Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Atari_MMU> ?p ?o. }
Showing items 1 to 19 of
19
with 100 items per page.
- Atari_MMU abstract "The Atari MMU is a custom MMU chip for the Atari 8-bit computers. It enables access to the hardware registers on ANTIC, GTIA, POKEY and 6520 PIA.The later XL/XE MMU (C061618) also selects OS ROM, Atari BASIC ROM, self-test ROM and LEDs in the 1200XL.The user cannot directly manipulate the Atari MMU, but selects the various ROMS and memory via the memory-mapped hardware register known as PORTB (5401710 or D30116). Atari changed PORTB from an input port on the 400/800 machines to an output port on the XL/XE machines, leaving two joystick ports instead of four on the XL/XE machines.By setting and clearing specific bits in PORTB, the user can access either the ROMs or memory locations. No synchronization is required as the OS handles the access.The bit assignments for PORTB on the XL/XE machines are:Note: The 1200XL does not have BASIC built-in.".
- Atari_MMU thumbnail Atari_MMU_chip.jpg?width=300.
- Atari_MMU wikiPageExternalLink mapping.
- Atari_MMU wikiPageExternalLink 203_1_INSIGHT_Atari.php.
- Atari_MMU wikiPageExternalLink achmmu.html.
- Atari_MMU wikiPageID "3006491".
- Atari_MMU wikiPageRevisionID "544175314".
- Atari_MMU hasPhotoCollection Atari_MMU.
- Atari_MMU subject Category:Atari_8-bit_family.
- Atari_MMU comment "The Atari MMU is a custom MMU chip for the Atari 8-bit computers. It enables access to the hardware registers on ANTIC, GTIA, POKEY and 6520 PIA.The later XL/XE MMU (C061618) also selects OS ROM, Atari BASIC ROM, self-test ROM and LEDs in the 1200XL.The user cannot directly manipulate the Atari MMU, but selects the various ROMS and memory via the memory-mapped hardware register known as PORTB (5401710 or D30116).".
- Atari_MMU label "Atari MMU".
- Atari_MMU label "Atari MMU".
- Atari_MMU sameAs Atari_MMU.
- Atari_MMU sameAs m.08k3nt.
- Atari_MMU sameAs Q3627874.
- Atari_MMU sameAs Q3627874.
- Atari_MMU wasDerivedFrom Atari_MMU?oldid=544175314.
- Atari_MMU depiction Atari_MMU_chip.jpg.
- Atari_MMU isPrimaryTopicOf Atari_MMU.
