Free Kick (bootleg set 4)

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EMU Infos
dumper ANY
date 06/12/2012
emulator
dev
PCB Infos
name 1079
description Free Kick (bootleg set 4)
year 1987
manufacturer

Contents

Technical references

CPUs

QTY Type clock position function
2x P8255A 4a,2b Programmable Peripheral Interface
1x Z8400AB1-Z80ACPU piggyback 8-bit Microprocessor - main
4x 76489 9n,9p,9q,9s Digital Complex Sound Generator - sound
1x LM324N 9c Quad Operational Amplifier - sound
1x oscillator unmarked 10s

ROMs

QTY Type position status
7x 27256 1-7 dumped
1x 27512 15 dumped
2x N82S129N 8h,8j not dumped yet
4x D74S287N 7h,7j,7k,8k not dumped yet

RAMs

QTY Type position
4x MCM2018 4e,4l,4m,4q
1x TMM2063P-15 piggyback

PLDs

QTY Type position status
3x PAL16L8 0q,0s,piggyback read protected

Others

1x 28x2 JAMMA edge connector
1x trimmer (volume) (10b)
3x 8x2 switches DIP (6a,6b,6c)

Notes

Free Kick hardware
1 is sound
2-7 is gfx
15 is cpu


update 20130917: mail from Charles McDonald:
Another one! It feels like Christmas now.

This is nearly identical to Kevin's set, even the same NOP patches,
other than the external memory at D000-FFFF which shouldn't be
factored in. That memory is completely different since they dumped the
running game at a different point in time. Only 0000-CFFF corresponds
to the original game data, but the bootleggers in each case were lazy
and dumped all 64K like with other bootlegs.

The only differences to the game program/data area are:

119B -> LD A,2 changed to LD A,5
192C -> LD A,2 changed to LD A,5
4000/8000/8020 : Small changes in data

It's hard to say if these are real changes or just bad bits because
the values differ by a few bits in most cases.

Either these dumps (yours and Kevin's) are from the same version of
the game, and one (which one?) has a few bad bits which was the fault
of the bootleggers. Or, one is a very slight change to the other.

I have the feeling given the volatile nature of the RAM in the
original game modules, there will be a lot of bootlegs with a small
number of changes like this. Just a few bits here and there that are
different.

The daughterboard on your set is really cool, they went to some
trouble to recreate the hardware inside the original module.

Regards,

Charles

Files

1079

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