NEO-F0



MVS specific chip.

Handles the UPD4990 calendar access, dipswitches, cab switches (test, service...), coin counters, LED marquee outputs and slot selection signals for multi-slot boards.

SYSTEMB is used as an input to gate the SLOT* pins.

To do: D0~7 are bidir.

=Pinout=

OpenOffice Draw file:


 * A4~A7: 68k address bus
 * D0~D7: 68k data bus
 * 4990*: uPD4990 RTC interface
 * DATA0~DATA7: LED marquee latch data output
 * DIP00~DIP07: Dipswitch inputs
 * IN3: Output IN300~IN304 to D0~D4 and CALTP/CALDOUT to D6/D7 (read $320001)
 * DIPRD: 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)
 * BITWD0: writes to $3800x1 region...(fill in)
 * SLOTA~SLOTC: binary slot selection
 * SLOT0~SLOT5: decoded slot selection

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

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