31 Jan
2008
31 Jan
'08
12:29 a.m.
On 31/01/2008 04:25, Jim Brain wrote:
My son and I watched War Games a few nights back, and
I pulled out my
old Jameco JE520 speech synthesizer. We played with it a bit tonight,
and it has a bad EPROM #2, so the upper half of the first word set is
garbled. Questions:
* Anyone have a JE520 that could copy the ROM?
* Or, anyone have other ROMs for the DIGITALKER (soft copies, that is)?
* Anyone have a datasheet on this device? NS54104
I don't have a JE520, but I do have a NatSemi DT1057 kit, which includes
the MM54104 Speech Processor Chip and a couple of speech ROMs. I have
the data sheets for the DT1050 Digitalker Standard Vocabulary Kit and
DT1056/7 kit, which include some data for the SPC. The ROMs are
standard MM52164, which is a fairly ordinary 24-pin 8Kx8 NMOS masked ROM
(CS on pin 20, A10, A11, A12 on pins 19, 18, 21). In the 2-ROM kit, one
ROM has active-high chip select, and the other has active-low, so
they're controlled by A13 from the SPC.
I can probably scan the two data sheets later today.
--
Pete Peter Turnbull
Network Manager
University of York