Back Fire (Tecmo, bootleg)

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EMU Infos
dumper Tirino73
dump date 14/07/2009
emulator MAME 0.133
dev Tirino73, David Haywood
PCB Infos
name backfirt
description Back Fire (Tecmo, bootleg)
year 1988
manufacturer Tecmo


Technical references


QTY Type clock position function
1x Z80A 8-bit Microprocessor - main
1x Z80A 8-bit Microprocessor - sound (*)
1x YM3812 FM Operator Type-L II (OPL II) - sound
1x YM3014 D/A Converter (DAC) - sound
1x oscillator 24 MHz
1x oscillator 8 MHz


QTY Type position status
2x 27256 B2, B3 dumped
14x 27512 B4 - B17 dumped


QTY Type position
1x 6264 main on CPU board
1x 6116 sound on sub board
1x 6116 sound on CPU board
3x 2114 sound on sub board
3x 6116 sound on video board
20x 4164 main on video board


QTY Type position status



This japanese romset comes from a bootleg pcb.Rare than the original.
* Note:The sound cpu was protected inside a epoxy block fit on a 40 pin socket in reverse of cpu board (solder side).By dissolving resin the small sub pcb contains Z80A (identified by pins),76c28 (6116),a 74ls00 and 74ls138.

This game uses 8way joystick and one button (shot).Hardware accept inputs by other two buttons as the jamma standard,but their function is the same of first one.

-Dip switch settings:

SW 1-2 coin slot 1 (max 9 credits)
off off 1 coin 1 play
on  off 1 coin 2 play
off on  1 coin 3 play
on  on  1 coin 6 play
SW 3-4 coin slot 2 (max 99 credits)
off off 1 coin 1 play
on  off 2 coin 1 play
off on  1 coin 2 play
on  on  1 coin 3 play
SW 7 table-upright
off table
on  upright
SW 5-6-8 not used
SW 1-2-3 extend
off off off 50,200,500k
on  off off 100,300,800k
off on  off 50,200k
on  on  off 100,300k
off off on 50k
on  off on 100k
off on  on 200k
on  on  on nothing
SW 4-5-6 difficulty
off off off normal
on  off off  hard 1
off on  off    |
on  on  off    |
off off on     |
on  off on     |
off on  on     |
on  on  on   hardest
SW 7 continue
off yes
on  no
SW 8 invincibility (test mode)** see note
off no -normal game
on  yes

** It is not total, in normal waves you die by collision with bosses shot,and with walls and enemies in cavern waves and final base. In normal waves,you cannot get special weapon objects too.
Demo sound is always active by default.Dip switch are good by testing.
Dip switch changes apart for coin settings are immediately effective (by next play and during play),no need of turn off/on power.



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