Date   : Thu, 22 Dec 2005 16:12:01 +0000
From   : "Ian Wolstenholme" <BBCMailingList@...>
Subject: Re: TMS6100 PHROM Image

When I was looking into how the speech system worked, I remember
it being rather complicated.  It is a serial ROM rather than a paged ROM
and even getting it to speak words other than the built-in words
and word parts by making them up from the raw words sounds involved
a lot of calculation and you had to read the bytes in reverse order.

I have a couple of "empty" (presumably) TMS6100 chips but I've no idea
how to get the Phrase ROM data into them.

Best wishes,


Ian

----- Original Message -----
From: The Prof
To:  <bbc-micro@...>
Sent: Thu, 22 Dec 2005 00:13:13 -0000
Subject: Re: [BBC-Micro] TMS6100 PHROM Image

>From what I remember of the original speech ROM, they were in a special
serial format ROM with a four bit address and serial output. I've never seem
a dump of one, they were mask programmed, not an EPROM or Flash. The funny
socket that originally fitted into the 'ash tray' on a B was going to be for
programs supplied in the same format. I don't think any were made.

Sprow has a neat upgrade:
http://www.sprow.co.uk/bbc/speechupgrade.htm

I still have an original speech system running somewhere on a BBC I
converted into a talking voltmeter, (long story - I couldn't look at the
test points and a meter on a somewhat dangerous industrial repair).

Mike


----- Original Message ----- 
From: "Jon Welch" <jon.welch@...>
To: <bbc-micro@...>
Sent: Wednesday, December 21, 2005 10:44 PM
Subject: [BBC-Micro] TMS6100 PHROM Image


> Hi,
>
> Has anyone got a file image of the Kenneth Kendall PHROM they could e-mail
> me please or give me a URL where I can download it ?
>
> It would be much appreciated.
>
> Jon.
>
>
>