MAWS - showing resource: gatsbee

title	Gatsbee
set name	gatsbee
manufacturer	hack
year	1984
genre	Shooter (hof)
category	Shooter / Gallery (hof)
driver status	imperfect
driver source	galaga.c
snapshots	MW: in game \| parent / CT: in game \| title \| parent / Mr. Do: parent / PS: in game \| parent zoom
rating	72.1% after 37 votes
parent	Galaga (Namco rev. B)
other clones	Galaga (Midway set 1 with fast shoot hack) Galaga (Midway set 1) Galaga (Midway set 2) Galaga (Namco) Gallag

colour emulation	good
palette	576
display type	raster
orientation	vertical
resolution	224x288
frequency	60.606060Hz

sound emulation	imperfect
channels	mono

players	2
nplayers	2P alt
controls	8 way joystick
buttons	1
coin slots	2

cpu	Z80 @ 3.072MHz
cpu	Z80 @ 3.072MHz
cpu	Z80 @ 3.072MHz
cpu	Z80 @ 3.072MHz
audio	Namco @ 0.096MHz

version added

.068

last change(s)

.079u1 .070

roms

name	size	crc	set	sha1
1.4b	4096	9fb8e28b	gatsbee	7171e3fb37b0d6cc8f7a023c1775080d5986de99
2.4c	4096	bf6cb840	gatsbee	5763140d32d35a38cdcb49e6de1fd5b07a9e8cc2
3.4d	4096	3604e2dd	gatsbee	1736cf8497f7ac28e92ca94fa137c144353dc192
4.4e	4096	bf9f613b	gatsbee	41c852fc77f0f35bf48a5b81a19234ed99871c89
gg1-5	4096	3102fccd	gatsbee	d29b68d6aab3217fa2106b3507b9273ff3f927bf
gg1-7	4096	8995088d	gatsbee	d6cb439de0718826d1a0363c9d77de8740b18ecf
gallag.6	4096	001b70bc	gatsbee	b465eee91e75257b7b049d49c0064ab5fd66c576
8.5r	8192	b324f650	gatsbee	7bcb254f7cf03bd84291b9fdc27b8962b3e12aa4
9.6a	4096	22e339d5	gatsbee	9ac2887ede802d28daa4ad0a0a54bcf7b1155a2e
10.7a	4096	60dcf940	gatsbee	6530aa5b4afef4a8422ece76a93d0c5b1d93355e
prom-5.5n	32	54603c6b	galaga	1a6dea13b4af155d9cb5b999a75d4f1eb9c71346
prom-4.2n	256	59b6edab	galaga	0281de86c236c88739297ff712e0a4f5c8bf8ab9
prom-3.1c	256	4a04bb6b	galaga	cdd4bc1013f5c11984fdc4fd10e2d2e27120c1e5
prom-1.1d	256	7a2815b4	galaga	085ada18c498fdb18ecedef0ea8fe9217edb7b46
prom-2.5c	256	77245b66	galaga	0c4d0bee858b97632411c440bea6948a74759746

cabinet	galaga.png galaga.png
marquee	galaga.png
control panel	galaga.png
flyer	galaga.png
PCB	galaga.png

info

0.79u1 [Nicola Salmoria]

0.21 [Nicola Salmoria, Martin Scragg]

TEST MODE:

Set DIP SERVICE MODE = ON, press F3 and use movement & fire to change & hear sound effects.

NOTE:

The star line and pixel locations of the Galaga starfield pulled directly from a clocked stepping of the 05 starfield. The chip was clocked on a test rig with hblank and vblank simulated, each X & Y location of a star being recorded along with it's color value. Because the starfield begins generating stars at the point in time it's enabled the exact horizontal location of the stars on Galaga depends on the length of time of the POST for the original board. Two control bits determine which of two sets are displayed set 0 or 1 and simultaneously 2 or 3. There are 63 stars in each set, 126 displayed at any one time.

