Motorola MVME2300 Series - Manual (Page 223)

Software Considerations
http://www.motorola.com/computer/literature 3-61
3
Table 3-22. PowerPC Data to DRAM Data Mapping
PowerPC DRAM Array
A[27] A[28] Data Bits RA[12]
Upper Falcon DRAM
Data Bits
Lower Falcon DRAM
Data Bits
0 0 dh[00:07] 0 rd[00:07] -
0 0 dh[08:15] 0 rd[08:15] -
0 0 dh[16:23] 0 rd[16:23] -
0 0 dh[24:31] 0 rd[24:31] -
0 0 dl[00:07] 0 - rd[00:07]
0 0 dl[08:15] 0 - rd[08:15]
0 0 dl[16:23] 0 - rd[16:23]
0 0 dl[24:31] 0 - rd[24:31]
0 1 dh[00:07] 0 rd[32:39] -
0 1 dh[08:15] 0 rd[40:47] -
0 1 dh[16:23] 0 rd[48:55] -
0 1 dh[24:31] 0 rd[56:63] -
0 1 dl[00:07] 0 - rd[32:39]
0 1 dl[08:15] 0 - rd[40:47]
0 1 dl[16:23] 0 - rd[48:55]
0 1 dl[24:31] 0 - rd[56:63]
1 0 dh[00:07] 1 rd[00:07] -
1 0 dh[08:15] 1 rd[08:15] -
1 0 dh[16:23] 1 rd[16:23] -
1 0 dh[24:31] 1 rd[24:31] -
1 0 dl[00:07] 1 - rd[00:07]
1 0 dl[08:15] 1 - rd[08:15]
1 0 dl[16:23] 1 - rd[16:23]
1 0 dl[24:31] 1 - rd[24:31]
1 1 dh[00:07] 1 rd[32:39] -
1 1 dh[08:15] 1 rd[40:47] -
1 1 dh[16:23] 1 rd[48:55] -
1 1 dh[24:31] 1 rd[56:63] -
1 1 dl[00:07] 1 - rd[32:39]
1 1 dl[08:15] 1 - rd[40:47]
1 1 dl[16:23] 1 - rd[48:55]
1 1 dl[24:31] 1 - rd[56:63]