how do you make something similar to old computer game sounds/arps

Like the old blips and bleeps? I wouldn't mind a quick way of doing this either actually.

Actually, the "old computer" sounds are the simplest... All you need is a raw classic waveform (square, sawtooth, triangle or sine) and use simple modulations on them, as old computers used mostly pitch (vibrato) and volume changes. The arpeggiator is probably useful for the trill-chords, where you play a chord one note at a time (ascending/descending arpeggio), but really REALLY quickly.
My most favorite computer-sound-emulation patch, that came with the Virus is the Atari explosion - AtariCr@sh. Support people, if you happen to read this please tell Matt Picone, that every time I feel bad I load this sound, play with it and feel better.

Zitat von flabberbob

Actually, the "old computer" sounds are the simplest... All you need is a raw classic waveform (square, sawtooth, triangle or sine) and use simple modulations on them, as old computers used mostly pitch (vibrato) and volume changes.

This

Try using an LFO set to Sample & Hold for pitch, pan & filter cutoff modulations at a speed of 1/8 or 1/16

There are many ways
start with simple oscillator like sine and try to animate your sound in matrix section and select different parameters and value like lfo,rate,fxs, and ....
also take a look on virus boot camp page there are many useful video.