WIP:

0.127u3: Aaron Giles fixed locks up in Galaga (Cheat engine problem).
0.123u5: Zsolt Vasvari fixed the crash in Galaga caused by the slightly altered video timing.
0.119u3: David Haywood added the rom loading for rom 51xx.bin, which are dumped but not yet hooked up.
0.118u5: Changed palettesize to 576 colors.
0.112u2: Replaced 3x DAC sound with Discrete.
0.112u1: Replaced implementation of Namco 54xx sound chip with new MB8844 CPU core running the original embedded ROM code. Removed old sound core [Nicola Salmora, Ernesto Corvi, Guru]. Added MB88xx (256000 Hz) CPU4 with 1k rom and replaced Namco 54XX with 3x DAC sound.
0.107u4: Added new cpu2 rom to clone Galaga (Midway set 1 with fast shoot hack).
0.107u3: David Widel added clone Galaga (Midway set 1 with fast shoot hack).
0.100u3: Pierpaolo Prazzoli added missing vertical movement to clone Gatsbee.
0.94u5: James Rowan corrected Galaga and Bosconian starfields.
0.94u2: Derrick Renaud added proper watchdogs to Bosconian, Galaga, Pole Position and Xevious.
0.90u3: Derrick Renaud added proper filters to the Namco52 sample player of Bosconian, Galaga, Pole Position and Xevious. Adjusted relative effect volumes per schematics.
0.90u2: Derrick Renaud updated the Namco 54xx noise sound and added the R/C values to Bosconian, Galaga, Pole Position and Xevious.
0.89u5: Jarek Burczynski improved the Namco 54xx Noise Generator (Type A and B emulated, type C algo still unknown). Removed Samples sound and bang.wav sample.
0.79u1: Added Galaga (Namco rev. B) and clone Galaga (Midway set 2). Renamed (galaga) to (galagao). Galaga uses now better dumps of the PROMs, with the u [Nicola Salmoria]. Removed 'init.wav' sample. Removed Galaga (bootleg) (galagab2 - mix 'n match of ROMs from other sets), Galaga '84 (galaga84 - copyright/gfx change), Nebulous Bee (nebulbee - copyright/name change) and Galaga (fast shoot) (galagads - 1-byte hack to get fast shoot). Changed Z80 CPU1/2/3 clock speeds to 3072000 Hz and added Namco 54XX (1536000 Hz) sound.
0.70: Changed description of clone 'Catsbee' to 'Gatsbee'. Renamed (catsbee) to (gatsbee).
0.68: David Haywood added clone Catsbee (1984 Uchida).
25th April 2003: David Haywood added Catsbee to the Galaga driver.
14th April 2003: Guru - Catsbee (Uchida 1984) arrived from Taucher.
0.63: Added 'init.wav' to the samples.
25th November 2002: SUZ fixed the Galaga init sound.
30th June 2002: SUZ fixed a coin lockout bug in the Galaga driver, and added explosion sound to the startup.
6th October 2001: William Kucharski fixed the Galaga explosion sample code to play the sample during bootup as well.
0.53: Scott Brasington fixed Free Play mode in Galaga.
0.35RC1: Zsolt Vasvari added clone Nebulous Bee (hack 1984).
9th June 1999: Zsolt Vasvari added a Galaga hack called Nebulous Bee.
0.35b13: Valerio Verrando added clone Galaga '84 (hack 1984).
14th May 1999: Valerio Verrando added Galaga '84 to the Galaga driver.
5th March 1999: Aaron Giles has fixed more drivers to work with rotation handling (galaga, frogger, burger time and their clones).
12th February 1999: Juergen Buchmueller has made the ASM Z80 core even better. Speed improvements range from 25% (Galaga) to 45% (Tapper). It's still far from complete, and daisy-chaining doesn't work.
0.35b1: Added prom ($220 - unknown).
0.33b7: Removed Galaga (bootleg) and added clone Galaga (fast shoot). Renamed (galaga) to (galagamw) and (galaganm) to (galaga).
0.31: Marco Cassili added clone Galaga (bootleg). ehrhard@csd.de fixed double size sprites in Galaga when screen is flipped.
0.29: Martin Scragg fixed blinking in the Galaga starfield. Nicola supports rotation in Galaga and the attract mode of Galaga works correctly. And Valerio Verrando fixed also Galaga.
0.27: Added clones Galaga (Namco) and Gallag (bootleg Galaga). In Galaga, star scroll speed in levels > 32 should be correct now.
0.26a: Galaga has correct stars speed now.
0.25: Refixed the Galaga hiscore bug (it happened when syncing Mirko sources with Nicola's ones).
0.23: Mirko Buffoni fixed Galaga hiscore saving, which is now flawlessy supported!
0.21.5: Nicola fixed a bug in Memory addressing that caused Galaga to trash under DOS.
0.21: Nicola Salmoria added Galaga (Namco 1981) and Galaga (bootleg). The bootleg version use a Z80 that emulates custom I/O chips. Very special thanks to Martin Scragg that provided us crucial information on custom I/O chips. Issues: Explosions are implemented in a tricky way (reset game and you'll see!) and Hiscore support not ready yet.

