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12 lines
465 B
Markdown
12 lines
465 B
Markdown
## Known differences between w11a and KB11-C (11/70)
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### 18-bit UNIBUS address space not mapped into 22-bit address space
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The 11/70 maps the 18 bit UNIBUS address space into the upper part of
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the 22-bit extended mode address space. With UNIBUS mapping enabled, this
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allows to access via 17000000:17757777 the memory exactly as a UNIBUS
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device would see it.
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The w11a doesn't implement this remapping, an access in the range
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17000000:17757777 causes an NXM fault.
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