1 Topic by VanessaEzekowitz

(1 replies, posted in Commodore Computers)

Announcement:

I've made my first push into memory expansion, and would like to let everyone know that I will soon have an REU clone available.

A working prototype now exists and parts are on order for a limited run.  These are intended more for folks who already have an REU but who want to upgrade as cheaply as possible (by using the 8726 REC chip from an existing unit), but I will include the REC chip for an extra cost, while supplies last.

Pre-orders are now being taken, with shipping starting late this month.   These will be selling for $34.95 for the 1 MB size and no REC chip, $54.95 for 512K *with* an REC chip, and $65.10 for 1 MB and an REC chip.

As usual, anyone who wants one need only head over to my store page at [ http://digitalaudioconcepts.com ].

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2 Topic by VanessaEzekowitz

(0 replies, posted in Commodore Computers)

Announcement:

The "SID Symphony II" cartridge is now available, and can be found on the Digital Audio Concepts website (http://digitalaudioconcepts.com), along with the internal stereo SID board and my prototyping cartridge board.

The SID Symphony II can be mapped into any 32-byte slot from $DE00 to $DFE0, and should be work fine alongside most other hardware expansions.  Works with all stereo-aware software that can address a SID in the above range.  It is possible to add a jumper to the cartridge to pick up other page address signals inside the computer (such as $D7xx in the C128).

Each board features an access LED, reset button, and a proper 12v DC-to-DC converter for use with the good old 6581 SID chip.  Each board comes preset for $DE00, which can be changed by flipping one or more DIP switches.  The audio-in line is grounded by default to reduce background noise, which one can undo by simply cutting a jumper pad.

The SID Symphony II is supplied without a SID chip, and is designed to fit into standard Commodore-issue case shells and their clones.

$39.95 each, plus shipping

This is a limited edition run, so as the old trope goes, "Hurry, while supplies last!"
:-)

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3 Reply by VanessaEzekowitz

(8 replies, posted in Commodore Computers)

Thanks for the positive review :-)

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4 Reply by VanessaEzekowitz

(8 replies, posted in Commodore Computers)

Akira: Actually, accessing the DigiMAX board is quite trivial - at each sample cycle (say 15 kHz), change channels by doing a write to the CIA #2 "port A" register, then write to the "port B" register to actually change the output.  Skip the channel select step if you want mono only.

Theta_Frost:  My board supports more address options than the SID2SID, it is smaller in profile, and all the parts are on the TOP where they belong. :-)

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5 Reply by VanessaEzekowitz

(8 replies, posted in Commodore Computers)

I don't know what else has been written to support it, but I originally built it for use with my C64/C128 MOD player software.  Anything that can address a single 8-bit DAC or R2R ladder on the user port will work with it as well.

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6 Topic by VanessaEzekowitz

(8 replies, posted in Commodore Computers)

After lots of late nights in front of my PCB layout and schematic editor programs, I've finally got my internal Stereo SID board to a point where it is ready to sell.

Anyone who wants one, just head over to my new storefront, located at:

http://digitalaudioconcepts.com/

Available fully assembled or as a parts+PCB kit; users will need to specify what machine the board will be used in, plus a few other options.

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