300 Model Bit Decode List
• I/O and memory space split
33
0
0
1
32
0
1
0
− Main Memory
− TURBOchannel I/O Space
− Diagnostics Only
MR−0057−93RAGS
1 1 − Diagnostics Only
• Bit decode map for TURBOchannel I/O space
0
0
1
29
0
1
0
− Option #0
MR−0058−93RAGS
31
0
0
0
0
1
1
1
1
1
0
0
1
1
1
0
1
0
1
− Option #1
− Unused
− Unused
− SCSI Interface
− IOCTL ASIC and JUNKIO
− CXTurbo Interface
− System CSRs
• Dense vs. sparse space
28
0
1
MR−0054−93RAGS
− Dense Space
− Sparce Space
Appendix A discusses dense and sparse space allocation as it pertains to
programming the DEC 3000 AXP.
2–8 Memory and I/O Addressing
Comments to this Manuals