This was the replacement for the DC-1 controller board. It corrected a few errors (such as the 100pfd capacitor on Write Data line) and changed the data buffers from the DM8835 to the 74LS242.
Introduced by Southwest Technical Products Corporation in 197?.
DC-2 Controller Board (66K JPG)
DC-2 Controller Board Photo High Resolution (222K JPG)
MF68 Assembly Instructions (1.2 MB PDF)
DC-2 Schematic (270K PDF 11x17)
Wiring Diagram (293K PDF)
P200 Power Supply Schematic (170K PDF)
Michael Holley's SWTPC Collection Home Page