I have tapes with labels 8-152a 8 Music Coding Program Symbolic #1 8-152 8 Music Coding Program Symbolic #2 8-152 Teddy Bear's Picnic Symbolic 8-152a Penny Lane Symbolic 8-152 Joy to the World Symbolic 8-152 Your Mother Should Know Symbolic 8-152a Penny Lane 0037-7720, 0170=7777 0171=7777, 0172=7750, 0173=6020 Binary 8-152 When I'm 64 0037=720, 0170=7776 0172-7750 8-162 MUSIC FOR THE PDP-8 Load Tunes: 440 Play Tunes: 400 "Start 8 Music" (hand-written, no printed label) On Tue, Jan 1, 2019 at 9:03 PM Kyle Owen via cctalk <cctalk at classiccmp.org> wrote: > On Tue, Jan 1, 2019, 15:18 Adrian Stoness via cctalk < > cctalk at classiccmp.org > wrote: > >> anyone seen these music tapes before i grabed this trays for the oddnes > of >> the content of these tapes? also apears to have the software to play > them? >> >> > https://www.ebay.ca/itm/Lot-of-15-digital-decus-Paper-Tapes-w-Case/27362862… >> >> > https://www.ebay.ca/itm/Lot-of-8-digital-decus-Paper-Tapes-w-Case/273628539… >> would this be some weird synthy type thing? >> control points for the sound boaerd used for automation on some fancy > desk? >> or somthing els? >> > Vince has a listing for some version of DECUS 8-152 on his website ( > > http://svn.so-much-stuff.com/svn/trunk/pdp8/src/decus/8-152/decus-8-152-lst… > ). > I have reverse engineered it enough to have his version play a few songs. > However, it seems like there's a difference between the music tapes I have > and the listing he has. > > I don't know what hardware was required of this software, but I suspect it > to be a DAC responding on address 055. This seems to match with an AA01 > option. > > Did you end up buying these tapes? I have digitized the music tapes I > bought from the seller and will post them soon. It would be excellent if > the buyer of this lot would do the same. > > Musically, > > Kyle >

On Thu, Jan 3, 2019 at 3:29 PM allison via cctech <cctech at classiccmp.org <mailto:cctech at classiccmp.org>> wrote: Those were likely with a PDP12 or LAB-8 with DAC board.? The code actually is a roughly digital version of tones in 10 or 12 bit form by writing sequential words (waveforms) to the DAC.?? Do you have any information on the AA01-A DAC that was used with the PDP-12?

I see in the PDP-12 System Reference Manual that it is capable of supporting three channels, 12 bits each. It gives an example of one instruction, 6551, which loads the first DAC. Is it safe to assume that 6552 and 6554 are the other instructions to load the other two DACs?

I see the AA50-A in the 1972 PDP-8 Small Computer Handbook has sequential instructions for updating the DAC channels (up to 8). AA05-A/AA07 use a more complex address/data method to address more total channels, but that is listed in the Laboratory Computer Handbook as an option on the Negibus.

Of course everyone here forgets the First Philadelphia Computer Music Festival on vinyl from '78 with samples of computer played music.? I run my copy on occasion just to remember being there. I don't think this album has been forgotten; I have a copy, and I know others with copies, too. It seems as though "Unplayed by Human Hands" (both versions) are less well-known. I would like to work on getting the original software archived, assuming it's still out there, as it ran on a Straight-8.

On Thu, Jan 3, 2019, 17:48 allison <allisonportable at gmail.com <mailto:allisonportable at gmail.com> wrote: ITs also on line. The recordings, or the software? If you're referring to the latter, please send a link! I know someone has a GitHub repository, but it's missing any and all PDP-8 files.? Kyle