Hyper Neo Geo 64

The system was first announced in late 1995, and planned for release in late 1996.{{cite magazine|last=Webb|first=Marcus|date=December 1995|title=Arcadia|url=https://archive.org/details/nextgen-issue-012/page/n29/mode/2up|magazine=Next Generation|publisher=Imagine Media|issue=12|page=28}} It was officially unveiled at the February 1997 AOU show, though all that was demonstrated at the show was a videotape containing a few seconds of footage of Samurai Shodown 64, which SNK announced would be the first game for the system.{{cite magazine|date=April 1997|title=AOU|url=https://retrocdn.net/images/b/b2/EGM_US_093.pdf|magazine=Electronic Gaming Monthly|publisher=Ziff Davis|issue=93|page=79}} By mid-1997 test units were on display in Japan.{{cite magazine |title=In the Studio |magazine=Next Generation|issue=33 |publisher=Imagine Media |date=September 1997|page=[https://archive.org/details/NEXT_Generation_33/page/n25 24] |url=https://archive.org/details/NEXT_Generation_33}}

The system was released, only in arcade form, in September 1997, featuring a custom 64-bit RISC processor, 4 megabytes of program memory, 64 megabytes of 3D and texture memory, and 128 megabytes of memory for 2D characters and backgrounds.{{Cite magazine |date=1997 |title=SNK rolls out 64-bit hardware |magazine=Edge Magazine |page=12 |issue=48}} The first title released for the system was Road's Edge, with Samurai Shodown 64 following soon after. Neither was particularly well received. The system was a failure{{Cite web |last=Extension |first=Time |date=2022-07-14 |title=Fighting Game Fan Goes To Insane Lengths To Play Obscure Neo Geo 64 Game |url=https://www.timeextension.com/news/2022/07/fighting-game-fan-goes-to-insane-lengths-to-play-obscure-neo-geo-64-game |access-date=2024-09-04 |website=Time Extension |language=en-GB}} and by 1999 was discontinued, with only seven games released in total. SNK resumed releasing games on their older Neo Geo system.{{Cite web |title=The History of SNK |url=https://www.gamespot.com/articles/the-history-of-snk/1100-6089278/ |access-date=2024-09-04 |website=GameSpot |language=en-US}}

• Processors:
• CPU #1 (main): 100 MHz NEC VR4300 (64-bit MIPS III)
• CPU #2 (auxiliary, handles audio I/O): NEC V53@16 MHz 16-bit microcontroller (V33 superset)
• CPU #3 (auxiliary, handles communications I/O): KL5C80A12CFP@12.5 MHz 8-bit microcontroller (Z80 compatible)
• Memory layout:
• 0x00000000..0x00FFFFFF: mainboard RAM (16 MiB)
• 0x04000000..0x05FFFFFF: cartridge RAM (16 MiB)
• 0x1FC00000..0x1FC7FFFF: ROM (512 KiB)
• Cartridge ROM mapping is variable.
• Sound chip:
• L7A1045 L6028 DSP-A: 32-channel PCM audio, with maximum sampling frequency of 44.1 kHz (CD-quality) and 32 MB of sample RAM{{Cite web |title=mame/src/devices/sound/l7a1045_l6028_dsp_a.cpp at master · mamedev/mame |url=https://github.com/mamedev/mame/blob/master/src/devices/sound/l7a1045_l6028_dsp_a.cpp |access-date=2024-11-14 |website=GitHub |language=en}}
• Display:
• Color palette: 16.7 million
• Maximum onscreen color palette: 4,096
• 3D branch: 96 MB vertex memory, 16 MB maximum texture memory{{cite magazine|date=October 1997|title=Hyper Neo Geo 64|url=https://archive.org/details/NEXT_Generation_34/page/n21/mode/2up|magazine=Next Generation|publisher=Imagine Media|issue=34|page=21}}
• 2D sprite branch: 60 frames per second animation, 128 MB character memory
• Main functions: scaling, montage, chain, mosaic, mesh, action, up/down, right/left reverse
• Sprites per frame: 1,536 sprites{{cite magazine |last1=Webb |first1=Marcus |title=Arcadia: SNK to combine system and dedicated games |magazine=Next Generation |date=18 November 1997 |issue=36 (December 1997) |page=33 |url=https://retrocdn.net/images/8/84/NextGeneration_US_36.pdf#page=35}}
• 2D scrolling branch: Up to 4 game planes, 64 MB character memory
• Main functions: scaling, revolution, morphing; horizontal/vertical screen partitioning and line scrolling

• Aleck 64

{{reflist}}

• [http://www.uvlist.net/groups/info/hyperneogeo64-hw Hyper Neo Geo 64 games and statistics]

{{SNK}}

Category:Arcade system boards

Category:Neo Geo