NEO-F0

MVS specific chip.


 * RTC interface
 * Hardware DIPs and cab switches reading
 * Coin counters interface
 * LEDs and marquee outputs
 * Slot selection for multi-slot boards

Note: is used to gate the SLOT* outputs.

=Pinout=

=Signals=

CPU

 * A4~A7: 68k address bus
 * D0~D7: 68k data bus

RTC
4990*: uPD4990 RTC interface

IN3 : Output IN300~IN304 to D0~D4 and CALTP/CALDOUT to D6/D7 (read $320001). D5 is IN00 ?

I/O

 * Output to D0~D7 depending on state of A7:
 * A7 low: output dipswitch states DIP00~DIP07 (read $300001)
 * A7 high: output IN01 to D7 (test switch) and TYPE to D6 (read $300081)

Slot select

 * SLOTA~SLOTC: binary slot selection
 * SLOT0~SLOT5: decoded slot selection (active low)

=Connections= MV1F:
 * IN00: Ground
 * IN01: Test switch
 * IN300: P1 Coin switch
 * IN301: P2 Coin switch
 * IN302: Service switch
 * IN303/IN304: VCC

MV2B:
 * IN303: NEO-E0 H6 50 (BNK0)
 * IN304: 3 of PRO-C0, NEO-E0 H6 48