* [[AMSDOS Hidden RSX Functions]]
* [[AMSDOS Memory Map]]
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== AMSDOS command reference ==
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Note: In fact, more user areas exist. Deleted files for example are in reality only moved to USER 229 (hexadecimal &E5). You can choose another user with a POKE into AMSDOS variables. For example , '''poke &a701,&e5''' provides access to the deleted files or USER 229 (recycle bin). |Ren,"0:filename.typ","filename.typ" moves the deleted file filename.typ from USER 229 to USER 0. Another example, '''poke &a701,&a2 ''' provides access to USER 162. <br> == Intercepted Firmware Calls == Besides these external commands, AMSDOS facilities are implemented by intercepting these cassette firmware calls: *CAS IN OPEN *CAS IN CHAR *CAS IN DIRECT *CAS RETURN *CAS TEST EOF *CAS IN CLOSE *CAS IN ABANDON *CAS OUT OPEN *CAS OUT CHAR *CAS OUT DIRECT *CAS OUT CLOSE *CAS OUT ABANDON *CAS OUT CATALOG The remaining cassette firmware calls are not intercepted and remain unaffected. <br>
== CAS TEST EOF ==
* If the opened file doesn't have a header then hard EOF is signaled at the end of the current record (Each record is 128 bytes). e.g. if reading a file without a header which is meant to be 2 bytes long, hard eof will not be signalled until byte 128.
* If the opened file does have a header then hard EOF is signaled at the end of the data defined by the header. (i.e. if there is a header and the file has length 2, hard EOF is signalled when reading the third byte).
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== BASDOS ==