Learning 68K Assembler

[Piru]

@ollygd

Plus, is the Motorola CPU emulated perfectly in WinUAE?

For most parts yes. There are some things that are not 100% but you'll probably never run into them.

Can I practice in WinUAE?

Yes.

Code: [Select]



_LVOOpenLibrary equ -552
_LVOCloseLibrary equ -414
_LVOOutput equ -60
_LVOWrite equ -48

Main:
    move.l (4).w,a6
    lea    (dosname,pc),a1
    moveq  #0,d0
    jsr    (_LVOOpenLibrary,a6)
    move.l d0,d7
    beq.b  .exit
    move.l d7,a6

    jsr    (_LVOOutput,a6)
    move.l d0,d1
    lea    (msg,pc),a0
    move.l a0,d2
    moveq  #-1,d3
.loop:
    addq.l #1,d3
    tst.b  (a0)+
    bne.b .loop
    jsr    (_LVOWrite,a6)

    move.l d7,a1
    move.l (4).w,a6
    jsr    (_CloseLibrary,a6)

.exit:
    moveq  #0,d0
    rts

dosname:
    dc.b   "dos.library",0
msg:
    dc.b   "Good luck with your studies!",10,0