0.99u2 [Tomasz Slanina]
WIP:
- 0.173: Cleaned up and identified I/O chip as 6821 PIA [Dirk Best]. Fixed maincpu rom loading. Changed description to 'Attack UFO'.
- 0.150: Curt Coder fixed MOS6560 warning (if (m_tone1samples == 0)).
- 0.148u5: hap fixed missing MOS656X sound in Attack Ufo.
- 0.147: Refactored MOS6560 interface to use DEVCB. Refactored VIC to a modern device (sound\mos6560.c). Refactored to use an RGB32 bitmap [Curt Coder]. Removed not needed includes [Miodrag Milanovic]. Replaced 'MOS 6560 / 6561 VIC' sound with MOS656X (1022727 Hz).
- 0.136u4: Fabio Priuli imported MOS6560 device emulation from MESS for Attack Ufo and removed the existent custom audio/video emulation. Added also driver_data struct and save states to Attack Ufo. Replaced 'Attack Ufo Custom' sound with 'MOS 6560 / 6561 VIC'.
- 0.134u3: Stephane Humbert fixed dipswitches for Attack Ufo. Replaced 'Unknown' dipswitches with 'Bonus Life' and 'Unused'.
- 0.129u4: Changed 'Custom' sound to 'Attack Ufo Custom'.
- 0.116u1: Changed palettesize to 16 colors.
- 0.116: Changed palettesize from 16 to 5 colors.
- 0.112u4: Cleaned up attckufo driver, making it perform like a 1MHz 6502 game once again [Aaron Giles].
- 0.99u2: Tomasz Slanina added 'Attack Ufo' (Ryoto Electric Co. 1980).
- 15th August 2005: Tomasz Slanina - Game is running on VIC6560 - like chip MOS6560, with few changes in the internal structure. Video, colors and sounds are emulated now (based on PeT's 6560 code from MESS).
- 7th August 2005: Tomasz Slanina - Weird (and probably rare) invaders clone from 1980. The main CPU is a 6502. Gfx is tilebased (128 dynamic tiles in RAM + 128 static in ROM). Screen size is strange - 176x184 (22x23 8*8 tiles). Colors are unknown. Sound hw is unknown too, possible discrete.
Recommended Games (Space Invaders):
Space Invaders
Space Invaders Part II
Return of the Invaders
Space Invaders DX
Super Space Invaders '91
Space Invaders '95: The Attack Of Lunar Loonies
Space Invaders Anniversary
Space Invaders / Qix Silver Anniversary Edition
Space Invaders Multigame (M8.03D)
Space Invaders II
Space Stranger
The Invaders
Alpha Fighter / Head On
Invinco
Invinco / Deep Scan
Invinco / Head On 2
Rolling Crash / Moon Base
Space Attack
Space Attack / Head On
Space Fever
Space Fever High Splitter
Space Fighter Mark II
Space Guerrilla
Space King 2
Beam Invader
Fast Invaders
IPM Invader
Rotary Fighter
Shuttle Invader
Attack UFO
Space Intruder
Alien Invaders
Galaxy Games StarPak 3 (Astro Blast)
Arcade Video game published 39 years ago:
Attack UFO (c) 1980 Ryoto Electric.
- TECHNICAL -
Main CPU : MOS Technology M6502 (@ 1.022727 Mhz)
Sound Chips : Custom (@ 1.022727 Mhz)
Screen orientation : Vertical
Video resolution : 176 x 184 pixels
Screen refresh : 60.00 Hz
Palette colors : 16
Players : 2
Control : 2-way Joystick
Buttons : 1
- TRIVIA -
UFO stands for 'Unidentified Flying Object'.
- CONTRIBUTE -
Edit this entry: https://www.arcade-history.com/?&page=detail&id=4516&o=2