marie super deluxxx

16-bit opcodes
16-bit word size
64K 16-bit words of RAM

memory map:
Data: 000-7ff bank A
Data: 800-fff bank B
Code: 000-fff bank C (for Code)
indirect accesses ignore the banks and use the full 16 bits

0xxx call    xxx    call subroutine
1xxx load    xxx    load memory
2xxx store   xxx    store memory
3xxx add     xxx    add memory
4xxx sub     xxx    subtract memory
5xxx and     xxx    bit-wise AND with memory
6xxx or      xxx    bit-wise OR with memory
7xxx xor     xxx    bit-wise XOR with memory
8xxx jump    xxx    jump to address
9xxx loadi   xxx    load indirect
Axxx storei  xxx    store indirect
Bxxx addi    xxx    add indirect
Cxxx inc     xxx    increment memory
Dxxx dec     xxx    decrement memory
E0xx load    #xx    load immediate (positive)
E1xx load   #-xx    load immediate (negative)
E2xx add     #xx    add immediate
E3xx sub     #xx    subtract immediate
E4xx sub     #xx    and immediate
E5xx or      #xx    or immediate
E6xx xor     #xx    xor immediate
E7xx shiftl  #xx    shift left X bits
E8xx shiftr  #xx    shift right X bits
E9xx banka   #xx    set bank A
EAxx bankb   #xx    set bank B
EBxx bankc   #xx    set bank C (goes into effect next call/jump)
ECxx
EDxx
EExx
EF00 halt           stop
EF01 return         return from subroutine
EF02 neg            accumulator = 1 - accumulator
EF03 compl          accumulator = ~accumulator
EF04 push           push accumulator to stack
EF05 pop            pop accumulator from stack
EF06 setsp          set stack pointer to accumulator
EF07 getsp          set accumulator to stack pointer
EF08
EF09
EF0A
EF0B
EF0C
EF0D
EF0E
EF0F
F