[[Category:Electronic Component]][[Category:Clones]]
The Intel 8237 is a four channel DMA controller (also used in IBM PCs).
== Usage in CPC ==
Used by [[Magic Sound Board]] for [[Aleste 520EX]]:
Port F8D0h..F8DFh - DMA ControllerRegisters 00h..0Fh Clock source (sample rate) for channel 0..3 comes from two [[8253 chip|8254 chips]].
TC triggers NMI.
The 64K address space is broken to four virtual 16K banks, allowing to
0-3 Channel 0..3 Mask Bits (0=Cleared/Enable DREQ, 1=Set/Disable DREQ)
4-7 Not used
== Datasheet ==
* [[Media:8237.pdf]] - DMA Controller 8237 Datasheet