MHT Speech Synthesizer
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MHT Speech Synthesizer aka Sintetizador de voz (MHT Ingenieros)
Technical
Probably uses a SP0256(-AL2?) chip.
- The I/O addresses are unknown.
- The clock frequency is unknown (as shown on the photo, it uses an oscillator, ie. NOT the 4MHz signal on the expansion port).
Support software
- No (known) software?
Pictures
The part numbers on the chips seem to be scratched-off (or covered by paint). The "GI" logo on the large chip implies that is the polular SP0256(-AL2) speech chip from General Instruments. The clock frequency of the oscillator isn't visible (from the perspective how the photo was taken).