Bitfields for AMD-645 DMA/Master Memory Access Control 3 register:
Bit(s)	Description	)
 15-12	top of PCI memory for ISA DMA/Master access, bits 23-20, less 1
 11	accesses to E0000h-EFFFFh forwarded to PCI
 10	accesses to A0000h-BFFFFh forwarded to PCI
 9	accesses to 80000h-9FFFFh forwarded to PCI
 8	accesses to 00000h-7FFFFh forwarded to PCI
 7	accesses to DC000h-DFFFFh forwarded to PCI
 6	accesses to D8000h-DBFFFh forwarded to PCI
 5	accesses to D4000h-D7FFFh forwarded to PCI
 4	accesses to D0000h-D3FFFh forwarded to PCI
 3	accesses to CC000h-CFFFFh forwarded to PCI
 2	accesses to C8000h-CBFFFh forwarded to PCI
 1	accesses to C4000h-C7FFFh forwarded to PCI
 0	accesses to C0000h-C3FFFh forwarded to PCI
SeeAlso: #01011