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- Introduction Page 1
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- Introduction to BIOS, XBIOS, and GEMDOS Calls
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- Not all of the hardware and software utilities of the ST computer are directly
- supported by standard Pascal operations. Personal Pascal allows you to access
- such machine-specific operations by giving you access to the BIOS, the Xtended
- BIOS, and the GEMDOS systems. These three pieces of software allow you to
- control the ST hardware and perform disk operations not directly supported by
- standard Pascal. The Personal Pascal compiler is smart enough to generate the
- proper code to access these routines, providing you tell it what parameters
- those routines are expecting. This documentation will provide you with enough
- information to write Pascal programs that call the BIOS, XBIOS, or GEMDOS.
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- Since there are so many calls available in those three subsystems, we are
- splitting the description of the calls into several sections. Not all of
- those sections will be available right away, but we will be steadily adding
- documentation so we can have a complete set as soon as possible. The sections
- of documentation that will be available are:
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- Character oriented I/O
- Disk file I/O
- Hardware port configuration
- Time and date functions
- Sound generation
- Directories and paths
- Directory searching
- Graphics hardware
- Miscellaneous
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- In addition, a numerical list of all BIOS, XBIOS, and GEMDOS calls, with their
- appropriate Pascal bindings, will be available at a later date.
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- We also recommend purchasing the book "Atari ST Internals", from Abacus books.
- Not all of the information contained there is accurate, but most is, and much
- more information is available there than we can hope to provide.
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