> Well time to go study the bus behaviors and compare them then. How > does gsc behave wrt cache coherency, read-around-write, write ordering > etc etc. And ISA is noticable for the fact it doesnt behave quite like PCI. You use readb/readw/readl on ISA. > Using writeb on a gsc is misleading everybody else who reads the code > into believing that it's a PCI device. Rubbish. Alan