Recent posts

#1

General Discussion - Introductions / Re: CPCRadio module

Last post by Prodatron - Today at 15:48

I suppose it's cool because it hasn't been done before.

A radio for the CPC has been done already around 2017, it is called SE-One and produced by Hans/TMTLogic. There was both an MSX and a CPC version, I still have the latter one:

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Beside playing FM radio...

https://www.youtube.com/watch?v=vvlGBS3nNiY
...it was fully compatible to the old MP3MSX hardware (like the SF3 etc.) and so was able to play MP3s as well.

Indeed TMTLogic produced a DAB radio later as well. Unfortunately his website is a little bit limited now, but there are links to a huge Google Docs repository.

There are players for both the FM and the DAB radio hardware in SymbOS, developed by EdoZ:
http://www.symbos.de/appinfo.htm?00053
http://www.symbos.de/appinfo.htm?00052





But I guess it's not compatible to this new hardware.

#2

D

Games / Re: Pinball Magic 2024 (WIP)

Last post by DataPro - Today at 13:03

2.15.0.0
Hello and thanks for the game.
I will try it this week on real machine.
I see a great effort has been made on music and I want to tell how much I appreciate that.

#3

General Discussion - Introductions / Re: CPCRadio module

Last post by Gryzor - Today at 12:19

Depending on the cost why not both?

#4

Technical support - Hardware related / Re: cable DDI-1 for CPC 6128

Last post by Bryce - Today at 11:38

The original design for the B drive on a 6128 was to use the normal FD-1 with a normal cable. So the 6128 is indeed prepared for the 5V lines. Also those lines are anyhow signal lines with active low. So the only problem would be if the CPC would pull them down. But as that never happens it is not a problem that they are high. There is no such thing like power injection. It is power will get pulled. And as this is correct voltage level even if it would be connected to something that is internal 5V it would not damage anything.

So from single point of view those lines are unused in the CPC and only used for power supply on DDI-1.

Not quite correct. The lines used for the 5V supply were otherwise GND lines. They aren't connected on the 6128 side to avoid a short circuit and on the DDI-1 the connector nearest the expansion has those pins removed from the connector to avoid damage if you were to add a second drive.

Bryce.

#5

General Discussion - Introductions / Re: CPCRadio module

Last post by Bryce - Today at 11:29

I suppose it's cool because it hasn't been done before. There are lots of single chip Radio IC's around with digital tuning etc to do this. Unfortunately he doesn't show the other side of the PCB to give it away. I think I would have made a DAB radio though. With an AM/FM antenna that close to a CPC and monitor, you are mainly going to receive the noise coming from the computer.

Bryce. 

#6

General Discussion - Introductions / Re: What computer did you have...

Last post by Gryzor - Today at 09:22

Only 50 people reading this forum?  Come on!

There are currently 3,725 registered users on the forum, but it would be an interesting exercise for @Gryzor to analyse how many of them are currently active (i.e. have logged in within a certain period of time).

Yeah unfortunately the forum doesn't do that, I'm afraid. I could dig into the db of course and do manual queries, but it requires quite some looking around

#7

General Discussion - Introductions / Re: CPCRadio module

Last post by McArti0 - Today at 09:17

If the audio output is connected to the sound line on the expansion port, the radio would be heard in the CPC speaker.

#8

General Discussion - Introductions / Re: CPCRadio module

Last post by Gryzor - Today at 09:17

Yes, that much is clear, nobody said it's revolutionary in a technical way, but still .

#9

General Discussion - Introductions / Re: CPCRadio module

Last post by eto - Today at 08:53

Whaaaat? What's this?!

nothing spectacular. It's a FM module that is controlled by the CPC. I would expect a simple address decoding logic activates the FM IC which gets the data from the data bus. The IC does all the radio logic including sound output. 

In short: your CPC controls a radio IC but you won't listen to a radio with your CPC. 

#10

Technical support - Hardware related / Re: Amstrad GX4000 - Video Pro...

Last post by McArti0 - Today at 08:35

Check whether transistors Q3,4,5 between the base and the emitter have approximately 0.7 V
Connect nsync to the sound line. You should hear a 50hz buzz in your headphones. Try connecting the LUM signal straight to the TV video input.