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Update README.md

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@ -76,7 +76,7 @@ Two text video modes are currently supported:
We plan to support HGR graphics eventually.
You can set the startup video mode by holding down the appropriate number
_NOTE:_ You can set the startup video mode by holding down the appropriate number
key while Applecorn starting (while it is loading the ROM file.)
### Escape Key
@ -137,18 +137,25 @@ drive 1. Applecorn uses the ProDOS `ON_LINE` MLI call to find the
volume associated with the physical device. If slot 6, drive 1, contains
the volume 'FLOPPY', then a path `:S61/TESTFILE` will be converted to
`/FLOPPY/TESTFILE`.
- It is possible to refer to the current working directory (current prefix
in ProDOS terms) using `.` (like Linux or Windows) or `@` (like BBC ADFS.)
The current working directory notation is only supported at the beginning
of pathnames.
- Support is provided for easily accessing the parent directory. This
may be denoted using `..` (like Linux or Windows) or `^` (like BBC ADFS.)
The parent directory notation is only supported at the beginning of
pathnames, but it may be applied multiple times to navigate further up
the tree. Some examples:
the tree.
- Some examples:
- `/H1/APPLECORN` - absolute path
- `APPLECORN` - relative path
- `./APPLECORN` - relative path (explicit)
- `^` - parent dir
- `..` - parent dir (alternate form)
- `^/^` - up two levels
- `../..` - up two levels (alternate form)
- `^/MYSTUFF` - file or directory in parent
- `../MYSTUFF` - alternative way to refer to sibling directory
- Since Acorn's DFS allows filenames beginning with a digit, while ProDOS
requires names to begin with an alphabetic character, Applecorn prefixes
any file or directory names beginning with a digit with the letter 'N'.
@ -272,18 +279,21 @@ For example: `*ACCESS *.ASM WR`
`*COPY <listspec> <*objspec*>` - Copy file(s). There are two forms of
the `*COPY` command:
- `*COPY <objspec> <*objspec*>` - Copy a single file. The first argument
must refer to a file and the second can be a file or a directory.
If the target file exists and is writeable it will be overwritten.
If a directory is specified as the destination then the file will
be copied into the directory using the same filename. No wildcards
are allowed in the source filename in this case. An example of
this type of usage is `*COPY TEXT/ABC.TXT ../BACKUPS/ABC.BACKUP.TXT`
must refer to a file and the second can be a file or a directory.
If the target file exists and is writeable it will be overwritten.
If a directory is specified as the destination then the file will
be copied into the directory using the same filename. No wildcards
are allowed in the source filename in this case. An example of
this type of usage is `*COPY TEXT/ABC.TXT ../BACKUPS/ABC.BACKUP.TXT`
- `*COPY <listspec> <*objspec*>` - Copy multiple files. The first
argument refers to a list of files, specified using wildcards. The
second argument must refer to a directory. All the files included
in the wildcard pattern will be copied into the destination
directory. For example of copying multiple files is
`*COPY :71/DOCS/*.TXT :72/TEXTDIR`
argument refers to a list of files, specified using wildcards. The
second argument must refer to a directory. All the files included
in the wildcard pattern will be copied into the destination
directory. For example of copying multiple files is
`*COPY :71/DOCS/*.TXT :72/TEXTDIR`
- Recall that `@` or `.` may be used to specify the current working
directory, while `^` or `..` may be used to specify the parent
directory.
`*FX a[,x,y]` - invokes `OSBYTE` MOS calls.