Re: Mockingboard v1a Speech Chip (SC-01)?

[Michael J. Mahon <mjmahon@aol.com>]

TomCh <tomcharlesworth@blueyonder.co.uk> wrote:
> On Thursday, May 10, 2012 3:49:53 PM UTC+1, Tempest wrote:
>> On Wednesday, May 9, 2012 11:38:39 AM UTC-4, Tempest wrote:
>>> On Wednesday, May 9, 2012 11:36:02 AM UTC-4, Tempest wrote:
>>>> Will a SC-01 (Votrax) speech chip work in the ReactiveMicro
>>>> Mockingboard v1a or does it need to be the newer SSI-253P chip?
>>> 
>>> Also, is the SC-01-A the same chip and will it work with the
>>> Mockingboard?  I believe the -A was just an upgrade to the SC-01.
>> 
>> Anyone?
> 
> It won't work: they are completely different physically (pin count: 22 vs
> 24) & in functionality (the 64 phonemes are in a different order, and don't map 1:1).
> 
> NB. In AppleWin I used the SSI263's phonemes for SC01 emulation, but this
> is clearly only a rough approximation (but good enough for the 2 games that use the SC01!).
> 
> Tom

Ironically, the original name of the SSI-263 was the SC-02. ;-). So you'd
expect it to be an improvement.

Unfortunately, some of the phoneme transitions in the '263 were quite rough
(think pops) compared to the SC-01, necessitating extra filler phonemes to
smooth out the speech.

-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon