; see https://github.com/hlorenzi/customasm for documentation

#bankdef program
{
    #bits 8
    #addr 0x00
    #size 0xFF
    #outp 0x00
}
#subruledef register
{
    0      => 0b000
    1      => 0b001
    2      => 0b010
    3      => 0b011
    4      => 0b100
    5      => 0b101

}

#ruledef
{
    imm6 {value}                            => 0b00 @ value`6
    load r{src: register}, r{dst: register} => 0b10 @ src`3 @ dst`3
    aload                                   => 0b10 @ 0b110 @ 0b110
    in r{r: register}                            => 0b10 @ 0b110 @ r
    out r{r: register}                           => 0b10 @ r @ 0b110
}    

#ruledef
{
    or          => 0b01 @ 0b000 @ 0b000
    nand        => 0b01 @ 0b000 @ 0b001
    nor         => 0b01 @ 0b000 @ 0b010
    and         => 0b01 @ 0b000 @ 0b011
    add         => 0b01 @ 0b000 @ 0b100
    sub         => 0b01 @ 0b000 @ 0b101
    ALU_RES1    => 0b01 @ 0b000 @ 0b110
    ALU_RES2    => 0b01 @ 0b000 @ 0b111
    ALU_EXT1_RES0 => 0b01 @ 0b001 @ 0b000
    ALU_EXT1_RES1 => 0b01 @ 0b001 @ 0b001
    ALU_EXT1_RES2 => 0b01 @ 0b001 @ 0b010
    ALU_EXT1_RES3 => 0b01 @ 0b001 @ 0b011
    ALU_EXT1_RES4 => 0b01 @ 0b001 @ 0b100
    ALU_EXT1_RES5 => 0b01 @ 0b001 @ 0b101
    ALU_EXT1_RES6 => 0b01 @ 0b001 @ 0b110
    ALU_EXT1_RES7 => 0b01 @ 0b001 @ 0b111
    ; and so on...
    ALU_EXT7_RES1 => 0b01 @ 0b111 @ 0b000
}

; conditional jump block
#ruledef
{
    bn => 0b11 @ 0b000 @ 0b000
    beqz => 0b11 @ 0b000 @ 0b001
    bltz => 0b11 @ 0b000 @ 0b010
    blez => 0b11 @ 0b000 @ 0b011
    ba => 0b11 @ 0b000 @ 0b100
    bnez => 0b11 @ 0b000 @ 0b101
    bgez => 0b11 @ 0b000 @ 0b110
    bgtz => 0b11 @ 0b000 @ 0b111
}

; halt encodings
#ruledef
{
    hcf => 0b10 @ 0b111 @ 0b111
    halt => 0b10 @ 0b111 @ 0b111
}