NEO-ZMC2: Difference between revisions

Revision as of 23:57, 27 June 2012

NEO-ZMC and PRO-CT0 in one package. The PRO-CT0 is a network of multiplexers (32-bit C ROM bus to two 4 bpp pixel outputs).

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

OpenOffice Draw file: File:Neo-zmc2.odg

NEO-ZMC part:

"SORD0" = SDRD0

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.
LOAD: Latch C ROM data (on rising edge ?).
EVEN: Swap A/B pixels.

Outpus:

H: Input, when high, reverse bit order of pixels (used for sprites horizontal flipping)

@@ Line 1: / Line 1: @@
 [[File:mvs_zmc2.jpg|right|thumb|NEO-ZMC2 chip found on a 1FZS MVS board.]]
-[[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 [[sprite graphics format|4 bpp]] pixel outputs).
+[[NEO-ZMC]] and [[PRO-CT0]] in one package. The PRO-CT0 is a network of multiplexers (32-bit [[C ROM]] bus to two [[sprite graphics format|4 bpp]] pixel outputs).
 Found in second revision MVS boards (for the PRO-CT0 logic only) and AES carts.
@@ Line 16: / Line 16: @@
 "SORD0" = SDRD0
-PRO-CT0 part:
+PRO-CT0 part, inputs:
-*12M: Input, 12MHz clock, outputs next pixel on falling edge
+*12M: 12MHz clock, outputs next pixel on falling edge.
-*GAD0~GAD3: Outputs, pixel A color data
+*C0~C31: C ROM data bus (2*16 bits). Gives all the pixel data needed for a 8 pixel line.
-*GBD0~GBD3: Outputs, pixel B color data
+*LOAD: Latch C ROM data (on rising edge ?).
-*LOAD: Input, latch C ROM data (on rising edge ?)
+*EVEN: Swap A/B pixels.
-*C0~C31: Inputs, C ROM data bus (2*16 bits). Gives all the pixel data needed for a 8 pixel line.
+Outpus:
+*DOTA: High when pixel A is opaque (color > 0)
+*DOTB: High when pixel B is opaque (color > 0)
+*GAD0~GAD3: Pixel A color data
+*GBD0~GBD3: Pixel B color data
 *H: Input, when high, reverse bit order of pixels (used for [[sprites]] horizontal flipping)
-*DOTA: Output, high when pixel A is opaque
-*DOTB: Output, high when pixel B is opaque
 [[Category:Chips]]