mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-07-13 22:29:14 +00:00
a8ab24004d
need to change a bunch to make this work Now load at $4000 as was too big to fit between $1000 and $2000 also turns out our lz4 code was writing past the end, which you notice when you have important code right after the end of HGR1
15 lines
344 B
Plaintext
15 lines
344 B
Plaintext
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Memory Map:
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$0000-$0100 = ZERO PAGE
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$0100-$0200 = STACK
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$0400-$0800 = TEXT/GR PAGE0
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$0800-$0C00 = TEXT/GR PAGE1
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$0C00-$0fff = we use this as TEXT/GR offscreen buffer
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$1000-$1fff = 4k free
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$2000-$3fFF = HGR1 page ; note we never use HGR2 ($4000-$6000)
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$4000-$9600 = roughly 20k(?)
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$9600-$BFFF = DOS3.3
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$C000-$FFFF = peripherals/ROM
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