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Changes - CPCWiki
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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
Nocash
6,388
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