49 lines
1.5 KiB
Markdown
49 lines
1.5 KiB
Markdown
#Cool ARM Ripoff
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*A simple (and ridiculous) virtual machine/CPU made for no real reason/purpose.*
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***Written in C, made by David Goeke.***
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###Current features:
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- few to none.
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- 32 general purpose registers
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- 32-bit addresses
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###Needed features:
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- push/pop
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- call/ret
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- jmp/conditional jmps
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- store high 11 bits of an immediate in memory
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###instuctions (arithmetic):
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- add
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- sub (subtract)
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- mul (multiply)
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- div (divide)
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- mod (modulus, division remainder)
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- shl (logical shift left)
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- shr (logical shift right)
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- ahr (arithmetic shift right)
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- ror (logical rotate right)
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- and (logical AND)
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- or (logical OR)
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- xor (logical XOR)
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- not (logical NOT/invertion)
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- xchg (exchange registers)
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###Insutrctions (load/store):
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- ldr (load register with value from memory, using the program counter as the base)
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- lds (load register with value from memory, using the stack pointer as the base)
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- ldb (load register with value from memory, using a specified register as the base)
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- ldi (load register with and immediate value, only low 21 bits)
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- str (store register at memory, using the program counter as the base)
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- sts (store register at memory, using the stack pointer as the base)
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- stb (store register at memory, using the specified register as the base)
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- ldh (load high 11 bits of register with immediate)
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- sti (store a 21-bit immediate at memory, using the program counter as the base)
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- stj (store a 21-bit immediate at memory, using the stack pointer as the base)
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###Instructions (misc):
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- nop (do nothing)
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