Changes

8253 chip

No change in size, 18:18, 22 February 2010

/* Control Registers */

7-6 Counter Number (0..2=Counter 0..2, 3=Reserved)

5-4 Read/Load (0=Latching?, 1=~~MSB~~ LSB only, 2=~~LSB~~ MSB only, 3=LSB-then-MSB)

3-1 Mode

0=Interrupt on Terminal Count

6,388

edits