11-08-2012, 12:34 PM
DESIGNING 8- BIT MICROPROCESSOR USING VHDL
DESIGNING 8- BIT .pptx (Size: 131.27 KB / Downloads: 47)
LITERARY REVIEW
Architecture of 8-bit microprocessor
Instruction & operations of microprocessor
Study of VHDL
Basics of Modelsim & xilinx ISE
PROJECT STATUS
ALU/ACC (added B,C and D in this module)
IR(16-bit)
Ports(P1-P4)
Registers(R0-R7)
Synchronizer
USES OF VHDL
VHDL is used to describe digital systems and hence has language constructs for key attributes
Events, propagation delays, and concurrency
Timing, and waveforms
Signal values and use of multiple drivers for a signal
VHDL has an underlying discrete event simulation model
Model the generation of events on signals
Built in mechanisms for managing events and the progression of time
Designer simply focuses on writing accurate descriptions
NAME SPACES
Multiple instances of a name can exist
Local names are the default
Provide the full path name for a name
Visibility of names
Visibility of a name follows the hierarchy
Declared in a package all design units that use the package
Entity in architectures used for this entity
Architecture processes used in the architecture
Process in the process
Subprogram subprogram
SUMMARY
Originally wanted to closely model 8055
Similar to some 8055 functionality
Additions/subtractions …still trying to parallel
User Interaction/ Easy Testing