blog:x68_xsimm10ss

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blog:x68_xsimm10ss [2020/08/02 12:11] – [X68000 - TSR XSIMM10ss Memory Expansion Board] johnblog:x68_xsimm10ss [2020/08/07 21:21] (current) – john
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-====== X68000 - TSR XSIMM10ss Memory Expansion Board ======+====== Sharp X68000 - TSR XSIMM10ss Memory Expansion Board ======
  
 The X68000 has a 24bit address bus, which means it can address up to 16MB of RAM, however part of that address space is taken up by video memory and other memory mapped IO ranges, other than the 32bit 68030 models, all X68000 models can have up to 12MB of RAM. The X68000 has a 24bit address bus, which means it can address up to 16MB of RAM, however part of that address space is taken up by video memory and other memory mapped IO ranges, other than the 32bit 68030 models, all X68000 models can have up to 12MB of RAM.
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 The first 2MB of RAM is always on the motherboard; either directly attached (in some later models like the XVI), or as 1MB directly attached chips with a 1MB upgrade card. Anything above that comes via the IO slots. The first 2MB of RAM is always on the motherboard; either directly attached (in some later models like the XVI), or as 1MB directly attached chips with a 1MB upgrade card. Anything above that comes via the IO slots.
  
-The XSIMM6, XSIMM10 and XSIMM10ss all allow you to fit standard 30pin or 72pin SIMM modules to populate that address range between 2MB and 12MB.+The XSIMM6, XSIMM10 and XSIMM10ss all allow you to fit standard 30pin or 72pin SIMM modules to populate that address range between 2MB and 12MB. There's a [[https://gamesx.com/wiki/doku.php?id=x68000:xsimm10_-_memory_expansion_board|good page on the XSIMM10]], as well as [[https://gamesx.com/wiki/doku.php?id=x68000:xsimm6_-_memory_expansion_board|the XSIMM6]] at Gamesx, but both boards are comparatively simple compared to the XSIMM10ss.
  
 Unfortunately, information on the later XSIMM10ss is rather thin on the ground - which is a shame as it has the most flexibility of all the models: Unfortunately, information on the later XSIMM10ss is rather thin on the ground - which is a shame as it has the most flexibility of all the models:
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  • Last modified: 2020/08/02 12:11
  • by john