Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
12-40
12.3.9 Mode 2 Register (DMAMOD2)
Use DMAMOD2 to select the data transfer bus cycle option, specify whether the re quester an d
target are in memory or I/O, and determine whether the DM A modifies the target and requester
addresses. If you set up the DMA to modify the requester address, use DMAMOD2 to de termine
whether the DMA increments or decrements the requeste r address during a buffer transfer.