PORTWALLY SOFTWARE · FOR THE APPLE IIgs← ALL APPS

Demos for the
Apple IIgs.

Sit back and let your Apple IIgs show off. Put the disk in, switch on, watch.

FILLHARMONIC

Six parts. Ten voices. One disk.

Copper bars, a lit cube, glenz vectors, plasma, an icosahedron and a twister, all in Super Hi-Res fill mode, to an original ten-voice tune.

CLIP AND BOOT
FILLHARMONIC.po · 1 MB or more
ORIGINS

13.8 billion years in 3 1/2 minutes.

The Big Bang, the first stars, the Milky Way, the birth of the Earth and the Moon, and finally 1986: the Apple IIgs.

CLIP AND BOOT
ORIGINS.po · 1 MB or more
VOYAGE

From the Earth to the edge of the universe.

Past every planet, out of the solar system, faster than light out of the Milky Way, and on to the edge of the observable universe.

CLIP AND BOOT
VOYAGE.po · 1 MB or more
PORTUGAL

Lisboa to Moledo, 350 km, one sunset.

From space down to Lisboa, along the Atlantic coast to Porto, then to the village of Moledo to watch the sun go down. With a fado-flavoured soundtrack.

CLIP AND BOOT
PORTUGAL.po · 1 MB or more
INWARD

Sixteen powers of ten in one zoom.

From 10 metres above the beach at Moledo into a hand, its skin, a cell, the DNA, a carbon atom and its nucleus, down to the quarks inside a proton. Then all the way back out.

CLIP AND BOOT
INWARD.po · 1 MB or more
QUATRO ESTAÇÕES

Seven places, one whole year.

A year in the Minho, one day in each place: a vineyard valley, Ponte de Lima, Viana do Castelo, Valença, Guimarães, Bom Jesus in Braga and Lindoso. Spring blossom, summer light, the harvest and winter snow; days and nights pass, with music that changes with the seasons.

CLIP AND BOOT
ESTACOES.po · 1 MB or more
OUTWARD

From a hand to the edge of the universe.

The other half of INWARD: from a hand on the beach at Moledo out past the Earth, the planets, the stars and the Milky Way to the edge of the observable universe, ten times farther every few seconds.

CLIP AND BOOT
OUTWARD.po · 1 MB or more
ECLIPSE

Stars at 10:46 in the morning.

The total eclipse of 2 August 2027: the Moon slides into line, its shadow crosses the Atlantic, Tarifa goes dark for 4 minutes 39 seconds under the corona, and the shadow races on to Luxor.

CLIP AND BOOT
ECLIPSE.po · 1 MB or more
TERRAMOTO 1755

9:40 on All Saints' Day.

The great Lisbon earthquake of 1 November 1755: the sea floor breaks off Cape St. Vincent, the city on its hills shakes and its churches fall, the river draws back, three waves flood and wreck the lower town, and fires burn it into the night. Then the new Baixa rises on its grid, and the Praça do Comércio today.

CLIP AND BOOT
TERRAMOTO.po · 1 MB or more
Boot the disk. Space = next scene, Esc = quit. No IIgs? Use EmuBuddy. © 2026 Walter Tengler