From 6c2f39b958a631af1ed4bdc68a1f7aa5ededa84c Mon Sep 17 00:00:00 2001 From: optixx Date: Sun, 15 May 2016 13:13:52 +0200 Subject: [PATCH] Delete SNESROM.PIN --- files/docs/snes/SNESROM.PIN | 35 ----------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 files/docs/snes/SNESROM.PIN diff --git a/files/docs/snes/SNESROM.PIN b/files/docs/snes/SNESROM.PIN deleted file mode 100644 index a3c0855..0000000 --- a/files/docs/snes/SNESROM.PIN +++ /dev/null @@ -1,35 +0,0 @@ -Here's the pinout to a 4Mbit/*Mbit mask Rom used in SNES carts as I've -deduced from various specs and actual testing. - -1 A17 ------\__/------ +5v 32 -2 A18 | | *OE 31 -3 A15 A19 30 -4 A12 A14 29 -5 A7 A13 28 -6 A6 A8 27 -7 A5 A9 26 -8 A4 A11 25 -9 A3 A16 24 -10 A2 A10 23 -11 A1 *CE 22 -12 A0 D7 21 -13 D0 D6 20 -14 D1 D5 19 -15 D2 D4 18 -16 GND |---------------| D3 17 - -The design approximates std EPROM/SRAM pinouts except for the upper address -lines (A16-A19), and OE which sits where VPP or PRGM usually is for an EPROM. -This pinout approximates Fujitsu's tentative mask ROM pinouts (a package -called GAMEMEDC.ZIP seems to base itself on this and is consequently wrong). -Nintendo uses Fujitsu chips in some carts, but from my testing and card-edge -pinouts provided by other users, I conclude that Fujitsu must have modified -the designs. - -NOTE!: Card-edge pin #40, address line 15 (A15) is not used by any cart I've -seen. And ROM pin #3 (see above) that I've determined to be A15 is connected -to card-edge pin#41, labeled on many pinouts schems as A16..not A15!!! -Would some one please verify this inconsistency. - -PS: How many Megabits can the Snes address? -