Search found 1293 matches

by Andy Rea
Mon Jan 15, 2018 5:12 pm
Forum: ZX BASIC
Topic: PEEK & POKE math (?? +256 ??)
Replies: 2
Views: 71

Re: PEEK & POKE math (?? +256 ??)

We are not adding 256 to the low byte... when we do something like PRINT PEEK 16388 + 256 * PEEK 16389 To display the current value of ramtop you have to remeber the order of processing. the computer will do both PEEKS then it will multiple the second PEEK [highbyte] value by 256 and finally add on ...
by Andy Rea
Thu Jan 11, 2018 2:51 pm
Forum: Development
Topic: AY-3-8910 (AY/YM) music generation?
Replies: 21
Views: 625

Re: AY-3-8910 (AY/YM) music generation?

the save and loads are done in basic it is clunky but was done that was so that others could modify the basic to suit there storage system i.e USB or other SD card solution, what ever solution you use needs to be able to load / save chunks of memory.

regard Andy
by Andy Rea
Thu Jan 11, 2018 7:43 am
Forum: Development
Topic: AY-3-8910 (AY/YM) music generation?
Replies: 21
Views: 625

Re: AY-3-8910 (AY/YM) music generation?

Our Friend and AY music master Yerzmyey made some instructions

https://chipmusic.org/forums/topic/6668 ... tion-ayym/
by Andy Rea
Wed Jan 10, 2018 9:15 pm
Forum: Development
Topic: AY-3-8910 (AY/YM) music generation?
Replies: 21
Views: 625

Re: AY-3-8910 (AY/YM) music generation?

sirmorris wrote:
Tue Jan 09, 2018 11:13 pm
I recalculated the note table for the zeddy's clock so the playback matches the speccy version tonally, if anyone's interested. Did I send it to you Andy?
#
Yes, Yes you did :D

I Have been a little un zeddy lately... but i guesss my mojo will return sometime

Regard Andy
by Andy Rea
Tue Jan 09, 2018 5:10 pm
Forum: Development
Topic: AY-3-8910 (AY/YM) music generation?
Replies: 21
Views: 625

Re: AY-3-8910 (AY/YM) music generation?

wow.... daveZX4th knows his stuff huh :mrgreen: fabulous work i am also most grateful as it gets the cat off my back for a short while

regards Andy
by Andy Rea
Tue Jan 02, 2018 11:09 pm
Forum: Development
Topic: ZXMore development thread
Replies: 7
Views: 164

Re: ZXMore development thread

I think this is interesting, too. And of course there are some more systems running with higher frequencies - I remember the Uber Zeddy from Andy Rea with about 20 MHz as far as I remember. 8-) But this maybe just one single pimped system running somewhere in Fast Britain. 8-) ah yes Still the only...
by Andy Rea
Tue Jan 02, 2018 5:10 pm
Forum: Development
Topic: AY music menu/player
Replies: 17
Views: 827

Re: AY music menu/player

Glad it was of use, as you can probably guess my annotations are my best guess at what's what... And yeah it took a while and plenty of single stepping the code to work it out.

Regards Andy
by Andy Rea
Mon Jan 01, 2018 12:19 am
Forum: Sinclair Misc
Topic: Happy New Year
Replies: 5
Views: 159

Re: Happy New Year

Happy zeddy new year

madaxe...
by Andy Rea
Mon Dec 25, 2017 8:16 pm
Forum: Development
Topic: If you like your submarine simulations fast, arcadey,...
Replies: 26
Views: 935

Re: If you like your submarine simulations fast, arcadey,...

Back from my jollies, normal service is resumed over at sell my retro https://www.sellmyretro.com/offer/details/28480

Go grab your UDG board and enjoy Zedragon in all its glory on your zx81

5 for immediate sale, will build more before new year.

Regards Andy
by Andy Rea
Fri Dec 22, 2017 3:26 pm
Forum: Development
Topic: AY music menu/player
Replies: 17
Views: 827

Re: AY music menu/player

Duh... My bad since you can continuously set your 4th frame counter to 1 so that a routine can be actioned every frame you'll be singing in no time.

P.s my auto carrots is broccoli