DC-300B, DC-800B Hard Disk/Floppy Controller Settings and Configuration

Data bus:	16-bit ISA
Size:	Half-length, full-height card
Hard drive supported:	Up to seven SCSI devices
Floppy drives supported:	Two 360KB, 720KB, 1.2MB, or 1.44MB

CONNECTIONS
Function	Location
50-pin SCSI-2 connector - external	CN1
50-pin SCSI connector - internal	CN2
34-pin cable connector - floppy drive	CN3
4-pin connector - drive active LED	JP1
4-pin connector - speaker	JP2

USER CONFIGURABLE SETTINGS
Function		Location	Setting
»	Floppy drive enabled	JP3/jumper 1	closed
	Floppy drive disabled	JP3/jumper 1	open

BASE I/O ADDRESS
Address		JP3/jumper 2	JP3/jumper 3	JP3/jumper 4
»	330h	closed	closed	closed
	130h	open	open	closed
	134h	open	open	open
	230h	open	closed	closed
	234h	open	closed	open
	334h	closed	open	closed

CACHE DRAM CONFIGURATION (FOR DC-800B ONLY)
Size	Bank 0	Bank 1
512KB	(2) 256K x 9	NONE
1MB	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	NONE
2.5MB	(2) 1MB x 9	(2) 256K x 9
4MB	(2) 1MB x 9	(2) 1MB x 9
8MB	(2) 4MB x 9	NONE
8.5MB	(2) 4MB x 9	(2) 256K x 9
10MB	(2) 4MB x 9	(2) 1MB x 9
16MB	(2) 4MB x 9	(2) 4MB x 9
Note: Bank 0 must be installed. SIMM’s must be the same size in the same bank and can be mixed in any combination not exceeding 16MB.

MISCELLANEOUS TECHNICAL NOTES

The only difference between DC-300B & DC-800B is the Cache DRAM capability in DC-800B. Remove terminators only when both internal & external devices are connected to this adapter.