15 January 2004 (Revised 16 January 2004) Fixing scroll_up In my previous entry, I found a bug in my scrolling routine (scroll_up, introduced in "Hex dump, part 1"). I entered the wrong number of lines to scroll in my call to INT 10h, AH=06h. This code: scroll_up: mov bh, 7 xor cx, cx mov dx, (24*0x100) + 79 mov ax, (0x0600 + 23) int 0x10 ret — should look like this: scroll_up: mov bh, 7 xor cx, cx mov dx, (24*0x100) + 79 mov ax, (0x0600 + 1) ; pass 1 in AL int 0x10 ret Sorry about that. Here's the corrected version of the code for my previous entry. Check the index for other entries. |
