https://f256wiki.wildbitscomputing.com/index.php?action=history&feed=atom&title=Use_Core2x 2026-04-15T20:37:56Z Revision history for this page on the wiki MediaWiki 1.41.1 https://f256wiki.wildbitscomputing.com/index.php?title=Use_Core2x&diff=38159&oldid=prev 2025-07-11T07:17:36Z

<p>Created page with &quot;== How to use the New Core2x == The Codec chip is a way to mix and match audio signals together for their single audio output (headphones, RCA jacks). Its datasheet can be found in the goodies github repo: https://github.com/Mu0n/F256MiscGoodies/blob/main/datasheets/WM8776_v4.1-532420.pdf === Codec Registers === {| class=&quot;wikitable&quot; ! Address !! R/W !! B7 !! B6 !! B5 !! B4 !! B3 !! B2 !! B1 !! B0 !! Purpose |- | 0xD620 || W|| D7|| D6|| D5|| D4|| D3|| D2|| D1|| D0|| C...&quot;</p> <p><b>New page</b></p><div>== How to use the New Core2x ==<br /> <br /> The Codec chip is a way to mix and match audio signals together for their single audio output (headphones, RCA jacks).<br /> <br /> Its datasheet can be found in the goodies github repo: https://github.com/Mu0n/F256MiscGoodies/blob/main/datasheets/WM8776_v4.1-532420.pdf<br /> <br /> === Codec Registers ===<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! Address !! R/W !! B7 !! B6 !! B5 !! B4 !! B3 !! B2 !! B1 !! B0 !! Purpose<br /> |-<br /> | 0xD620 || W|| D7|| D6|| D5|| D4|| D3|| D2|| D1|| D0|| Command Low<br /> |-<br /> | 0xD621 || W || R6|| R5|| R4|| R3|| R2|| R1|| R0|| D8|| Command High<br /> |-<br /> | 0xD622 || R|| X|| X|| X|| X|| X|| X|| X|| Busy|| Status<br /> |-<br /> | 0xD622 || W|| X|| X|| X|| X|| X|| X|| X|| Start|| Control<br /> |}<br /> <br /> === How to enable (unmute) every sound device ===<br /> <br /> * Loop-read 0xD622 and wait until bit0 is set to 1<br /> * Send 0x1F to Command Low at 0xD620<br /> * Send 0x2A to Command High at 0xD621<br /> * Loop-read 0xD622 and wait until bit0 is set to 1<br /> <br /> === Audio input devices on the various machines ===<br /> <br /> {| class=&quot;wikitable&quot;<br /> ! CODEC inputs !! F256Jr !! F256K !! F256K2 !! F256Jr2<br /> |-<br /> | AIN1|| SID|| SID|| SAM2695 MIDI|| SAM2695 MIDI<br /> |-<br /> | AIN2|| Line in onboard header || OPL3|| MIDI wavetable|| <br /> |-<br /> | AIN3|| || || PWM|| PWM<br /> |-<br /> | AIN4|| || || VS1053b|| VS1053b<br /> |-<br /> | AIN5|| || Line in onboard header|| Line in onboard header|| Line in onboard header<br /> |}</div>

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