It's great that the forum is finally back to normal.
I have a cartridge that needs to be verified and it is described on Wiki as mapper514.
Below is a picture of the cartridge.
I tried to parse out part of the pinout.
However, I cannot verify the Mapper chip successfully. I have tried several schemes, but none of them can work properly. Is there any way to verify this Mapper chip? Like using 74XX chips or PAL/GAL.
You only need some of these pins.
SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
This is the dump of this cartridge, but the file header is described as Mapper 168.
- krzysiobal
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
Can you please provide higher resolution and more detailed photos of this cartridge from both sides?
Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
There are no problems, but it will take days, even weeks. This cartridge is not with me now. It sleeps at home in the countryside.krzysiobal wrote: ↑Tue Dec 21, 2021 1:00 amCan you please provide higher resolution and more detailed photos of this cartridge from both sides?
Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
I couldn't wait to ask my friends to help me take photos in my home. Now I've removed all the components from the reverb part of its microphone.
- krzysiobal
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
I've analyzed the photos.
PRG is surelly banked in 32 kB amounts, but there is no WRAM.
Mapper inputs:
* CPU-D7..0,
* CPU-A14,A13,
* CPU R/!W,
* /ROMSEL,
* M2,
* PPU-A13..A10
* two legs of W2 potentiometer
outputs:
* two signals to the 36 pin edge connector (EXT PRG /CE?)
* CP1/CP2 (to the MN3207 chip which is an programmable delay line used for audio effect?)
Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard
As you said, slot-2 and Slot-10 should be CE/OE signals.
This extension interface is used to increase the number of songs, and so far I haven't found any evidence of this expansion card.
W2 potentiometer to adjust CP1, CP2 pulse frequency, control delay time, used to adjust the reverberation effect.
If you really want to karaoke, why don't you plug the microphone directly into the stereo? So, it doesn't matter, right?
VA' is the virtual ground of the 2.5V op amp.
This extension interface is used to increase the number of songs, and so far I haven't found any evidence of this expansion card.
W2 potentiometer to adjust CP1, CP2 pulse frequency, control delay time, used to adjust the reverberation effect.
If you really want to karaoke, why don't you plug the microphone directly into the stereo? So, it doesn't matter, right?
VA' is the virtual ground of the 2.5V op amp.
- krzysiobal
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- Joined: Sun Jun 12, 2011 12:06 pm
- Location: Poland
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