Tag: dac

Retains the original POKEY while adding FPGA stereo POKEYs, Covox channels, digital mixing, and a high-rate stereo DAC.

The product exposed a login-or-register-to-buy path on 2026-07-27. It requires a working original POKEY and can be installed in stages: basic stereo output, a second POKEY through an A4 connection, Covox through D6xx or D7xx decoding, and full internal-audio mixing. The approximately 1 mm PCB intentionally leaves pin 31 unconnected; verify that it remains isolated from the motherboard. Only the basic stage uses a single address jumper, while the expanded functions require additional signal and audio wiring.

Adds four 8-bit digital audio channels with stereo output through the Commodore user port.

The Shareware Plus page was last updated on 2025-08-01 and then claimed email ordering, but it exposes no conventional store or current checkout path. HR-061 confirmed that the original maker URL is gone and closed with direction to stop pursuing the unread Mk2 path for now. Availability remains unknown; PCBWay says the author stopped sharing the Mk2 there.

Combines two Mockingboards, one ALF music card, and four S.A.M. DAC channels on one Apple II audio card.

The store showed Add to Cart with one base-card option and one optional bar-graph panel in stock on 2026-07-24. MEGA Audio emulates two Mockingboards but does not emulate their SSI-263 speech chips.

Adds a four-channel discrete DAC beneath the PIA chip for higher-quality Atari 8-bit sample and module playback.

The product exposed a login-or-register-to-buy path on 2026-07-28. The seller's demonstration shows an Atari 800XL, which is the only exact model established by human review. The published address table assigns both LS138 pin 9 and pin 10 to $D600, so verify the desired address against reliable board documentation rather than relying on that table. A non-socketed PIA must be desoldered and socketed.