For speculation purposes, 640x480 does work, and I'm very glad to see this question here instead of on the buglist. You'll find that FRACTINT is worth an ego trip for saturating your CPU for five minutes at low resolution, nevermind the hours you can spend gloating over a modern computer that you've managed to feed over a quarter million indefinite questions to. While I can't tell you much about version 18.6 for Windows and the XFractint version for Linux that would operate at the resolution of XWindows, you've got this one working, so I wouldn't sweat it until you know which version you might want to play with...or whether you might want to shop around for (or download) VESA compliance to plug into your machine. Waffle { ; Very productive for icons. Ex-president Clinton ; must be in this equation. Interchangeable with funk_r_not. z=fn1(pixel), clear=fn2(pixel), set=fn3(pixel), flop=1: c=clear if(flop==-1) c=set endif, flop=-flop z = sqr(z) +c, LastSqr <=real(P1) } Kwodrongl { ; 20.27s/megapixel@350Mhz. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/zero/abs passes=t center-mag=-1.33227e-015/2.22045e-016/1.263/0.8752 params=4/0 float=y maxiter=255 inside=0 outside=atan invert=0.5597347986818/0/0 symmetry=xyaxis periodicity=0 colors=@altern.map } Vektor { ; 32.35s/megapixel@350Mhz. ; grayhack is -altern.map with first colour black. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/atan/atanh center-mag=-0.941635/0/0.46/0.8407 params=16/0 float=y maxiter=255 inside=0 outside=atan invert=1.37582076541427/-0.25/0 symmetry=xaxis periodicity=0 colors=@altern.map } Bowser { ; 32.62s/megapixel@350Mhz. ; It's not the species of stunning beauty called ; a Mountain Lion that moved into Elk Island ; national park recently, but it's decent. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=exp/atan/atanh center-mag=-0.467145/0/0.767/1.111 params=64/0 float=y maxiter=255 inside=0 outside=atan invert=0.467996152338943/-0.333333333333/0 symmetry=xaxis periodicity=0 colors=@altern.map } Guuglufagus { ; Total mess for relief. 1:07.07/megapixel@350Mhz. ; Higher bailouts will increase wrinkles. reset=2003 type=lambda(fn||fn) function=recip/exp center-mag=-0.294592/-0.296513/0.09228216/1.3722 params=-0.5/0.5/1 float=y maxiter=255 bailout=37 inside=0 outside=atan invert=2.8079376810782e-005/-0.072132107189747/-0.0929080805175205 symmetry=none periodicity=0 colors=@altern.map } GobletOfBenwaw { ; 1:10.08/megapixel@350Mhz. ; FRACTINT will "calculate" the aspect ; ratio of .75 to put in this parameter file ; if you save it again. It's one. colors=@diag.map reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/ident/sqrt passes=t center-mag=-2.30776/0/0.5289784/0.659 params=4/0 float=y maxiter=255 inside=0 outside=tdis invert=0.6570112296359/-0.25/0 symmetry=xaxis periodicity=0 colors=000zzz<3>LzzBzz0zz<3>0__0TT0MM0FF088<3>0NZ0Re0Vl0Zs0bz<3>RlzYoz\ dqzktzrwz<3>SazLWzERz7Lz0Fy<3>09Z07T06M04F028<3>41Z51e61l71s80z<3>WRza\ Yzgdzmkzsrz<3>fSycLy`EyY7yU0x<3>H0ZE0SB0M80F408<3>S0YY0dc0ji0qp0x<3>tR\ xuYxvdxwkxxry<3>xSqxLoxEmx7kw0h<3>U0NN0HF0C806806<3>Y0Ec0Gj0Ip0Kw0M<3>\ xVexbjyjoyrtyrt<3>xSTxLMwEFw78v00<3>U00N00F00800800<3>XA0bC0iF0oH0vK0<\ 3>xdVxibyojytrytr<3>wmSwkLviEvg7ue0<3>TL0MG0FB0860860<3>UW0Za0dh0in0ou\ 0<3>twVuxbwxjxyrxyr<3>iwSevLavEYu7Ut0<3>FT0CM08F0480480<3>6W06a07g07m0\ 8s0<3>ZvVewblxjsyrsyr<3>SvYLvTEuN7tI0sC<3>0S60L50E3072072<3>0VH0`L0fP0\ lT0rX<6>ryvryv } Cancer { ; 51.24s/megapixel@350Mhz. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/recip/conj passes=t center-mag=0.970492/0/0.05868219/0.7229 params=16/0 float=y maxiter=255 inside=0 outside=atan invert=0.621604712054051/-1.15/0 symmetry=xaxis periodicity=0 colors=@altern.map } FunKlub { ; 33.84s/megapixel@350Mhz. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/sqr/sqrt passes=t center-mag=-0.210411/0/1.25/1.34 params=4/0 float=y maxiter=255 inside=0 outside=atan invert=0.3671085141903/-0.25/0 symmetry=xaxis periodicity=0 colors=@altern.map } FunkSpade { ; 49.54s/megapixel@350Mhz. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/recip/ident center-mag=5.30944/0/0.01633668/2.0059 params=8/0 float=y maxiter=255 inside=0 outside=atan invert=0.7284382284382/-0.73/0 symmetry=xaxis periodicity=0 colors=@altern.map } FunkHeart { ; 42.02s/megapixel@350Mhz. reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=exp/sqrt/sqr center-mag=-0.98638/0/0.5782385/1..7489 params=4/0 float=y maxiter=255 fillcolor=0 inside=0 outside=atan invert=0.5/-0.75/0 symmetry=xaxis periodicity=0 colors=@altern.map } FunkDiamond { ; 27.9s/megapixel@350Mhz. ; Look Ma. Four Suits. One Formula. ; (Three sides is actually a better representation ; of tetrahedral carbon crystals in 2D.) reset=2003 type=formula formulafile=waffle.par formulaname=waffle function=zero/flip/zero passes=t center-mag=0/0.254029/0.9553083/1.2434 params=4/0 float=y maxiter=255 inside=0 outside=atan invert=0.609875904495143/0/0 symmetry=yaxis periodicity=0 colors=@altern.map } Default { ; 35.93s/megapixel@350Mhz. I tried ; putting evolver parameters here. reset=2003 type=formula formulafile=waffle.par formulaname=Waffle function=zero/ident/recip passes=t params=4/0 fillcolor=255 inside=255 periodicity=-3 }