FC_MAPPER4_V2

 
Compared with the previous version
https://oshwhub.com/firseve/fc_mapper4
, the chip used for recording card storage has been modified to 6264. I forgot to try changing it to 62256. In theory, it should be able to
 
use the original 62256. The method consumes too much power, causing the record to be lost soon after the battery is exhausted.
This time I modified pin 26, which is connected to vcc by default. After power-off, the floating
chip components are still the same as the old three, 100nf 1uf 2 T4 The diode uses an extra resistor to limit the current, and the mark is 47k. I actually used a 10k chip
multimeter at the current setting and could not measure the current. . . I don’t know the specific power consumption
of the game Devouring World 1. After leaving the village, the post house in the city on the left records the morning, noon, evening, and the next day. The reading records are still
 
there. In fact, the chip capacitor is dispensable, mainly 2. I only have one diode and current-limiting resistor
AX5202. I couldn't find the 40P IC holder. I just used a locking holder
battery because the holder takes up space. I put it on the back.
 
 
 
The thickness of the board is 1.2. You can choose the color. Douka host, card The slot is narrow, the cassette insertion position is shortened by 2mm,
automatic wiring, no copper laying, that’s all for now.