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-# Vertex KISS 32 - Machine Code Spec
-^ So Vertex is already a name for an FPGA, should we change this?
-I propose a different name:
-
-    ASAP Soc 32 a KISS architecture
-
-    As
-    Simple
-    As
-    Possible
-
-## General Instruction Format
-        X = HEX
-        B = BIN
-
-        MAX INSTRUCTIIONS = 256
-        ALL INSTRUCTIONS ARE ATOMIC
-
-### C-Type, Control
-        XX       X    X       XXXX
-        Opcode   d    RS1     IMM
-
-### I-Type, Immediate
-        XX        X     X     XXXX
-        Opcode    RD    RS1   IMM
-
-### R-Type, Arithmetic
-        XX         X      X      X      XXX
-        Opcode     RD     RS1    RS2    ddd
-
-### JR-Type, Compare and Jump
-        XX          X                   X      X        XXX
-        Opcode      Jump Condition      RS1    RS2      ddd
-
-### JI-Type, Compare and Jump
-        XX          X                X     XXXX            
-        Opcode      Jump Condition   RS1   IMM
-
-## Registers
-        Maximum registers = 16
-        Register width = 32
-        All are R/W except 0X
-
-        0X      Always Zero
-        AX      GP-0
-        BX      GP-1
-        CX      GP-2
-        DX      GP-3
-        EX      GP-4
-        FX      GP-5
-        GX      GP-6
-        HX      GP-7
-        IP      Instruction Pointer
-        SP      Stack Pointer
-        FLG     Processor Flags
-        CS0     Control status 0 (saves IP)
-        CS1     Control status 1 (saves SP)
-        CS2     Control status 2 (saves FLG)
-        PDA     Page Directory Address
-
-### FLG Flag Register Bitfield
-        The lower half is read/write
-        The upper half can be read or written to in supervisor mode only
-
-        FLG[0]          Carry
-        FLG[1]          Overflow
-        FLG[2]          Zero
-        FLG[3]          Sign
-        FLG[4]          Odd       (parity)
-        FLG[5-15]       RESERVED
-        FLG[16]         Interrupt enable*
-        FLG[17]         User mode*
-        FLG[18]         Paging enabled*
-        FLG[19-31]      RESERVED*
-
-        *Must be in supervisor mode (FLG[17]=0) to set
-
-## Integer Instructions
-
-### R-Type
-        ADD     RD, RS1, RS2    RD = RS1 + RS2
-        SUB     RD, RS1, RS2    RD = RS1 - RS2
-        XOR     RD, RS1, RS2    RD = RS1 ^ RS2
-        OR      RD, RS1, RS2    RD = RS1 | RS2
-        AND     RD, RS1, RS2    RD = RS1 & RS2
-        LSL     RD, RS1, RS2    RD = RS1 << RS2 (logical)
-        LSR     RD, RS1, RS2    RD = RS1 >> RS2 (logical)
-        ASR     RD, RS1, RS2    RD = RS1 >> RS2
-        MUL     RD, RS1, RS2    RD = RS1 * RS2
-        MULU    RD, RS1, RS2    RD = RS1 * RS2 (unsigned)
-        DIV     RD, RS1, RS2    RD = RS1 / RS2
-        DIVU    RD, RS1, RS2    RD = RS1 / RS2 (unsigned)
-
-        *DIV is based on shift-and-multiply algorithm
-        *DIV Ex: 8000/192
-                 (8000/64)/3
-                 (8000>>6)/3
-                 (8000>>6)*0x5555>>16=41
-
-### I-Type
-        ADDI    RD, RS, IMM     RD = RS + IMM
-        SUBI    RD, RS, IMM     RD = RS - IMM
-        XORI    RD, RS, IMM     RD = RS ^ IMM
-        ORI     RD, RS, IMM     RD = RS | IMM
-        ANDI    RD, RS, IMM     RD = RS & IMM
-        LSLI    RD, RS, IMM     RD = RS << IMM (logical)
-        LSRI    RD, RS, IMM     RD = RS >> IMM (logical)
-        ASRI    RD, RS, IMM     RD = RS >> IMM
-        DIVI    RD, RS, IMM     RD = RS / IMM
-        DIVIU   RD, RS, IMM     RD = RS / IMM (unsigned)
-
-### JR Instructions
-        JMP     0       if (True)
-        JMP     1       if (RS1 != RS2)
-        JMP     2       if (RS1 == RS2)
-        JMP     3       if (RS1 >  RS2)  Unsigned
-        JMP     4       if (RS1 >= RS2)  Unsigned
-
-        JMP     C       if (RS1 >  RS2)  Signed
-        JMP     D       if (RS1 >= RS2)  Signed
-
-### JI Instructions
-        Compare and then jump (IP = JMP)
-
-        JMPI     0          if (True)
-        JMPI     1          if (RS1 != IMM)
-        JMPI     2          if (RS1 == IMM)
-        JMPI     3          if (RS1 >  IMM)  Unsigned
-        JMPI     4          if (RS1 >= IMM)  Unsigned
-
-        JMPI     C          if (RS1 >  IMM)  Signed
-        JMPI     D          if (RS1 >= IMM)  Signed
-
-### Jump Aliases
-        JEQ
-        JLT     
-        JGT
-        JLE
-        JGE
-        JLTU 
-        JGTU
-        JLEU   
-        JGEU   
-
-
-### Control Instructions
-        NOP             Do nothing -> opcode = ZERO
-        HLT             Spinlock the CPU*
-        PUSHR   RS      SP+=1     ;*SP = RS
-        POPR    RS      RS = *SP  ;SP-=1
-        PUSHI   IMM     SP+=1     ;*SP = IMM
-        INVP    IMM     Invalidate entry in TLB*
-        JMP     IMM     Jump to address IMM
-        CALL    LABEL   CS0=IP; IP=LABEL
-        INT     IMM     CS0=IP; CS1=SP; CS2=FLG; IP=IDT[IMM]*
-        SCALL           Same as call but is used to make calls to the kernel (fixed IDT address)
-        IRET            IP=CS0; SP=CS1; FLG=CS2*
-        RET             IP = CS0
-        SIF             Set interrupt flag*
-        CIF             Clear interrupt flag*
-
-        *Requires processor to be in supervisor mode (FLG[17]=0)
-
-## Interrupt Descriptor Table
-This will be in a fixed memory location, this will contain pointers to the interupt
-function.
-
-        IDT[0]          Divide-by-zero exception
-        IDT[1]          Hardware error (NMI)
-        IDT[2]          Overflow
-        IDT[3]          Invalid Opcode
-        IDT[4]          General-protection fault
-        IDT[5]          Page fault
-        IDT[6]          Software interrupt (reserved for OS)
-        IDT[7-31]       RESERVED
-        IDT[32-255]     Platform interrupts (PIC, hard drive, keyboard, etc.)
-
-## Page Directory
-
-The page directory contains 1024 page tables that have 1024 entries that are
-4096 bytes wide. Optionally, the page table can be 4MB bytes wide with a setting
-in the page table. If this bit is set, there is 1024 entries in the page
-directory; otherwise, there are 2^20 entries.
-
-### Page table layout
-
-        PT[0]           Present
-        PT[1]           R/W
-        PT[2]           User-mode
-        PT[3]           Accessed
-        PT[4]           Dirty
-        PT[5]           PWT
-        PT[6]           Cache-disable
-        PT[7]           Page size (0=4KB 1=4MB)
-        PT[8-31]        Physical address of page