TC1711 Hard Disk/Floppy Controller Settings and Configuration

Data Bus:	16-bit ISA
Size:	Mid-length, full-height card
Hard drives supported:	2 ST506/412 (MFM) drives
Floppy drives supported:	Two 360KB, 720KB, 1.2MB, or 1.44MB drives

CONNECTIONS
Function	Location
34-pin control cable hard drive	CN1
20-pin data connector for hard disk 0	CN2
20-pin data connector for hard disk 1	CN3
34-pin data cable connector-floppy drive	CN4
4-pin connector-drive active LED	CN5

FACTORY SETTINGS
Function		W1	W2	W3	W4
»	2KB RAM buffer (Hard wired no jumper)	1 & 2	1 & 2	1 & 2	1 & 2
	32KB RAM buffer (Requires firmware)	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated are in the closed position.

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Hard drive enabled	W5	Pins 2 & 3 closed
	Hard drive disabled	W5	Pins 1 & 2 closed
»	Floppy precompensation auto set by data rate.	W6	Pins 2 & 3 closed
	Floppy precompensation fixed at 125ns	W6	Pins 1 & 2 closed
»	Floppy drive single speed select	W7	Pins 2 & 3 closed
	Floppy drive dual speed select	W7	Pins 1 & 2 closed

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Floppy port address 1F0h-1F7h, 3F0h-3F7h	W8	Open
	Floppy port address 170h-17Fh, 370h-37Fh	W8	Closed
»	Hard disk port address 3F0h-3FFh	W11	Open
	Hard disk port address 370h-37Fh	W11	Closed

FLOPPY DRIVE CONFIGURATION
Function		W9	W10
»	Floppy drive enabled	Closed	Closed
	Floppy drive disabled	Open	Open