[userbinator]

Those register names seem to be 8008-inspired:

    A (0): GP register/arg 0
    B (1): GP register/arg 1
    C (2): GP register/arg 2
    D (3): GP register/arg 3
    L (4): GP register/(L)ow index register
    H (5): GP register/(H)igh index register

It claims to be a "RISC architecture" but the instructions are 1-3 bytes variable length, which is also more similar to the 8008 and other early 8-bit CPUs.