Search found 2 matches
- Sun May 19, 2013 6:24 am
- Forum: SNESdev
- Topic: 27C322 to SNES bus?
- Replies: 49
- Views: 52434
Re: 27C322 to SNES bus?
Hi, I am trying to build a SNES card based on 1 27C322, 2 74xx257 and only one 74LS139. Here's a picture: [/url]http://imageshack.us/photo/my-images/11/61748144.jpg[url] I have an 1J3B-01 4MB Hirom board with an 74ls139 as Sram decoder and 64k Sram. This is how its connected by Nintendo. A15 1 16 VC...
- Sun May 19, 2013 6:02 am
- Forum: SNESdev
- Topic: How to access 27C322 with 2 74xx257 and only one 74LS139 ?
- Replies: 1
- Views: 2039
How to access 27C322 with 2 74xx257 and only one 74LS139 ?
Hi, I am trying to build a SNES card based on 1 27C322, 2 74xx257 and only one 74LS139. Here's a picture: http://imageshack.us/photo/my-images/11/61748144.jpg/ I have an 1J3B-01 4MB Hirom board with an 74ls139 as Sram decoder and 64k Sram. This is how its connected by Nintendo. A15 1 16 VCC A13 2 15...