$ cat d8_tab.py
from pta.BasicWordInstruction import *

Insn('ldib *',    I8, 0x01)
Insn('stab *',   I10, 0xB1)
Insn('jmp *',    I11, 0x10)
Insn('nop',       I0, 0x00)

Insn('ldab @x',   I0, 0x74)
Insn('ldab @x,*', I7, 0x74)
$ cat d8.a
    nop
    nop
    nop

start:
    ldib 0x0
    stab ledloc
    ldib 0xff
    stab ledloc
    jmp start

ledloc = 0x123

    ldab @x
    ldab @x, 0
    ldab @x, 19
$ python ptasm.py d8.a
0000: 0000 0000 0000 0100 b123 01ff b123 1003
0008: 7400 7400 7413