Michael Neary <MNeary.es@XEROX.ARPA> (01/23/85)
- Is there a library of stimuli that I can feed to the General Instruments AY3-8910 chip to create special sound effects and/or music? I just acquired some old game boards using this chip, and I figured that I should endeavor to avoid re-inventing the wheel while I try to justify this purchase. This particular design is driven by a Z-80, but libraries targeted for other CPU's (using AY3-8910) are also solicited, since they would tend to be table-driven. Particular places I'm hoping for pointers to: App notes for plug-in cards using this chip for popular micros. (Apple? C-64? S-100?) App notes for computers using this chip (are there any?) Software (or tables only) for arcade games. I will be happy to share my results with all who request, so if your reply is confidential, please so state. Thanks, ~ Mike
haddock@waltz.UUCP (01/29/85)
/**** waltz:net.micro.cpm / brl-tgr!MNeary.es / 2:36 pm Jan 23, 1985 ****/ >Is there a library of stimuli that I can feed to the General Instruments >AY3-8910 chip to create special sound effects and/or music? I just >acquired some old game boards using this chip, and I figured that I >should endeavor to avoid re-inventing the wheel while I try to justify >this purchase. Mike You may want to try and get some old issues of the 99'er magazine. You ask WHY? Because the TI 99/4a used TI's 76498a sound chip which worked *similarly* to the GI AY3-8910/2. Obviously the values will be different but it's the general scheme (timings and frequencies) of how the sounds are produced that will allow you to re-create them on the different sound chip and maybe learn how to create your own. Also, several years ago Steve Ciarcia had a column (in BYTE, naturally) devoted to the GI sound maker and you may be able to use some of his examples. Nonetheless, please let me know of any libraries or further examples you may come across. Thanks, ================================================================ _____ -Rusty- |\/ o \ o | ( -< O o Where's the fish? |/\__V__/ ARPA: Haddock%Waltz%TI-CSL@CSNet-Relay Rusty@Maryland (forwarded to CSNet address) CSNet: Haddock@TI-CSL USENET: {convex!smu, ut-sally, texsun, rice} ! waltz ! haddock