Sinclair ZX80 / ZX81 / Z88 Forums

Hello Moggy, >Just a question sascha, is the Zeddy fast enough to read and execute the data straight from the SD card? I cannot give you an answer now.....sorry .... However if you look at my code I have posted in the german forum there is a pause implemented to get about 8000Hz: LD A,20 wait1: dec ...

>well done Sascha Thank you Moggy! I implemented the same just to play around with my MrX soundcard ( http://www.eightbits.de ). I will update my www site with files for download asap. Either the latest version of the card I will show there. For speech synthesis it is planned to build a daughter boa...

Hello Everybody, if anyone would like to buy my first zonX Prototype ..... http://www.ebay.de/itm/zx81-zonx-zon-x-Sounkarte-/110759077016?pt=Klassische_Computer&hash=item19c9c16498 It is already a full featured device, responds to all known zonx adresses, stereo etc. The endversion of the card, will...

Hello, some months ago I was searching for a project combining retro computing with GAL programming because i bought an EPROM programmer from Hong Kong that was also able to program GALs. Cause I always wanted to have an AY-Sound on my ZX81, which I own since 1981, I decided to build a clone. I thin...

Thank you for your answer.....

I was thinking about your former request "It sounds awful though - completely distorted. Scratchy - almost like it's clipping.".

What was the problem? How did you solve the same. As I wrote I had problems too, coming from the reset line.

Regards
Sascha2000

Congrats sirmorris!!!

What was the earlier problem causing that scatterred sound?

@sirmorris >It sounds awful though - completely distorted. Scratchy - almost like it's clipping. I've added an mp3 to see if anyone can shed any light. Do you still have that problem? I had a similar effect with my ym2149 but not as intensive like yours. Reason was a too long wire from /RESET of the...