G-CPU_Instruction_Set

G-CPU_Instruction_Set - University of Florida EEL 3701...

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University of Florida EEL 3701 Drs. Gugel and Schwartz Revision 0 10-Nov-10 Page 1/2 G-CPU Instruction Set Data Movement Instructions: Machine Codes (hex) Instruction Operand Description # of States 00 TAB none Transfer A to B (inherent addressing) 2 01 TBA none Transfer B to A (inherent addressing) 2 02 mm LDAA #data 8-bit data Load A with immediate data (immediate addr.) 3 03 mm LDAB #data 8-bit data Load B with immediate data (immediate addr.) 3 04 ll hh LDAA addr 16-bit address Load A with data from memory location addr (extended addressing) 5 05 ll hh LDAB addr 16-bit address Load B with data from memory location addr (extended addressing) 5 06 ll hh STAA addr 16-bit address Store data in A to memory location addr (extended addressing) 5 07 ll hh STAB addr 16-bit address Store data in B to memory location addr (extended addressing) 5 08 ii jj LDX #data 16-bit data Load X with immediate data (immediate addr.) 4 09 ii jj LDY #data 16-bit data Load Y with immediate data (immediate addr.) 4 0A ll hh LDX addr 16-bit addr Load X with data from memory location addr. (extended addressing)
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G-CPU_Instruction_Set - University of Florida EEL 3701...

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