LEVELS: 255 (endless)

Other Emulators:

CottAGE
HiVE
JEmu2
Retrocade
Sparcade
VAntAGE

Recommended Games (Galaxian):

Cosmic Alien

Cosmo

Galaxian

Destroyer

Mad Alien

Moon Cresta

Moon Quasar

Phoenix

Space Firebird

UniWar S

4 Fun in 1 (Galaxian)

Defend the Terra Attack on the Red UFO

Galaga

Galaga - Namco Classics Collection Vol.1

Galaga '88

Ghostmuncher Galaxian (bootleg)

Gaplus

Pisces

Cosmo Gang the Video

Space Bomber

Romset: 40 kb / 16 files / 23.5 zip

history

GATsBEe (c) 1984 Uchida.

- TECHNICAL -

Main CPU : (4x) Z80 (@ 3.072 Mhz)

Sound Chips : Namco 3-channel WSG, discrete circuitry

Screen orientation : Vertical

Video resolution : 224 x 288 pixels

Screen refresh : 60.61 Hz

Palette colors : 96

Players : 2

Control : 8-way joystick

Buttons : 1

- TRIVIA -

This game is a "Galaga" hack.

- SOURCES -

Game's rom.

Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=gatsbee&page=detail&id=937&o=2

resource links

view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
view in arcade-history.com
view in GameFAQs
view in KLOV
view in MamEnd
view in System16
view in The Arcade Flyer Archive
view in The Arcade Flyer Archive
view in VGMuseum Gamepics
view in VGMuseum Gamepics
view in VGMuseum Gamepics
view in VGMuseum Gamepics

cheats

code	comments
00000000:9820:00000006:FFFFFFFF	Infinite Lives
21800000:06E4:00000018:FFFFFFFF	Invincibility
20800300:3C2D:000000FF:FFFFFFFF	Select Starting Stage:Note the game crashes after Stage 255
20A10000:0185:003C21CD:FFFFFFFF	Select Starting Stage (2/7)
20B10000:3C21:FE98213A:FFFFFFFF	Select Starting Stage (3/7):0185: CD 21 3C call $3C21 (changed from ld hl,$9821)
20B10000:3C25:21042800:FFFFFFFF	Select Starting Stage (4/7):3C21: 3A 21 98 ld a,($9821) / 3C24: FE 00 cp $00
20B10000:3C29:3EC99821:FFFFFFFF	Select Starting Stage (5/7):3C26: 28 04 jr z,$3C2C / 3C28: 21 21 98 ld hl,$9821
20B10000:3C2E:18982132:FFFFFFFF	Select Starting Stage (6/7):3C2B: C9 ret / 3C2C: 3E xx ld a,$xx
20810000:3C32:000000F5:FFFFFFFF	Select Starting Stage (7/7):3C2E: 32 21 98 ld ($9821),a / 3C31: 18 F5 jr $3C28
21800000:070D:0000000D:FFFFFFFF	Fast Shoot
00000000:9288:00000028:FFFFFFFF	Perfect Challenge Stages
00000000:9825:00000000:FFFFFFFF	All Challenge Stages
00000000:9825:00000001:FFFFFFFF	No Challenge Stages
00300000:9368:00000000:FFFFFFFF	Aliens don't fire
00310000:936C:00000000:FFFFFFFF	Aliens don't fire (2/2)
02100000:99B6:00000000:00001515	Auto Fire:Turn it OFF on the Name Entry screen