Intel 80C188XL - Manual (Page 268)

10-13
DIRECT MEMORY ACCESS UNIT
Figure 10-9. DMA Destination Pointer (High-Order Bits)
Register Name: DMA Destination Address Pointer (High)
Register Mnemonic: DxDSTH
Register Function: Contains the upper 4 bits of the DMA
Destination pointer.
Bit
Mnemonic
Bit Name
Reset
State
Function
DDA19:16 DMA
Destination
Address XXXXH DDA19:16 are driven on A19:16 during the
deposit phase of a DMA transfer.
NOTE: Reserved register bits are shown with gray shading. Reserved bits must be written
to a logic zero to ensure compatibility with future Intel products.
15 0
D
D
A
1
7
D
D
A
1
8
D
D
A
1
9
D
D
A
1
6
A1178-0A