NEO-CMC: Difference between revisions

Revision as of 00:29, 27 March 2011

Most infos from [MAME:neocrypt.c]

C and (merged) S ROM banking and decryption chips found on CHA cartridge boards, in two (?) versions:

"CMC50"

Also found on ROM-only arcade boards, without the "NEO-CMC" marking.

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-[[File:crt_cmc.jpg|thumb|NEO-CMC chip on a MVS [[cartridges|cartridge]]. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]]
+[[File:crt_cmc.jpg|thumb|"CMC42" chip on a MVS [[cartridges|cartridge]]. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]]
-Huge banking (and decrypting ?) chip found on CHA cartridge boards using more than 2 [[C ROM]]s.
+Most infos from [[http://mamedev.org/source/src/mame/machine/neocrypt.c.html MAME:neocrypt.c]]
-[[File:brd_cmcnoref.jpg|thumb|NEO-CMC chip. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]]
+[[C ROM|C]] and (merged) [[S ROM|S]] ROM banking and decryption chips found on CHA cartridge boards, in two (?) versions:
+* "CMC42": 90G06CF7042
+* "CMC50": 90G06CF7050 (can also be used to decrypt [[M1 ROM]]s)
-Also found on [[ROM-Only boards|ROM-only]] arcade boards, without the "NEO-CMC" reference (90G06CF7042).
+[[File:brd_cmcnoref.jpg|thumb|"CMC50"]]
+Also found on [[ROM-Only boards|ROM-only]] arcade boards, without the "NEO-CMC" marking.
 [[Category:Chips]]