CHOCOLATE CHIFFON CAKE

1 1/2 c. graham cracker crumbs 1/3 c. Hershey's cocoa. 1/3 c. sugar 1/3 c. margarine, melted. 3 pkgs 8 oz cream cheese softened 1 can Eagle Brand. 2 t. vanilla extract 3 eggs. 1 c. Hershey's mini-chips (semi- 1 t. plain flour. sweet chocolate, divided) Heat oven to 300. ................
................