Try to learn something about everything, and everything about somethingThomas Huxley “Darwin's bulldog” (1824-1895)

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Hints & Tips

DM41X Catalogues

What the different Catalogues show

SHIFT</key> ENTER</key> & enter the number of the catalogue. R/S</key> to stop the auto-scrolling and use SST</key> or </key> / ⇓'' to step through the listing of items. * Catalogue 1 is ''User Programs* Catalogue 2 isExternal Functions* Catalogue 3 isStandard Functions* Catalogue 4 isExtended Memory Directory(is usually empty. After running Cat 4 the current free+Size of extended memory is left in X) * Catalogue 5 isAlarms* Catalogue 6 isUSR Keyboard assignmentsPage created Wed May 25 16:57:27 2022 by John Pumford+Green Page last updated:30/12/25 09:55 GMT