NEO-GRC2: Difference between revisions

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Second version of the all-in-one [[VDC]] made by '''F'''ujitsu. Used at least on the [[MV1B]] MVS board.
{{ChipInfo
|picture=Neo-grc2-f.jpg
|pkg=QFP208
|manu=fujitsu
|date=1995 ?
|gates=
|used_on={{PCB|MV1B}}
}}


Has embedded fast [[VRAM]], which means that Video RAM errors at or above $8000 on boards using this chip are bad news.
Second version of the all-in-one [[VDC]].
 
Has embedded fast [[VRAM]], which means that [[VIDEO RAM ERROR]]s at or above $8000 on boards using this chip are bad news.
 
Also has embedded [[palette RAM]], so [[COLOR RAM ERROR]]s are equally bad news.


Slow VRAM is still external.
Slow VRAM is still external.


Also has embedded [[palette RAM]], so palette RAM errors are equally bad news.
On Mv1b, pin 204 is 68clk


[[Palette RAM]] is still external.
=Pinout=


=Pinout=
[[File:Neo-grc2_pinout.png|800px]]


TODO
[[File:Neo-grc2.odg]]


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

Latest revision as of 22:51, 3 February 2024

Package QFP208
Manufacturer
First use 1995 ?
Used on MV1B

Second version of the all-in-one VDC.

Has embedded fast VRAM, which means that VIDEO RAM ERRORs at or above $8000 on boards using this chip are bad news.

Also has embedded palette RAM, so COLOR RAM ERRORs are equally bad news.

Slow VRAM is still external.

On Mv1b, pin 204 is 68clk

Pinout

File:Neo-grc2.odg