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Hello, this is the second AGD games for the 6809 release Aeon is a game made by Sunteam for the ZX Spectrum. It was given away free in issue #5 of the online e-zine ZX Spectrum Gamer. The game has four playable parts and came with 9 tape parts, one presentation for each game part and a final part. W...

A nice job, for sure! But I still prefer the PMode4 display, that is much easier to "read". There are not so many games that look great under PMode3 ("Lunar Rover Patrol" being a notable exception). I forgot to say that Chuckie Egg is another good game with PMode3 and might I say The Dark Pit too. ...

A nice job, for sure! But I still prefer the PMode4 display, that is much easier to "read". There are not so many games that look great under PMode3 ("Lunar Rover Patrol" being a notable exception). Thanks to all of you for your kind words! Yes, I think PMode4 with its double horizontal definition ...

Hello, after the last bug corrections and feature additions to the AGD engine with the help of Kees van Oss, I think it is about time to begin releasing games that were created with the AGD program for the ZX-Spectrum. The last addition has been support for the 6309. No specialized code but in case ...

Hello, almost six months have elapsed since I converted the first AGD-engine routine to 6809 code. I began end of June, beginning of July. Now all the ZX-Spectrum code has been converted except for the routines that work for the AY-sound chip. So, time to close the project! With the help of Kees van...

That's interesting Pere. After fine tuning my joystick routine to minimise the potential for `buzz' I found hooking the Dragon up to a TV using RF produced nice clean audio. This would have been my setup as a child which explains why I don't remember background buzz being a problem in the eighties....

Hi Pere. I went through the same thing trying to eliminate `buzzing' when reading the joystick. As you've discovered it can only be minimised but not stopped altogether. :( Stew was a great help and managed to shed quite a bit of light on what's happening to create the buzzing including why differe...

Pere, is there anything in this thread from 2010 that is of any use to you? Hello, thanks a lot for the link! I had the soft uploaded by Steve but in my case didn't cancel the noise. I am reading the joysticks 50-60 times per second and despite disabling audio before that read, there is a low but n...

Hi, it doesn't matter what I do, noise keeps there! Even using this small Basic program creates an unexpected (to me) sound 100 CLS 110 AUDIOOFF 120 A=JOYSTK(0) 130 POKE&HFF20,PEEK(&HFF20)AND3 140 AUDIOON 150 PRINT@128,A;" "; 160 POKE&HFF20,PEEK(&HFF20)AND3 170 GOTO 110 Does anyone know how could so...

sorry, I forgot to say that this program uses the LEFT joystick. Basically to avoid conflicts with keys number 1-2-3-4 It scans the four directions (axis) of the left joystick and its button. Then it scans six keys: Z, I, 1, 2, 3, 4 Anyone found pressed is shown on the screen with a coloured square....