Configuration Space Status Register

bit 15 = Detected Parity Error

bit 14 = Signaled System Error

bit 13 = Received Master Abort

bit 12 = Received Target Abort

bit 11 = Signaled Target Abort

bits 10:9 = DEVSEL Timing (00=fast, 01=medium, 10=slow)

bit 8 = Master Data Parity Error

bit 7 = Fast Back-to-Back Capable

bit 6 = Reserved

bit 5 = 66 MHz Capable

bit 4 = Capabilities List

bit 3 = Interrupt Status

bits 2:0 = Reserved