NEO-ZMC2: Difference between revisions

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[[File:mvs_zmc2.jpg|right|thumb|NEO-ZMC2 chip found on a 1FZS MVS board.]]
{{ChipInfo
|picture=mvs_zmc2.jpg
|pkg=QFP80R
|manu=fujitsu
|date=1994 ?
|gates=
|used_on={{PCB|MV1FZS}} [[Cartridges]]...
}}


[[NEO-ZMC]] and [[PRO-CT0]] in one package. The PRO-CT0 is a network of shift registers and multiplexers (32-bit [[C ROM]] bus to two [[Graphics formats|4 bpp]] pixel outputs).
{{Chipname|NEO-ZMC}} and {{Chipname|PRO-CT0}} in one package.


Found in second revision MVS boards (for the PRO-CT0 logic only) and AES carts.
Can address up to 4MiB of [[M1 ROM]].


== Pinout ==
Found in second revision [[MVS hardware|MVS]] boards (for the PRO-CT0 logic only), and AES cartridges.


[[File:Neo-zmc2 pinout.png]]
=Pinout=


*A0,A1,A8~A15: [[Z80]] address bus (NEO-ZMC part)
{{Pinout|NEO-ZMC2|640px}}
*MA11~M21: M ROM address outputs
 
*12M: 12MHz clock (from [[NEO-D0]])
NEO-ZMC part:
*GAD0~GAD3: Pixel A color data
*SDA0,SDA1,SDA8~SDA15: [[Z80]] address bus  
*GBD0~GBD3: Pixel B color data
*MA11~MA21: M ROM address outputs  
*C0~C31: Cartridge connections to C ROMs
 
PRO-CT0 part, inputs:
*12M: 12MHz clock, outputs next pixel on falling edge.
*C0~C31: C ROM data bus (2*16 bits). Gives all the pixel data needed for a 8 pixel line.
*H: When high, reverse bit order of pixels shifted out (used for [[sprites]] horizontal flipping)
*EVEN: Swap A/B pixels.
*LOAD: Latch C ROM data on rising edge of 12M.
Outputs:
*DOTA: High when pixel A is opaque (color > 0)
*DOTB: High when pixel B is opaque (color > 0)
*GAD0~GAD3: Pixel A color index
*GBD0~GBD3: Pixel B color index


[[Category:Chips]]
[[Category:Chips]]

Latest revision as of 18:31, 17 January 2024

Package QFP80R
Manufacturer
First use 1994 ?
Used on MV1FZS Cartridges...

NEO-ZMC and PRO-CT0 in one package.

Can address up to 4MiB of M1 ROM.

Found in second revision MVS boards (for the PRO-CT0 logic only), and AES cartridges.

Pinout


Edit this pinout

NEO-ZMC part:

  • SDA0,SDA1,SDA8~SDA15: Z80 address bus
  • MA11~MA21: M ROM address outputs

PRO-CT0 part, inputs:

  • 12M: 12MHz clock, outputs next pixel on falling edge.
  • C0~C31: C ROM data bus (2*16 bits). Gives all the pixel data needed for a 8 pixel line.
  • H: When high, reverse bit order of pixels shifted out (used for sprites horizontal flipping)
  • EVEN: Swap A/B pixels.
  • LOAD: Latch C ROM data on rising edge of 12M.

Outputs:

  • DOTA: High when pixel A is opaque (color > 0)
  • DOTB: High when pixel B is opaque (color > 0)
  • GAD0~GAD3: Pixel A color index
  • GBD0~GBD3: Pixel B color index