Programming an LPC2148 in OSX

Right now I'm using HyperLoad to program an LPC2148(http://www.kynix.com/uploadfiles/pdf2286/LPC2148FBD64.pdf) through USB. HyperLoad is a windows program and I have a Mac so I have to open up a Windows virtual machine to use it. Is there a way to program it in OSX? I found a program called lps21isp, but I don't know how to use it. Also, don't I need a special driver for OSX so that it can communicate with the ARM7?
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