# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1662933882 25200
# Node ID b6fdedd3b070d72ae5b7e88728f665ecd3d65e06
# Parent  54cd40fc0da57141a59e9622deedcc66a2a124e2
Fix SRAM endianness for word-wide SRAM combined with Sega mapper

diff -r 54cd40fc0da5 -r b6fdedd3b070 sega_mapper.c
--- a/sega_mapper.c	Thu Sep 08 21:18:30 2022 -0700
+++ b/sega_mapper.c	Sun Sep 11 15:04:42 2022 -0700
@@ -5,10 +5,11 @@
 {
 	genesis_context * gen = context->system;
 	address &= gen->save_ram_mask;
+	uint16_t *word_storage = (uint16_t *)gen->save_storage;
 	switch(gen->save_type)
 	{
 	case RAM_FLAG_BOTH:
-		return gen->save_storage[address] << 8 | gen->save_storage[address+1];
+		return word_storage[address >> 1];
 	case RAM_FLAG_EVEN:
 		return gen->save_storage[address >> 1] << 8 | 0xFF;
 	case RAM_FLAG_ODD:
@@ -24,7 +25,7 @@
 	switch(gen->save_type)
 	{
 	case RAM_FLAG_BOTH:
-		return gen->save_storage[address];
+		return gen->save_storage[address ^ 1];
 	case RAM_FLAG_EVEN:
 		if (address & 1) {
 			return 0xFF;
@@ -53,12 +54,12 @@
 		return context;
 	}
 	if ((gen->bank_regs[0] & 0x3) == 1) {
+		uint16_t *word_storage = (uint16_t *)gen->save_storage;
 		address &= gen->save_ram_mask;
 		switch(gen->save_type)
 		{
 		case RAM_FLAG_BOTH:
-			gen->save_storage[address] = value >> 8;
-			gen->save_storage[address+1] = value;
+			word_storage[address >> 1] = value;
 			break;
 		case RAM_FLAG_EVEN:
 			gen->save_storage[address >> 1] = value >> 8;
@@ -79,7 +80,7 @@
 		switch(gen->save_type)
 		{
 		case RAM_FLAG_BOTH:
-			gen->save_storage[address] = value;
+			gen->save_storage[address ^ 1] = value;
 			break;
 		case RAM_FLAG_EVEN:
 			if (!(address & 1)) {