Changes

MHT Speech Synthesizer aka Sintetizador de voz ([[MHT Ingenieros]])

Probably It uses a [[SP0256]](-AL2?) chip. * The '''I/O addresses are unknownaddress is &FBE0.'''(only A10,A7,A6,A5 and A4 are decoded)

Port FBE0h READ: bit 6 Status 1 (0=Speech Busy, 1= Supported software =Ready/Halted) (SBY Pin, Speech Busy) bit 7,D5-D0 Not used (garbage, probably usually highz)Port FBE0h WRITE: bit7-6 Ignored bit5-0 Allophone number ;data can be send when Status.Bit'''?'''=0

* No (known) software?[[SP0256]]* [[SP0256 Voice Generator]]* [[SP0256 Instruction Set]]* [[SP0256 Allophones]]* [[SP0256 Pin-Outs]] Now, thanks to Jose Leandro, the hardware specialist of the spectrum, with his famous page : http://trastero.speccy.org/cosas/JL/JL.htm We can know more about this hardware.

 File:MHT-sintetizdor_de_voz-001.jpg|OutsideFile:MHT-sintetizdor_de_voz-003.jpg|InsideFile:MHT-sintetizdor_de_voz-004.jpg|Component SideFile:MHT-sintetizdor_de_voz-007.jpg|Solder Side 

<gallery caption="MHT Speech Synthesizer Layout, thanks to Jose Leandro"> File:MHT Speech Synthesizer - interface_delante.jpg|TopFile:MHT Speech Synthesizer - interface_detras.jpg|BottomFile:MHT Speech Synthesizer - cara_componentes.jpg|ComponentsFile:MHT Speech Synthesizer - cara_pistas.jpg|TracksFile:MHT Speech Synthesizer - PCB Front.png|PCB BackFile:MHT Speech Synthesizer - PCB Back.png|PCB FrontFile:MHT Speech Synthesizer - PCB Chips.png|PCB ChipsFile:MHT Speech Synthesizer - PCB Complete.png|PCB CompleteFile:MHT Speech Synthesizer - componentes.png|ComponentsFile:MHT Speech Synthesizer - pistas.png|TracksFile:MHT Speech Synthesizer - Layout.png|Layout </gallery> The part numbers on the chips seem to be scratched-off (or covered by paint, or is it just old glue from stickers?).  The "GI" logo on the large chip implies that it is the popular General Instrument [[SP0256]] speech chip, probably the standard -AL2 version (the ending L2 may be still visible? not sure there - on the photo it vanishes under the pot axis).  The clock frequency of the oscillator isn't visible (from the perspective from where the photos were taken). 

'''Caution''' - There are two files, [[:Image:MHT-sintetizdor_de_voz-005.jpg]] and [[:Image:MHT-sintetizdor_de_voz-008.jpg]] circulated in internet. Despite of their filesnames, they do NOT show a MHT speech synthesizer - please do not add these files to this page! The hardware shown on those pics is an [[ARA Video Digitizer]], nothing to do with MHT Speech. == Other Pictures Software Covertape == <gallery caption="Software Covertape"> Image:Software del Sintetizador de Voz (MHT) Front Covertape.jpg|Front CovertapeImage:Software del Sintetizador de Voz (MHT) Back Covertape.jpg|Back CovertapeImage:Software del Sintetizador de Voz (MHT) Tape - Side B.jpg|Tape - Side BImage:Software del Sintetizador de Voz (MHT) Tape - Side A.jpg|Tape - Side A

Not sure where these photos come from, and if they do actually show a speech synthesizer== Downloads == * [[Media:Software of Sintetizador de voz (MHT Ingenieros). There isn't much visible, the upper board contains an enormous amount zip|Software of logic chips Sintetizador de voz (no idea what MHT Ingenieros).zip]] (CDT forEmulators)* [[Media:MHT Speech Synthesizer (Eagle). The lower board contains even more logic chips zip|MHT Speech Synthesizer (strangeEagle), and two big chips, which might be .zip]] (MHT Speech Synthesizer files for Eagle)* [[Media:Sp0256-al2-reversed-bit-order.zip|SP0256-AL2 ROM]] ('''caution''' - the bytes in the file are in reversed bit-order, or RAMie. the "Target" values are unreversed, or maybe a all other opcodes and parameters are reversed) == Other CPC Speech Synthesizers == * [[Amstrad SSA-1 Speech Synthesizer]] ([[SP0256]] based)* [[Dk'tronics Speech Synthesizer]] ([[SP0256]] based)* [[TMPI speech chipsynthetizer]] ([[MEA8000]] based)* [[Software Speech Synthesizers]] (Software based) == Weblinks == * [http://www.cpc-power.com/index.php?page=detail&num=10936 ''MHT Speech Synthesizer'' from CPC-Power]* [https://cpcrulez.fr/hardware-audio-synthetiseur_vocal-MHT-sintetizdor_de_voz.htm ''MHT Speech Synthesizer'' from CPCrulez]* [http://hardware.speccy.org/temp/Amstrad-SintetizadorMHT.html ''MHT Speech Synthesizer'' from hardware.speccy.org] [[Category:Music and sound]] [[Category:Peripherals]]