Version 9.4b - see readme.md file for details.

Makefile

@@ -15,7 +15,7 @@ include $(DEVKITARM)/ds_rules
 
 export TARGET		:=	ColecoDS
 export TOPDIR		:=	$(CURDIR)
-export VERSION		:=  9.4a
+export VERSION		:=  9.4b
 
 ICON 		:= -b $(CURDIR)/logo.bmp "ColecoDS $(VERSION);wavemotion-dave;/~https://github.com/wavemotion-dave/ColecoDS" 
 

README.md

@@ -412,6 +412,8 @@ Versions :
 V9.4: 16-Mar-2024 by wavemotion-dave
 * Tatung Einstein improvements - more games run more correctly.
 * Other minor tweaks and cleanup as time permitted.
+* 9.4b - Einstein RAMDISK now unified in /data/ directory (rather than have one for each directory of .dsk files)
+* 9.4b - Tweaks to the CTC timer engine for Einstein JSW2
 
 V9.3: 10-Mar-2024 by wavemotion-dave
 * Fixed TMS9918 VDP 5th Sprite Flag handling and slight optmization to the VDP driver.

arm9/source/einstein.c

@@ -720,7 +720,7 @@ unsigned char RAMDisk_TrackInfo[] = {
 
 void einstein_init_ramdisk(void)
 {
-    FILE *fp = fopen("einstein.ramd", "wb+");
+    FILE *fp = fopen("/data/einstein.ramd", "wb+");
     fwrite(RAMDisk_Header, 1, sizeof(RAMDisk_Header), fp);
     for (u8 track=0; track<40; track++)
     {
@@ -756,11 +756,17 @@ void einstein_init_ramdisk(void)
 
 void einstein_load_ramdisk(void)
 {
-    FILE *fp = fopen("einstein.ramd", "rb");
-    if (fp == NULL)
+    FILE *fp = fopen("/data/einstein.ramd", "rb");
+
+    if (fp == NULL) // See if there is one in the local directory
+    {
+        fp = fopen("einstein.ramd", "rb"); // This will get written back to /data/einstein.ramd
+    }
+
+    if (fp == NULL) // If we didn't find one... we create a blank one
     {
         einstein_init_ramdisk();
-        fp = fopen("einstein.ramd", "rb");
+        fp = fopen("/data/einstein.ramd", "rb");
     }
 
     if (fp != NULL)
@@ -839,7 +845,7 @@ void einstein_save_ramdisk(void)
         }
     }
 
-    FILE *fp = fopen("einstein.ramd", "wb");
+    FILE *fp = fopen("/data/einstein.ramd", "wb");
     if (fp != NULL)
     {
         fwrite(ROM_Memory + (256*1024), 1, ramdisk_len, fp);