Splice Byte XD-300

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Splice Industria Brasileira, a Brazilian company specialized in electronics and telecomunications, seems to have produced only one chess computer: the Byte XD-300

Splice Byte XD-300
Hersteller Splice Jahr: 1982 (?)
Elo 1311 Preis
Programmierer Ron Nelson BT-2450
Prozessor Z80 BT-2630
Prozessortyp 8 Bit Colditz
Takt ≈3,6 MHz (3,582 MHz) Rechentiefe
RAM 256 Bytes Display 4-stellige 7-Segment LED Anzeige
ROM 4 KB Zugeingabe Tastatur
Bibliothek 69 Positionen Zugausgabe Display
Spielstufen 7
Stromversorgung   Netzteil: 9V/350mA DC (Cinch-Stecker, Plus innen)
Verwandt Fidelity Chess Challenger 7
Clone of the Fidelity Chess Challenger 7

Splice Byte 1.JPG

© Picture by Michael Watters - Chess Computer UK

Splice Byte 2.JPG

© Picture by Michael Watters - Chess Computer UK

An analysis of the XD-300 revealed what it seems to be a clone of the Fidelity Chess Challenger 7. There are some minor differences, for example, the pads between the keypad and the sensors underneath the board are very different giving a different feeling when you press the keys. Not better or worse, just different. Also, it uses a true speaker instead of a piezo beeper as in the Fidelity Chess Challenger 7. But the hardware architecture is the same (CPU type and signal clock, RAM, etc.), and the content of the ROM is identical.

Comparison with Fidelity Chess Challenger 7

© Pictures by Gerardo M. - Los Proyectos de Berger / Website

Speaker instead of Buzzer
CPU: Z80 at 4MHz as Fidelity CC7
Fidelity CC7 vs Byte XD-300
The ROM are equal bitwise!
Splice Byte XD-300 PCB2.jpg

© Pictures by Michael Watters - Chess Computer UK

This seems like a modern (and patched) version of the same computer (1982?)