ABS was offered only on the wagons and V6 Camrys of the 2nd generation. In 1990 the Canadian market was offered ABS for the first time, while (as far as I've been told) it was not an option on US cars until 1991. So if your Camry is a 4-cylinder, non-wagon, you probably don't have ABS.
If you DO have ABS, you will definitely know it. With the hood open, look in front of the passenger-side wheel well. There will be a monstrous-looking device with hydraulic brake lines running out from it in all directions. This is the primitive ABS.
This is what it looks like on my Camry:
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1990 5spd V6 Camry (Still kicking at 393,000km) 1991 Celica GTS -- Pappa needs a 3SGTE...and AWD for all this friggin' snow
Honda my A$$, you just can't kill a Yota...