Jumper to Enable.

Open to Disable.

W3,W4,W5: Reserved

W6: Floppy Drive Controller.

Jumper to Enable.

Open to Disable.

W7: BIOS Address Selection
Pins	C000	C200	C400	C600	C800	CA00	CC00	CE00
1/2	ON	ON	ON	ON	ON	ON	ON	ON
3/4	ON	ON	ON	ON	OFF	OFF	OFF	OFF
5/6	ON	ON	OFF	OFF	ON	ON	OFF	OFF
7/8	ON	OFF	ON	OFF	ON	OFF	ON	OFF
Pins	D000	D200	D400	D600	D800	DA00	DC00	DE00
1/2	OFF	OFF	OFF	OFF	OFF	OFF	OFF	OFF
3/4	ON	ON	ON	ON	OFF	OFF	OFF	OFF
5/6	ON	ON	OFF	OFF	ON	ON	OFF	OFF
7/8	ON	OFF	ON	OFF	ON	OFF	ON	OFF

Default is D800

Memory Size & Switch Settings (2030 Main Board)
Mem.	U1	U2	U3	U4	SW1	SW2	SW3	SW4
512K	--	--	256K	256K	X	ON	ON	X
1.0M	256K	256K	256K	256K	X	ON	ON	X
2.0M	--	--	1.0M	1.0M	X	ON	OFF	X
2.5M	256K	256K	1.0M	1.0M	X	ON	OFF	X
2.5M	1.0M	1.0M	256K	256K	X	OFF	OFF	X
4.0M	1.0M	1.0M	1.0M	1.0M	X	OFF	ON	X

X: Don't care.
SW4: Reserved
SW1: Used in conjunction with DC-2010 Memory Expansion Daughterboard.

Note: The DC-2030, and DC-2010 require 80ns or faster SIMMs, with or without Parity. Only 256KB or 1.0MB SIMMs will work, and you must fill a full bank (2 SIMMs) at a time. While the DC-2030 will allow mixed sizes of SIMMs, the DC-2010 expansion board must be populated with either 256KB or 1.0MB SIMMs. You must have a minimum of 512KB cache installed to use the controller!

SW1: Memory Size Selection

On to select 256KB SIMMs.

Off to select 1.0MB SIMMs.

Memory Sizes & Positions (2010 Expansion Board)
Mem.	U16/17	U18/19	U20/21	U22/23	U24/25	U26/27
512K	256K	--	--	--	--	--
1.0M	256K	256K	--	--	--	--
1.5M	256K	256K	256K	--	--	--
2.0M	256K	256K	256K	256K	--	--
2.5M	256K	256K	256K	256K	256K	--
3.0M	256K	256K	256K	256K	256K	256K
2.0M	1.0M	--	--	--	--	--
4.0M	1.0M	1.0M	--	--	--	--
6.0M	1.0M	1.0M	1.0M	--	--	--
8.0M	1.0M	1.0M	1.0M	1.0M	--	--
10.0M	1.0M	1.0M	1.0M	1.0M	1.0M	--
12.0M	1.0M	1.0M	1.0M	1.0M	1.0M	1.0M

Additional note: You must fill the Main Board before adding memory to the Daughterboard.