[Apr/01/97]

                  FROGGER -SEGA / GREMLIN Board
                  -----------------------------

These roms were taken directly off an original SEGA / GREMLIN frogger PCB
and differ slightly from the american version ( less help ).

NOTE: Rom IC8 is not on this board ( slot present but not populated ) -
presumably, it held the extra 'help' stuff on the american version.

GMW 21/05/96

NOTE:

To retain compatability with mame etc, rom IC7 has been copied to IC8.

Doing an fc /b on these should show them to be the identical.

Dips are as follows:

1=F Infinite N=7 lives N=5 lives N=3 lives
2=F Lives    F         F         N

3 F=Table Top N=Upright

4=F 1C/1P N=1C/1P Else 2C/1P ( not sure what I meant by this .... )
5=F       N

6=????????



[Jan/29/97]

Frogger (scramble)
------------------
This (pirate) version of Frogger was a conversion on a Scramble board set.

2K files are 2716
32 byte file was read as an 82S123 (the colour PROM)

Two ROM sockets on the video board were unpopulated. There were no changes made
to the video board, but the sound board has the following modifications:-

Lift pin  2 IC K4 (LS28)
Connect pin  2 IC K4 (LS28) to pin 13 IC E4 (LS42)

Lift pin 13 IC J4 (LS04)
Connect pin 13 IC J4 (LS04) to pin 11 IC H3 (LS08)

Lift pin  8 IC H3 (LS08)
Connect PAD  8 IC H3 (LS08) to pin  6 IC H3 (LS08)

Lift pin  5 IC J5 (LS04)
Connect pin  5 IC J5 (LS04) to pin  3 IC F5 (LS08)

Lift pin  3 IC A1 (LS04)
Connect pin  3 IC A1 (LS04) to pin 11 IC F5 (LS08)

Lift pin  9 IC C5 (2716)
Lift pin 10 IC C5 (2716)
Connect pin  9 IC C5 (2716) to pin 14 IC G5 (LS245)
Connect pin 10 IC C5 (2716) to pin 16 IC G5 (LS245)

Connect pin  8 IC 3D (AY-3-8910) to pin 10 IC 3D (AY-3-8910)

The 220R resistor connected to pin 1 of IC 1E (8255) has it's other leg
strapped to ground.

This conversion has been verified.



[Jul/23/2000]

Developers note:

Alternative Frogger set running on Scramble hardware




[MAME]

Frogger memory map (preliminary)

0000-3fff ROM
8000-87ff RAM
a800-abff Video RAM
b000-b0ff Object RAM
b000-b03f screen attributes
b040-b05f sprites
b060-b0ff unused?

read:
8800	  Watchdog Reset
e000	  IN0
e002	  IN1
e004	  IN2

*
 * IN0 (all bits are inverted)
 * bit 7 : COIN 1
 * bit 6 : COIN 2
 * bit 5 : LEFT player 1
 * bit 4 : RIGHT player 1
 * bit 3 : SHOOT 1 player 1
 * bit 2 : CREDIT
 * bit 1 : SHOOT 2 player 1
 * bit 0 : UP player 2 (TABLE only)
 *
*
 * IN1 (all bits are inverted)
 * bit 7 : START 1
 * bit 6 : START 2
 * bit 5 : LEFT player 2 (TABLE only)
 * bit 4 : RIGHT player 2 (TABLE only)
 * bit 3 : SHOOT 1 player 2 (TABLE only)
 * bit 2 : SHOOT 2 player 2 (TABLE only)
 * bit 1 :\ nr of lives
 * bit 0 :/ 00 = 3	01 = 5	10 = 7	11 = 256
*
 * IN2 (all bits are inverted)
 * bit 7 : unused
 * bit 6 : DOWN player 1
 * bit 5 : unused
 * bit 4 : UP player 1
 * bit 3 : COCKTAIL or UPRIGHT cabinet (0 = UPRIGHT)
 * bit 2 :\ coins per play
 * bit 1 :/
 * bit 0 : DOWN player 2 (TABLE only)
 *

write:
b808	  interrupt enable
b80c	  screen horizontal flip
b810	  screen vertical flip
b818	  coin counter 1
b81c	  coin counter 2
d000	  To AY-3-8910 port A (commands for the second Z80)
d002	  trigger interrupt on sound CPU


SOUND BOARD:
0000-17ff ROM
4000-43ff RAM

I/0 ports:
read:
40		8910 #1  read

write
40		8910 #1  write
80		8910 #1  control

interrupts:
interrupt mode 1 triggered by the main CPU

-

[Apr/11/2005]

Rana  

ROMs:
3x MCM2532C (fr1-fr2-fr3)
2x ID2716 (r1-r2)
3x TMS 2516J (r6-r7-r8)  

NOTE:
Blister, no PCB
It's a clone of "Frogger"  

Dumped 21/05/2005  

-

[Nov/06/2005]

Rana sanzio  
 
ROMs:
3x TMS2532JL (FR1, FR2, FR3)
4x AM4716 (CR1, CR2, S(6)1, S(7)2)
1x TMS2516 (S(8)3)  

NOTE:
Blister, no PCB
It's a clone of "Frogger"   
 
Dumped 06/11/2005  

-