ZX81 with music: The Sound Demo by HOOY-PROGRAM





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Published on Apr 4, 2012

ZX81 is a Sinclair Research computer released in 1981. It has no sound, 1Kb of memory, and black&white (monochrome) graphic in hardware resolution 64x48 pixels. BASIC is its main operating system, working on Zilog Z80 CPU 3,25Mhz.

The newest device for ZX81 users is ZXpand invented and developed by SirMorris and being sold by RWAP Software. The ZXpand gives to our ZX81:
- 32Kb of RAM,
- flash (instant) loading/saving of programs,
- SD card as an easy data-transfer with PC,
- sound of AY chip (nowadays it's mostly Yamaha YM2149, like in Atari ST and a lot of ZX Spectrum machines),
- joystick port (in the AY module),
- the port mentioned above is also a port for mouse (also in standard of Atari ST).

This demo has been made for ZX81 with ZXpand with AY-module. It's only BASIC, in a joke convention rather, but still - actually it shows for real coders what could be possible to do with the mentioned full hardware combo, if even such a bone-head like me could do anything bearable.

If You have ZX81 with ZXpand and AY-module, You can download the demo from here:

The song from this demo is called "Rubber pleasures" and You can download its MP3 recording from here: http://yerzmyey.i-demo.pl/Yerzmyey-Ru...

Also I invite You guyz to ZX81 forum:

And now - the INFO TXT of the demo:
(C) 2012 by HOOY-PROGRAM Basic Laboratory
for ZX81 with ZXpand and AY-module (ZonX compatible).

Title: "The Sound Demo".
Music, demo-code and ideas by Yerzmyey/H-PRG
AY STC-Player for ZX81 by Andy Rea
1K Twister Effect coded by Gasman/H-PRG
Pictures by Factor6/H-PRG and Yerz/H-PRG

This demo is a version for ZX81 with ZXpand + AY.
IT DOESN'T WORK on emulators.

It *should* work on ZX81 32Kb + ZonX or Mr-X AY-interfaces but probably somebody would have to incorporate the STC file into the main sdemo.p file (especially for tape users). And change the ZXpand's syntax (info below).

The demo uses some ZXpand syntax that doesn't work on plain ZX81 (ROM issues) -
- line 8000 is for setting ZXpand's RAM into 'high' (to put there 10Kb of music),
- line 8001 is for loading from FAT (SD card) the music file MUS.STC.

Greetz to all ZX81 fans (sorry, I my brain isn't good enough to mention them all) -
Siggi, Sir Morris, Andy Rea, Moggy, PokeMon, Loilove, Paul, Math123, Zsolt, XavSnap, Andre***, Angus, Bobs, Mr Beep, Shaun_B, Sasha2000, 1024MAK, RetroTechie, Iturbez, MOB-i-L, Jegs2, Decicoder, RWAP, Bbock, Bill H, Kmutra, Philsan, ZX81jens, Slipstreem, Anonymous, Zappadog, Black Sun, Noice, Bodo Wenzel, Calodox, Pardal, Factor6, Gasman, Ted, Tadeu Curinga, The Wiz, Thommy, Spilldig, Spirantho, Thunor, Gus, ZX81Museum, Prolog, Amauget, Spodula, Jose_Leandro, Guinnless, PrimitivePerson, RetroGamerVX, Martyg, ZX80nut, JackRyan, SKW41, Prime, Hawk, NotCliveSinclair, ZX81 Fan, ZX-Bruno, Christopher, Zschopower, Palmheads, Crankorgan, Compuman, Nama, Taos99, Mike3, Paul Panks, Lee Hart, Gozzo, Forthretro.new.fr, ksng36, Chad, Littlejohn, KnightFire, Superfo, Wilf_ZX, Jond, Malcohol, Kiwisek, SDW, Utz (Irrlich Project), Beanz, Ali, Frank Moller, Dieter Hucke, Joachim, t0m, Seaman, MatthiasS, Kai Fischer, WOW, Roko, Sbetamax, Georg, Willi, HWS, TomR, Holmatic, Ulrich, Stefan, Mrdoc, HWE, Uk7of9, Oscar and all the others!

ZXpand, ZXpand-AY and Mr-X AY for Your ZX81
You can get from here: http://www.rwapsoftware.co.uk/zx812.html

March - April 2012


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