motorola - How does the 68000 internally represent instructions? -


how 68000 internally represent instructions. i've read there different types of instructions: single effective operation word format instructions, brief , full extension word format instructions. single effective operation word instruction seems represent instruction , lower 6 bits of instruction addressing mode , register. addressing mode , register tell if there follows brief or full extension word format instruction, on turn represents operands instruction. know better manual 68000 programming reference manual.

thanks in advance

the actual internal representation combination of "microcode" , "nanocode". 68000 has 544 17-bit microcode words dispaches 366 68-bit nanocode words.

while may not wanted know, link may provide insights:

http://www.easy68k.com/paulrsm/doc/dpbm68k1.htm


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