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05 September 2008, 18:38
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#1 |
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Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,041
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Cloning the Vortex GoldenGate Monitor Master...
The Monitor Master offers automatic monitor=switching between an ISA VGA and the Amiga video signal... The device is fairly simple to clone , but I worry that the TI chip next to the yellow switch has protected content... can someone confirm this? It has the TI logo and 234 302K sn74S157N , a Quadruple 2-Line to 1-Line Selector/Multiplexer
I have no idea what it does, I just opened mine in order to actually see if it can be done... someone else will build the clones  
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A1200D mfilos ed. : ACA 1231/42 , Indivision MK2 , IDEfix Express , Subway , PicoPSU 120w custom 3.9 ROM/OS |
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05 September 2008, 20:28
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#2 |
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Registered User
Join Date: Jun 2008
Location: planet earth
Posts: 1,116
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no clue, but found a datasheet:
http://www.datasheetcatalog.net/de/d...N74S157N.shtml |
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05 September 2008, 22:41
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#3 |
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Registered User
Join Date: Jul 2008
Location: California
Posts: 177
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It's a simple TTL logic chip.
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05 September 2008, 22:47
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#4 | |
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Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,041
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Quote:
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A1200D mfilos ed. : ACA 1231/42 , Indivision MK2 , IDEfix Express , Subway , PicoPSU 120w custom 3.9 ROM/OS |
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05 September 2008, 23:10
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#5 |
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Amibay Senior Staff
Join Date: Feb 2008
Location: Cardiff / Wales
Posts: 1,296
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@keraopi
Hello my friend, yes it is a std off the shelf TTL chip, no programming required & replacement can be dropped in TC 
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06 September 2008, 03:55
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#6 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 47
Posts: 3,477
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And better: lots of equivalents! the piece is a TTL 74S157, so any 74 or 54 (military grade) with the middle letters S, F or LS will work.
Examples: 74LS157 54S157 54F157...
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Amigan since 1989 Known drunk since 1982 (don't know quite well, I was drunk) 13 Amigas at home Finally a Z3 one! I'll stick with 'Cachaça do Inter' for this week: Chivas gives headaches! :D |
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06 September 2008, 09:50
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#7 |
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Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,041
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excellent news then!
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A1200D mfilos ed. : ACA 1231/42 , Indivision MK2 , IDEfix Express , Subway , PicoPSU 120w custom 3.9 ROM/OS |
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03 July 2011, 22:21
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#8 |
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Registered User
Join Date: Aug 2006
Location: Finland
Posts: 59
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Yes, I know this is an old thread, but has anyone tried to reproduce Monitor Master?
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A2000 1mb chip, 64mb fast, Apollo 2030, Delfina Plus, and GG486 with Ati 28800, SB16 and MT-32 for decent sounds. |
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