if you want to use anyway COS / SIN in assembler do this
you don't needs the ACTUAL COS / SIN code
use BASIC to generate cos/sin values, output the value table to a file, then include all values to your asm code as data
if you want to handle those values as pure integer in the assembler, multiply the result by 512 (for a precision compatible with 360 degrees). Or you can go for a full 16bits precision, ranging it from -32768 to 32767, so as it is full 16bits, you can multiply it by any other 16bits value and get the high word as the integer result, and the lower word as the fraction result. Remember that 16 bit x 16bit = 32bits result.
