T O P I C R E V I E W |
scrappysphinx |
Posted - 02/21/2017 : 11:18:37 Hi all, i have recently purchased a Sega CDX console and am looking to replace the bios with a multibios (switched by pic chip) one as seen here
h**p://wolfsoft.de/wordpress/?p=478
As you can see in the link the original bios is a 40 pin surface mount mask rom which can be replaced with a 27c4096 eprom to allow multiple bios (Eng/Usa/Jap) or a single region free bios on a 27c1024. I know this works as i've done it before but its quite messy and i'd prefer to just directly replace the original chip.
So does anyone know of a 40 pin surface mount chip thats pin compatible with a 27c1024 or 27c4096?
Thanks for any help
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13 L A T E S T R E P L I E S (Newest First) |
anniel |
Posted - 10/10/2018 : 14:26:27 quote: Originally posted by JasperCastillo
quote: Originally posted by anniel
27c1024 and 27c4096 are both available in SOP40 and TSOP40.
Hey Thnx for your help it will be very helpful to me
You're welcome. |
JasperCastillo |
Posted - 10/10/2018 : 12:15:05 quote: Originally posted by anniel
27c1024 and 27c4096 are both available in SOP40 and TSOP40.
Hey Thnx for your help it will be very helpful to me |
supervizeur |
Posted - 08/03/2017 : 05:35:23 quote: Originally posted by anniel
You can also use adapter boards.
That's the simplest way. |
supervizeur |
Posted - 08/03/2017 : 05:34:51 quote: Originally posted by anniel
Some specific chips and package sizes go fast. Try to find devices that used the particular chip you need, you can then scavenge the boards.
+1 |
anniel |
Posted - 05/16/2017 : 08:19:13 You can also use adapter boards. |
anniel |
Posted - 05/16/2017 : 08:17:59 Some specific chips and package sizes go fast. Try to find devices that used the particular chip you need, you can then scavenge the boards. |
scrappysphinx |
Posted - 05/16/2017 : 07:38:54 Thanks for the reply and your help, i can find datasheets for the chips but cannot find any actual chips for sale in that package type. Guess i'll have to wire up the 40pin eprom instead. |
anniel |
Posted - 05/08/2017 : 09:24:17 Here is an exemple MX27C1024MC-XX where XX is the access time you want. |
scrappysphinx |
Posted - 05/08/2017 : 06:45:34 So i've been searching for these sop40 27c chips and cannot seem to find any.
Any chance of a link or part number to search for?
The original bios chip (big SEGA chip) can be seen in the image attached
Image Insert:
442115 bytes |
supervizeur |
Posted - 04/01/2017 : 12:17:36 Thanks Anniel! |
anniel |
Posted - 03/31/2017 : 11:42:44 SOP yes TSOP no. |
supervizeur |
Posted - 03/31/2017 : 10:21:40 Same pin-outs? |
anniel |
Posted - 02/22/2017 : 04:18:23 27c1024 and 27c4096 are both available in SOP40 and TSOP40. |