SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

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q5911
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Joined: Fri Mar 19, 2021 2:14 pm

Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by q5911 »

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.
1.png
2.png
I tried to parse out part of the pinout.
3.png
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.
5.png
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q5911
Posts: 20
Joined: Fri Mar 19, 2021 2:14 pm

Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by q5911 »

This is the dump of this cartridge, but the file header is described as Mapper 168.
OK.nes
(1 MiB) Downloaded 72 times
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krzysiobal
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by krzysiobal »

q5911 wrote: Mon Dec 20, 2021 7:00 pm 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.
Can you please provide higher resolution and more detailed photos of this cartridge from both sides?
q5911
Posts: 20
Joined: Fri Mar 19, 2021 2:14 pm

Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by q5911 »

krzysiobal wrote: Tue Dec 21, 2021 1:00 am
q5911 wrote: Mon Dec 20, 2021 7:00 pm 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.
Can you please provide higher resolution and more detailed photos of this cartridge from both sides?
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. :lol:
q5911
Posts: 20
Joined: Fri Mar 19, 2021 2:14 pm

Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by q5911 »

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.
front.jpg
back.jpg
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krzysiobal
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by krzysiobal »

q5911 wrote: Tue Dec 21, 2021 2:18 am 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.

front.jpg
back.jpg
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?)

Image
q5911
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Joined: Fri Mar 19, 2021 2:14 pm

Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by q5911 »

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.
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krzysiobal
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Re: SUBOR SB97 - Famiclone with floppy+LPT+Keyboard

Post by krzysiobal »

q5911 wrote: Thu Dec 23, 2021 8:49 pm If you really want to karaoke, why don't you plug the microphone directly into the stereo? So, it doesn't matter, right?
Isn't it supposed to support two microphones at once, so you can sing with your friend? Or maybe one microphone and one auxliary audio input, like the background music from tape?

BTW. As I knew I spotted some other cartridge with the "Bent" logo - here is a 2-in-1 MMC3 multicart:
Image Image
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