Format of PCI Configuration data for PC Technology RZ-1000 EIDE controller:
Offset Size Description )
00h 64 BYTEs header (see #00878)
(vendor ID 1042h, device ID 1000h)
10h DWORD base address for controller I/O registers
(set to 01F1h for primary controller, 0171h for secondary)
14h DWORD base address for controller digital I/O port
(set to 03F5h for primary, 0375h for secondary)
40h DWORD ???
bits 7-1: ???
bit 13: read-ahead mode enabled
(Read-Ahead is buggy on original RZ-1000, and is
thus typically disabled by clearing this bit)
bit 16: ???
44h DWORD ???
48h 8 BYTEs ???
50h 176 BYTEs unused???