Zanac (FDS COnversion) - Kaiser KS-7012 (KS-201 chip)

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krzysiobal
Posts: 651
Joined: Sun Jun 12, 2011 12:06 pm
Location: Poland

Zanac (FDS COnversion) - Kaiser KS-7012 (KS-201 chip)

Post by krzysiobal » Sun Nov 03, 2019 1:32 am

I got photos of this cartridge. It uses yet another Kaiser custom chips (KS-201). This PCB is emulated under mapper 346 which is different to the Whirlwind Manu port.
Image Image

Little is known about the game itself (I did not even found the ROM dump) and the chip.
According to cah4e3, this chip is also used with many more Kaiser games, especially the Almana no Kiseki, KS7017, which is Mapper 303.
Because of difference of those mappers, I can predict that the connections are quite different and the KS7017 might also use additional chips.

Anyway, I am not able to anticipate the pinout in 100%. Probably address mask can extend to almost every address bit, except: A1, A8.
I also have no idea what chip should be in the unpopulated place (probably some DIP14 74xx) nor when the second unpopulated ROM should be enabled.
And no idea how the CPU R/W signal goes to this chip

Code: Select all

               .--\/--.
         M2 -> |01  28| -- VCC
    CPU A12 -> |02  27| <- CPU A0
     CPU A2 -> |03  26| -- nc ? 
     CPU A3 -> |04  25| -- nc ?
     CPU A4 -> |05  24| -- nc ?
     CPU A5 -> |06  23| -- nc ?
     CPU A6 -> |07  22| -- nc ?
     CPU A7 -> |08  21| -- nc ?  
 ? WRAM /CS <- |09  20| -- nc ?
 ?  CPU A11 -> |10  19| -- nc ?
 ?  PRG A15 <- |11  18| <- GND (unknown input signal)
 ?  CPU  A9 -> |12  17| <- /ROMSEL
 ?  CPU A10 -> |13  16| <- CPU A14
        GND -- |14  15| <- CPU A13
               '------'
                KS-201
				
Zanac uses the following addresses to switch PRG bank:
     fedcba9876543210
E0E0 1110000011100000
EE36 1110111000110110


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