Technical data

Block Diagram
A-6
Diskette Controller
The SMC 37C935APM has an integrated diskette controller capable of supporting
two diskette drives interfacing to the main logic board through a daisy-chained ribbon
cable. Data transfer rates for a 3.5 inch diskette drive include 720 KB, 1.44 MB, and
2.88 MB. Data transfer rates for a 5.25 inch diskette drive include 360 KB and 1.2
MB.
Keyboard/Mouse Controller
The SMC 37C935APM also has an integrated keyboard/mouse controller
programmed to be IBM PC/AT compatible. The controller can drive DECpc
supported keyboards and a PS/2-type mouse. The keyboard and mouse ports are
both 6-pin mini-DIN, PS/2 type connectors. The table below lists both the keyboard
interface pin assignments and the mouse interface pin assignments.