I would be keen to buy your COS221 and COS261 books.
current prices are COS221 R379.95 and COS261 R787-95
They would need to be correct editions though.
COS221
William Stallings. Computer Organization & Architecture, Seventh edition. Pearson Education,
New Jersey, 2006.
COS261
Barwise, J. & J. Etchemendy.
1999, 2000, 2002, 2003. Language, proof and logic. Stanford:
Center for the Study of Language and Information.
Unfortunately, I am in Pietermaritzburg, so if we can somehow make a plan?
Shaun