English Amiga Board - Blitz Basic CustomCop command

Hm, i've never used the CustomCop cmd myself; the more useful one is CustomString.
There are some docs on BUM6 about that, the example below is a modified src from BUM6:

Code:

 NEWTYPE .mycop

    size.l            ;0 = not initialised

    coppos.l          ;location in chipmem

    colors.l

    sprites.l

    bpcons.l

    bplanes.l

    dot.l

    customs.l

    dob.l

    numbp.w:colpokes.w                  ;limits

    fetchwid.w:xand:xshift              ;for show calculations (3 words)

    ypos.w:height:res

    numsprites.w:numcols:numcustoms

    aga.w                               ;24bit=$8000 fetch = $00,$10,$20,$30

    resshift.w                          ;lo,hi,shi = 2 1 0

    setup.w                             ;lines taken for setup

    cblow.w                             ;if custom goes below 256

    sfetch.w:spres:spif:spwid:sspwid    ;sprite mode for display

 End NEWTYPE



 DEFTYPE.l



 BitMap0,320,256,5



 LoadBitMap0,"face8.iff",0



 InitCopList1,44,256,3,8,8,$FF



 VWait50



 BLITZ



 CreateDisplay1







Statement mirror {coplst.w,ypos.w}

    *myc.mycop=Addr CopList(coplst)

    #BPLMOD1=$108

    #BPLMOD2=$10A

    co$=Mki$(#BPLMOD1)+Mki$(-79)

    co$+Mki$(#BPLMOD2)+Mki$(-79)

    CustomString 1,SizeOf.mycop\customs,ypos,co$

End Statement





 DisplayBitMap1,0

 DisplayPalette1,0



 sypos=120:x.q=0                          ;testing `MIRROR'



 While Joyb(0)=0

    VWait

    x=QWrap(x+1,0,64):mirror {1,Sin(x/10)*6+sypos}

 Wend

 End



 NoCli:CloseEd

Maybe this helps?