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- Q2205331 subject Q6901441.
- Q2205331 subject Q7215693.
- Q2205331 subject Q8211912.
- Q2205331 abstract "The SCC68070 is a Philips Semiconductors-branded, Motorola 68000-based 16/32-bit processor produced under license. While marketed externally as a high-performance microcontroller, it has been almost exclusively used combined with the Philips SCC66470 VSC (Video- and Systems Controller) in the Philips CD-i interactive entertainment product line. Additions to the Motorola 68000 core include: Operation from 4 - 17.5 MHz Inclusion of a minimal, segmented MMU supporting up to 16 MB of memory Built-in DMA controller I²C bus controller UART 16-bit counter/timer unit 2 match/count/capture registers allowing the implementation of a pulse generator, event counter or reference timer Clock generatorDifferences from the Motorola 68000 core include these: Instruction execution timing is completely different Interrupt handling has been simplified The SCC68070 has MC68010 style bus-error recovery. They are not compatible, so exception error processing is different. The SCC68070 lacks a dedicated address generation unit (AGU), so operations requiring address calculation run slower due to contention with the shared ALU. This means that most instructions take more cycles to execute, for some instructions significantly more, than a 68000. The MMU is not compatible with the Motorola 68451 or any other "standard" Motorola MMU, so operating system code dealing with memory protection and address translation is not generally portable. Enabling the MMU also cost a wait state on each memory access.While the SCC68070 is mostly binary compatible with the Motorola 68000, there is no equivalent chip in the Motorola 680x0 series. In particular, the SCC68070 is not a follow-on to the Motorola 68060.Even though the SCC68070 is a 32-bit processor internally, it has a 24-bit address bus, giving it a theoretical 16MB maximum RAM. However, this is not possible, as all of the on-board peripherals are mapped internally.".
- Q2205331 thumbnail SCC68070.JPG?width=300.
- Q2205331 wikiPageExternalLink 68070.txt.
- Q2205331 wikiPageWikiLink Q1023103.
- Q2205331 wikiPageWikiLink Q1024934.
- Q2205331 wikiPageWikiLink Q1155668.
- Q2205331 wikiPageWikiLink Q1268094.
- Q2205331 wikiPageWikiLink Q1367842.
- Q2205331 wikiPageWikiLink Q13912071.
- Q2205331 wikiPageWikiLink Q165678.
- Q2205331 wikiPageWikiLink Q170416.
- Q2205331 wikiPageWikiLink Q17044509.
- Q2205331 wikiPageWikiLink Q19851307.
- Q2205331 wikiPageWikiLink Q210813.
- Q2205331 wikiPageWikiLink Q2112160.
- Q2205331 wikiPageWikiLink Q259011.
- Q2205331 wikiPageWikiLink Q280409.
- Q2205331 wikiPageWikiLink Q518020.
- Q2205331 wikiPageWikiLink Q667808.
- Q2205331 wikiPageWikiLink Q6901441.
- Q2205331 wikiPageWikiLink Q7215693.
- Q2205331 wikiPageWikiLink Q750469.
- Q2205331 wikiPageWikiLink Q8211912.
- Q2205331 wikiPageWikiLink Q911682.
- Q2205331 wikiPageWikiLink Q937498.
- Q2205331 comment "The SCC68070 is a Philips Semiconductors-branded, Motorola 68000-based 16/32-bit processor produced under license. While marketed externally as a high-performance microcontroller, it has been almost exclusively used combined with the Philips SCC66470 VSC (Video- and Systems Controller) in the Philips CD-i interactive entertainment product line.".
- Q2205331 label "Philips 68070".
- Q2205331 depiction SCC68070.JPG.