Hm OK, pity that I cannot do it by myself,since it's closed source.
Posts by Comos
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Don't Panic. Please wash hands.
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Hi Jens, any updates on this pls?
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Each SID can be configured to be on the left, right or both channels at the same time. So what you perceive as "strange" can be fixed with a setting in the remote control menu.
The strange perception I meant when you have a Stereo setup in front of you from the hearing point of view.Sure you can change these settings for a single SID,but just to play normal/Stereo SID tunes you have to change the settings all the time instead just simply hitting the RESTORE key as my proposed example above.
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Well maybe nobody think of,that when you have two identical SIDs installed to play Stereo SID tunes and you also want to hear classic SID music aswell,that when using the build in Stereo jack in combination with a HiFi system to hear just left speaker I perceive kinda strange.
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Jens, any updates regarding this pls?
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What you call "simple" was already explained to be "near-impossible" because the required information for this function is not in the place where a decision about the SID setting can be made.
In other words: The guy who toggles the switch does not know what's being played back. He can't possibly make the decision.
Now I didn't mean any automated functionality or extra combo keys, forgot to mention that,sorry.Since you are able in the configuration to set the long press of the RESTORE key to swich between SID 1 and 2 (when configured in mono),can this be used to switch them to DUAL MONO only if the STEREO SID option is in use ? (would not make sense otherwise). You are able to control the CS lines of both SID's so in that case you only need to decode both CS lines to base $D400.
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Neither key combinations, nor automatic switching with a timeout are an option, as the functionality is split over two different chips of the design: The Micro controller knows when the power-switch "tap" function is used and when the RESTORE key is pressed, but it does not know when "Shift" or other keys are pressed. So the only possible combinations would be "Power-tap and Restore", but that's not very practical, so no option in my opinion. What may be an option is to look at one of the joystick fire button; The micro controller (which does all the SID setup and audio routing) can also see the state of the fire buttons, so they may be used as qualifiers for such a special action. However, this is also of limited pracitcal use, and the original idea of routing the two fire button signals to the MCU was a completely different one.
Further, the MCU does not know when the CPU is accessing an alternate/Stereo SID address, as that's only known to the CPU and the Xilinx chip. There is only very limited information exchange between the two, and such a feature was not planned from the start - so no automatic switching either.
So before you jump to more feature-creeping, we'll have to see if there is a really practical solution to switching between more SID configs. And then we need to find time to implement that
Hi Jens,
any chance to implement this from technical point of view simple function?
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Had some time to dig into it a bit, the C64C according to the schematics had two independent reset circuits as seen at:
https://myoldcomputer.nl/wp-content/uploads/2015/11/252312.jpg
The EXTRESET which is used for the IEC is reset only during power up (together with both CIA's).The C64 reset part named INTRESET reset only CPU & SID through USER/EXP Port. -
That's a bit strange, the C64C, was not modified for no IEC reset , still has the factory seal unbroken,so that's why I was not aware about this behaviour,.Long time ago I had to equip my drive with it's standalone reset button.The C64C does IEC is reset, but only during power up.
I thought,that during the MK2 design,that selectable IEC reset was taken into account,that's why I asked about the firmware change. -
Hello,
1st difference,that I noticed,when I migrated from my C64C to MK2 is,that when I do perform a C64 reset (via power switch or via cart), it does also reset the IEC.However there is no option in the setup for this.Does the board design allow to have a option for this in the future fw release? I can't dig in the drive mem when I needed to in current state
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OK, thanks for the tech info
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I had an idea if there would be possible to do an automatic stereo music play based on the selected 2nd SID address activity and with given timeout switch back to dual mono, but not sure how difficult that would be to implement in the CPLD.Regarding the switching, is it possible to fetch a key + RESTORE combo or just RESTORE key?
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Hello,
would be possible to add in future fw relase an option when the audio is set to StereoSID configuration to switch via long RESTORE key press to dual mono? The reason is due to the playback of the stadard tunes, where only one channel is played and you had to use somekind a L/R channel joint to and when stereo is played to split it up.This solution is a bit annoying.
