Changes

Schneiderware V/24 Interface

26 bytes added, 07:19, 29 August 2014
* [[Media:8253.pdf|8253 Datasheet]] - 8253 Timer Datasheet (slower clock, write-only control registers)
* [[Media:8254.pdf|8254 Datasheet]] - 8254 Timer Datasheet (faster clock, read/write-able control registers, otherwise compatible with 8253)
 
[[Category:Peripherals]]