https://oldwiki.cpcwiki.eu/api.php?action=feedcontributions&feedformat=atom&user=207.171.180.101CPCWiki - THE Amstrad CPC encyclopedia! - User contributions [en]2026-08-29T00:47:34ZUser contributionsMediaWiki 1.25.1https://oldwiki.cpcwiki.eu/index.php?title=RSX&diff=15600RSX2007-04-24T00:53:57Z<p>207.171.180.101: </p>
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<div><b>RSX</b> (<b>R</b>esident <b>S</b>ystem e<b>X</b>tensions) were a way to extend the command set of Locomotive BASIC, e.g. for accessing external peripherals like disk drives, light pens, speech synthesizers and so on.<br />
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RSX commands can be distinguished from normal commands by the preceding pipe symbol "'''|'''" (also called "RSX bar", "RSX pipe" or "RSX slash").<br />
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Some of the best known RSX commands are the ones provided by AMSDOS, as they were present on all CPC664, CPC6128, CPC6128+ and CPC464 with DDI-1:<br />
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'''|A'''<br /><br />
Makes drive A: the current work drive<br />
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'''|B'''<br /><br />
Makes drive B: the current work drive<br />
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'''|CPM'''<br /><br />
Starts CP/M (or other systems) from a system disk<br />
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'''|DISC'''<br /><br />
Switches back to disk drive use after |TAPE<br />
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'''|TAPE'''<br /><br />
Makes the CPC use the tape recorder for file access<br />
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For a full command reference to the AMSDOS RSX commands, see [[AMSDOS]].<br />
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RSX command extensions can be implemented through ROMs (like AMSDOS or other disk operating systems) or by programs.</div>207.171.180.101