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}}
}}
 
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.
Has embedded fast [[VRAM]], which means that [[VIDEO RAM ERROR]]s at or above $8000 on boards using this chip are bad news.
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Slow VRAM is still external.
Slow VRAM is still external.
On Mv1b, pin 204 is 68clk


=Pinout=
=Pinout=


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