TITLE   "mp4test1.a by Douglas Jones, Oct 26, 2014"

;       main program to test MP4, passing it a display area

;       this particular version of the test program
;       is minimal, it cheats by passing video ram directly
;       to mp4 as the display area -- as a result, execution
;       of code for mp3 and mp4 with this test program should
;       give identical results.  This test program is not
;       the official test, however, but it should be useful
;       for debugging

        USE     "hawk.h"
        USE     "monitor.h"

        INT     MAIN
        S       MAIN

        EXT     FILL    ; subroutine to solve mp4

VIDEORAM=       #FF000100

; activation record for main
;RETAD  =       0
ARSIZE  =       4

MAIN:   ; given: R3 = w
        ;        R4 = h
        STORES  R1,R2

        MOVE    R5,R4           ; -- parameter 3, h
        MOVE    R4,R3           ; -- parameter 2, w
        LIW     R3,VIDEORAM     ; -- parameter 1, array
        ADDI    R2,R2,ARSIZE
        LIL     R1,FILL
        JSRS    R1,R1           ; fill( b, w, h )
        ADDI    R2,R2,-ARSIZE

        LOADS   R1,R2
        JUMPS   R1              ; return
        END