TMC-850M, TMC-850MER, TMC-850MEX, TMC-850RL Hard Disk/Floppy Controller Settings and Configuration

Data bus:	8-bit, ISA
Size:	Half-length, full-height card
Hard drives supported:	Up to seven SCSI devices
Floppy drives supported:	None

CONNECTIONS
Function	Location
25-pin SCSI connector-external	J1
50-pin SCSI connector-internal	J2

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Termination power enabled	W4	closed
	Termination power disabled	W4	open
»	Zero wait state disabled	W5	open
	Zero wait state enabled	W5	closed
»	Interrupt Request is IRQ5	W7	closed (pins 2 & 3)
	Interrupt Request is IRQ3	W6	closed (pins 1 & 2)

BIOS ADDRESS SELECTION
Address		W1	W2	W3
»	CA00h	open	open	pins 1 & 2, 3 & 4 closed
»	C800h	closed	open	pins 1 & 2, 3 & 4 closed
»	CE00h	open	closed	pins 1 & 2, 3 & 4 closed
»	DE00h	closed	closed	pins 1 & 2, 3 & 4 closed
»	E800h	open	open	pins 1 & 3, 2 & 4 closed
»	EC00h	open	closed	pins 1 & 3, 2 & 4 closed

MISCELLENAUS TECHNICAL NOTES

In some version there is an extra terminating resistor and jumper W4 does not exist.