2 ; nasm -f bin -o bootcard.img bootcard.asm
3 ; cat bootcard.img >/dev/<usbstick>
13 data_end equ muscur + 4
20 PIT_CMD_SQWAVE equ 06h
23 %define DIV_ROUND(a, b) ((a) / (b) + ((a) % (b)) / ((b) / 2))
43 mov al, (PIT_CMD_CHAN0 + (%1 << 6)) | PIT_CMD_HILO | PIT_CMD_SQWAVE
46 out PIT_DATA0 + %1, al
48 out PIT_DATA0 + %1, al
58 mov cx, (data_end - data_start) / 2
61 mov word [32], timer_intr
64 settimer 0, DIV_ROUND(OSC_FREQ, 200)
135 .pmus: mov bx, [muscur]
137 mov cx, [music + bx] ; event time
144 mov ax, [music + 2 + bx] ; event counter reload
166 str1: db 'message message blah',0
167 str2: db 'Michael & Athina',0
176 %define TM(x) (40 + (x) * 4)
211 times 446-($-$$) db 0
216 times 510-($-$$) db 0
219 ; vi:ft=nasm ts=8 sts=8 sw=8: