HP 27201A, the world’s first speech synthesizer by a major computer company

smbakeryt has written an article on reverse-engineering the protocol used by the HP 27201A:

The HP 27201A is a TMS5220 based speech synthesizer released in 1983. According to the HP museum, it’s the first synthesizer designed by a major computer computer. Yes, the TI99/4A’s speech synthesizer uses the same IC and is at least contemporary if not even predating the HP module. The module has very sparse documentation on the web, so I had to disassemble the Z8 ROM and then reverse engineer the protocol.

See the full post on Scott M. Baker’s blog.

Check out the video after the break.

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