Apple II Technical Notes Developer Technical Support
Revised by: Matt Deatherage November 1988
Written by: Pete McDonald December 1986
This Technical Note describes the block to actual memory location mapping of /RAM.
Blocks Address Range
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| $70-$7F | $E000-$EFFF |
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| $68-$6F | $D000-$DFFF | (Bank 2)
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| $60-$67 | $D000-$DFFF | (Bank 1)
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| $4E-$5C | $A200-$BFFF |
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| $3D-$4C | $8200-$A1FF |
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| $2C-$3B | $6200-$81FF |
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| $1B-$2A | $4200-$61FF |
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| $0A-$19 | $2200-$41FF |
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| $5D-$5F | $1A00-$1FFF |
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| $4D | $1800-$19FF |
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| $3C | $1600-$17FF |
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| $2B | $1400-$15FF |
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| $1A | $1200-$13FF |
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| $09 | $1000-$11FF |
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| $08 | $2000-$21FF |
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| $02 | $0E00-$0FFF |
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| $03 | Bitmap* |
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Notes: * Synthesized.
1. Blocks 0, 1, 4, 5, 6, and 7 do not exist.
2. Block $7F contains the Reset, IRQ, and NMI vectors and is normally marked as used.
3. The memory from $0C00 - $0DFF is a general purpose buffer used by the /RAM driver.