59 lines
1.5 KiB
Plaintext
59 lines
1.5 KiB
Plaintext
How to backup Infocom's ZORK III game:
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*Insert DOS disk in drive A
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A>DISKCOPY A: B: <-- Ignore the errors on tracks 1-3!
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*Place your ZORK I or ZORK II disk in drive A and a blank disk in drive B.
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BE SURE THAT YOUR ORIGINAL IS WRITE-PROTECTED!!!
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A>
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*Now take out your ZORK disk and insert your DOS disk in A.
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A>DEBUG
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-R CS
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xxxx
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:0000 <-- you enter this
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-R DS
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xxxx
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:0040
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-R IP
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xxxx
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:7C00
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-R ES
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xxxx
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:0000
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-L 0:7C00 0 0 8
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-G =0:7C00 0:7C32
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-G 0:7C44 <-- Don't take a shortcut here!
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-R ES
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xxxx
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:04C5
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-G 0:7C46
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-E 7C0:007C 02 08
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-W 800:0000 1 8 8
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-E 07C0:007C 03 04
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-G 0:7C44
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-R BX
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xxxx
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:0000
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-G 0:7C46
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-E 07C0:007C 02 08
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-W 04C5:0000 1 10 8
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-E 07C0:007C 03 04
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-G 0:7C44
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-R BX
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xxxx
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:0000
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-E 07C0:007C 02 08
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-W 04C5:0000 1 18 8
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-E 0:7C41 B8 08 02
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-W 0:7C00 1 0 8
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-Q
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*This patch was done under DOS 1.1 - I haven't tried it under DOS 2.0 yet -
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which may cause unpredictable results...
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*Take out your new disk in drive B and write-protect it.
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It is now DISKCOPY-able.
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*Reboot your system - press ALT-CTRL-DEL.
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