What does TSOP stand for?

[vmehta211]

I was reading through some posts and was wondering what the term TSOP stood for? I think it might stand for the stock XBOX bios... If it does, how could I flash it? Also, what size is the stock xbox bios and how much memory does the chip have?

I already have a cheapmod with the X2 4977 installed in my box but I am wondering if I could flash the original XBOX bios chip and create a multiboot with linux or somehthing. I was planning on switching between the two using an external switch with D0.

If I am unable to flash the stock xbox bios is there any other way to create a multibios system with my existing hardware. I have another cheapmod chip, can I combine the two?