Universal Serial Interface for Amstrad CPC (a.k.a USIfAC)

[LambdaMikel]

Have a look at the


https://github.com/lambdamikel/LambdaSpeak3/blob/master/cpc/lambda/LS300.dsk

MP3 basic demo program.
Of course, this doesn't work with USIfAC serial interface (it was written for LambdaSpeak 3), but you can see what bytes to send over the serial port in order to control the MP3 module.

[SkulleateR]

Thx    Will give it a try

[secmast]

I have bought a RS232 to TTL Serial Port Converter Module DB9 Connector MAX3232 Serial Module.
Can I power this device from the USIfAC directly or should I power it from an external power supply ?
In the case of external power supply is the ground should be "comon" ?


Thanks

[ikonsgr]

Any device connected to Usifac that needs 5v power supply, can be powered using the '+' pin of the 4pin uart port. This actually uses amstrad's 5v supply.
BUT, when you use a direct usb2serial adapter (which takes power from usb port), you must NOT connect 5v supply pin, ONLY tx,rx and ground is needed.

[secmast]

Ok thanks

[secmast]

Hi,


I've done a small RS232 terminal program in assembly supporting extended ASCII characters in Latin-1252.
This is very simple to use it, launch the program, choose the desire speed and you ready to go.
There is no Log/Buffer in place yet, but at least you can connect to any RS232 device up to 115200bps.