Boots – shoes – and leggings
Patent
1993-03-22
1996-04-16
Kriess, Kevin A.
Boots, shoes, and leggings
395427, 395821, 395822, 395823, 364970, 3649705, 364DIGII, 364245, 364DIGI, G06F 1206, G06F 1202
Patent
active
055091385
ABSTRACT:
A microcomputer system with a data destination facility provides for accessing dynamic RAMs of different speeds faster or slower depending on the dynamic RAM speed. When the data destination facility maps the dynamic rams, it also saves a bit indicating whether the block of RAM is a high or low speed RAM. When the memory controller attempts to access a certain location, the data destination facility then returns the value of the speed bit associated with that block of memory to the memory controller state machine, which then omits or adds clock cycles to the memory access depending upon the speed of the memory. Further, in setting up the data destination facility, the system initialization routine determines SIMM sizes by first touching the memory locations at which the SIMMs are occupied to determine if there is memory there, and then determines the SIMM speeds based on a combination of the SIMM sizes and the SIMM identification codes returned through a standard serial shift register.
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Cash Christine G.
Thome Gary W.
Compaq Computer Corporation
Kriess Kevin A.
Richey Michael T.
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