The Motorola " sixty-eight-oh-nine " is an 8-bit microprocessor CPU with some bit features from Motorola. It was designed by Terry Ritter and Joel Boney and introduced in It was a major advance over both its predecessor, the Motorola , and the related MOS Technology Unlike the and , the allows fully position-independent code and fully reentrant code in a simple and straightforward way.
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Post a Comment. Thursday, December 2, How do you know 68b09 datasheet. It was a major advance over both its predecessor, the , and the related. Like the , it included an undocumented address bus test instruction that would exceed the limits of some memory controllers, evoking the nickname [. However, there is a certain amount of design philosophy similarity e.
Since a CPU designer could hardly guarantee where this code would be located in a future system, the design focused heavily on support of , code that could be freely located anywhere in the memory map. However, the decisions made by the design team made for a very powerful processor and made possible advanced operating systems like and , which took advantage of the position-independent, re-entrant nature of the to create multi-user multitasking operating systems.
The E was used in the , the , 3 and 4 computers as an optional alternative to their standard , the , the -made home computers clones of the CoCo , and the , , , etc. There the MB was dubbed the Peach , probably in ironic reference to the popularity of the.
It was similar in this to machines produced by , , and several other suppliers. No comments:. Newer Post Older Post Home. Subscribe to: Post Comments Atom.
EF68B09 Datasheet PDF
MC68B09 Datasheet PDF