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Most ROM programmers that support vintage ROMs require old PC hardware and interfaces like ISA, LPT ports that are no longer readily available.
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USB based programmers like the TL866 don't support the high voltages, long programming cycles and high currents required of vintage EEPROMs.
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Convenient Raspberry Pi Hat style form factor.
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Uses an eight bit shift register as both an IO expander and 5V level shifter to interface ROM address lines.
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A real bi-directional level shifter for the ROM's data pins.
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An analog mux supporting the ROM's full high voltages and current.
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Simple C driver program used directly on the Pi's command line.
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Smart single-byte retry algorithm accounts for difficult to program adddresses and lower VPP voltages.
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Supports several vintage classic arcade machine ROMs - like those in Space Invaders, Donkey Kong and Pacman.
