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Update README.md
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README.md
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README.md
@ -94,6 +94,15 @@ the ROM after Ctrl-Reset. Any user program in aux memory will be untouched.
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For ROMs such as BASIC or COMAL, the `OLD` command can be used to recover the
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For ROMs such as BASIC or COMAL, the `OLD` command can be used to recover the
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program in memory.
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program in memory.
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### Special VDU Features
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- `Ctrl-S` will pause the screen and `Ctrl-Q` will resume scrolling.
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- The BBC Micro 'Copy Editor' function is supported. Use the Apple II
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cursor keys to move the copy cursor and the `Tab` key to copy a character
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from the copy cursor to the insert cursor.
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- BBC Micro function keys are supported. Use Open Apple with the number
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keys for the unshifted function keys.
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### Star Commands
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### Star Commands
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`*QUIT` - Terminate Applecorn and quit to ProDOS. Because the 'BBC Micro'
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`*QUIT` - Terminate Applecorn and quit to ProDOS. Because the 'BBC Micro'
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@ -314,9 +323,6 @@ Applecorn currently has the following limitations:
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languages to work correctly. For example in BBC BASIC the following
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languages to work correctly. For example in BBC BASIC the following
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commands work: `OPENIN`, `OPENOUT`, `OPENUP`, `BGET#` `BPUT#` `PTR#=`,
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commands work: `OPENIN`, `OPENOUT`, `OPENUP`, `BGET#` `BPUT#` `PTR#=`,
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`EOF#`, `EXT#`.
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`EOF#`, `EXT#`.
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- Missing operations include `OSGBPB` and `OSFSC`. These are required by
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the BCPL language system, so currently it is not possible to load the
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BCPL compiler for example.
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- The VDU driver is quite primitive at present. Is supports 80 column
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- The VDU driver is quite primitive at present. Is supports 80 column
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text mode (`MODE 0`) and 40 column text mode (`MODE 1`). There is
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text mode (`MODE 0`) and 40 column text mode (`MODE 1`). There is
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currently no graphics support.
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currently no graphics support.
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