah,4Ch ; 4Ch is the function number for exit program in DOS Services. int 21h ; function 4Ch doesn't care about anything in the registers. ;;---CODE END---;; I think that dl value should be in ASCII code, but I'm not sure how to convert ax value after

For example, with a boot sector that BIOS prints a to the screen main.asm : org 0x7c00 bits 16 cli mov ax, 0x0E61 int 0x10 hlt times 510 - ($-$$) db 0 dw 0xaa55 Then: nasm -o main.img main.asm qemu-system-i386 -hda main.img -S -s & gdb -ex 'target remote localhost:1234' \ -ex 'break *0x7c00' \ -ex 'continue' \ -ex 'x/3i $pc' I get: 0x7c00: cli 0x7c01: mov $0x10cd0e61,%eax 0x7c06: hlt So it looks like the mov ax, 0x0E61 was interpreted as a 32-bit mov %eax and ate up the next instruction int 0x10 as data. How can I tell GDB that this is 16-bit code? See also: in 2007 a GDB dev replied "use