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Picture Reference Description Found in Pinout
Mvs lspc-a0.jpg
LSPC-A0 First generation graphics chip Some AES, some MVS
LSPC-A0 pinout.png
Aes lspc2a2.jpg
LSPC2-A2 Second generation graphics chip Some AES, some MVS
LSPC2-A2 pinout.png
LSPC2-A3 Revision of the second generation graphics chip Some MVS
LSPC2-A2 pinout.png
NEO-244 Some MVS
NEO-253 Quint 74HC253, 4-to-1 multiplexers Some MVS
Neo-253 pinout.png
NEO-257 Quad 74HC257, 2-to-1 multiplexers Some MVS
Neo-257 L4 pinout.png
Crt 273.jpg
NEO-273 C and S ROM address latches Cartridges
NEO-273 pinout.png
Aes b1.jpg
NEO-B1 Second generation graphics chip
  • Sprite and FIX multiplexer
  • Line buffers
  • Palette arbiter
Some AES, some MVS
NEO-B1 pinout.png
Cd2 buf.jpg
NEO-BUF Dual 8-bit bidirectional buffer CD1, CD2, some late MVS
NEO-BUF pinout.png
Aes c1.jpg
  • Address decoder
  • Joystick inputs
  • Z80 interface
Some AES, some MVS
NEO-C1 pinout.png
Aes d0.jpg
  • Audio subsystem controller
  • Output port
  • Memory card bankswitching
All AES ?, some MVS
NEO-D0 pinout.png
Crt cmc.jpg
  • NEO-273 logic
  • NEO-ZMC logic
  • C ROM decryption
  • C/S ROM multiplexer
  • S ROM bankswitching
  • M ROM decryption (NEOCMC50 only)
  • M ROM bankswitching
Some cartridges
Neocmc 7050 7042 pinout.png
NEO-DCR pinout.png
Aes e0.jpg
  • Vector table swapping
  • Buffer/driver
Some AES, some MVS
NEO-E0 pinout.png
Mvs f0.jpg
  • Calendar access
  • Dip/cab switches, coin counters
  • LED marquee outputs
  • Slot selection
Some MVS
NEO-F0 pinout.png
Aes g0.jpg

Quad 245 bidirectional buffer.

  • Palette data buffer
  • Memory card data buffer
  • 68k data bus buffer
All AES, some MVS ?
NEO-G0 pinout.png
Cd2 grc.jpg
NEO-GRC Graphics chip All CD1, all CD2
Neo-grc pinout.png
NEO-GRC2-F (Fujitsu) Graphics chip All CDZ ?, Some MVS
Neo-grc2 pinout.png
Brd grz.jpg
NEO-GRZ (Fujitsu) All-in-one GPU ROM-only
NEO-I0 Multi-purpose MVS specific chip.
  • SFIX ROM address latch
  • Coin counter and lockout outputs
Some MVS
NEO-I0 pinout.png
Cd2 mga.jpg
CD unit interface, latches, address decoding ? All CD1, all CD2, all CDZ, some MVS
Neo-mga pinout.png
Cd2 ofc.jpg
NEO-OFC (Fujitsu) Graphics chip All CD1, all CD2
Brd pcm2.jpg
NEO-PCM2 (Fujitsu)
  • PCM
  • P ROM decoding, bankswitching and decryption
ROM-only boards
Neo-pcm2 pinout.png
  • Joypad I/O
  • Z80 address and port decoding
  • 68k/Z80 communication latches and interrupt generation
Some MVS, All Neo Prints
NEO-SDR pinout.png
Cd2 sft.jpg
NEO-SFT (Fujitsu) Graphics related All CD1, all CD2
Cd2 sud.jpg
NEO-SUD Z80 subsystem controler All CD1, all CD2
Cd2 voc.jpg
NEO-VOC (Yamaha) PCM memory handler All CD1, all CD2
Cd2 ysa.jpg
NEO-YSA (Yamaha) Audio subsystem chip Some CD2
Brd ysa2.jpg
NEO-YSA2 (Yamaha) Complete audio subsystem chip and controller inputs
  • Embedded Z80+RAM
  • Embedded YM2610
Some MVS, CDZ, All ROM-only
NEO-YSA2 pinout.png
Crt zmc.jpg
NEO-ZMC Z80 Memory Controller Cartridges
NEO-ZMC pinout.png
Mvs zmc2.jpg
  • Z80 Memory Controller
  • Sprite tile serializer
AES carts, some MVS
NEO-ZMC2 pinout.png
Crt pcm.jpg
  • ADPCM bus latches
  • V ROM multiplexer
PCM pinout.png

Neo Print GPU.

Mvs pro-b0.jpg
PRO-B0 First generation
  • Palette arbiter
  • Z80 latch
Some AES, some MVS
PRO-B0 pinout.png
Mvs pro-c0.jpg
PRO-C0 First generation
  • Address decoder
  • Glue
  • Line buffer
  • Palette arbiter
Some AES, some MVS
PRO-C0 pinout.png
Mvs pro-ct0.jpg
PRO-CT0 C ROM character serializer and multiplexer Some AES carts, some MVS
Pro-ct0 pinout.png
Brd pvc.jpg
NEO-PVC (Fujitsu) P ROM decryption chip
Crt sma.jpg
NEO-SMA P ROM decryption chip

Other chips

Picture Reference Description Found in
Aes 68k.jpg
68HC000 (Toshiba DIP64) 16bit CPU All Some
Cd2 68k.jpg
68HC000 (Motorola PLCC68) Some All All All
Aes cxa1145.jpg
Sony CXA1145 RGB encoder All
Cd2 cxa1645.jpg
Sony CXA1645 ? All ?
Crt hd6301.jpg
Hitachi HD6301 (DIP40) Microcontroller Multiplayer cartridges
Cd2 lc78815.jpg
Sanyo LC78815 Stereo DAC ? All
Cd2 lc89515.jpg
Sanyo LC89515 CD host and error corrector All All ?
Cd2 lc8953.jpg
Sanyo LC8953 PUPPET All Some ?
Cd2 lc98000.jpg
Sanyo LC98000 PUPPET replacement Some ?
Mvs upd4990.jpg
NEC UPD4990 Real Time Clock All
Cd2 ym2610.jpg
Yamaha YM2610 Sound synthesizer All All All Some
Aes ym3016.jpg
Yamaha YM3016 Audio DAC All All All Some
Aes z80.jpg
Zilog z80 (DIP40) 8bit CPU All Some
Cd2 z80.jpg
Toshiba z80 (SOIC) Some All All All

Memory chips

Picture Reference Description Found in
Aes lo.jpg
LO Shrink lookup ROM All systems
Mvs sp-s2.jpg
SP-S2 MVS System ROM MVS systems
Mvs sm1.jpg
SM1 Embedded sound driver ROM
Mvs sfix.jpg
SFIX ROM Embedded Fix ROM
Aes biosep0.jpg
NEO-EP0 AES System ROM AES systems
Picture needed TOP-SP1-1 CD2 System ROM Top loading CD systems (LC8953 versions)
Picture needed TOP-SP1-2 CD2 System ROM Top loading CD systems (LC98000 versions)
Cd1 front-sp1.jpg
FRONT-SP1 CD1 System ROM Front loading CD systems