fix rom2cart support for 2KB (type 57)

2 files changed, 5 insertions, 5 deletions

diff --git a/TODO b/TODO
index 04a4c1f..5214abd 100644
--- a/TODO
+++ b/TODO
@@ -1,6 +1,4 @@
 for now:
-- rom2cart doesn't fully support type 57, standard 2K cart, because it
-  assumes all cart images are a multiple of 4K in size.
 
 later:
 - add cassio?
diff --git a/rom2cart.c b/rom2cart.c
index f6f8754..7eaaa06 100644
--- a/rom2cart.c
+++ b/rom2cart.c
@@ -561,9 +561,11 @@ int main(int argc, char **argv) {
 		fprintf(stderr, SELF ": input file is empty!\n");
 		exit(1);
 	} else if(size % 4096) {
-		fprintf(stderr, SELF ": %s: input size not a multiple of 4KB!\n",
-				(type_override ? "warning" : "fatal"));
-		if(!type_override) exit(1);
+		if(size != 2048) {
+			fprintf(stderr, SELF ": %s: input size %d bytes, not a multiple of 4KB, and not 2KB either!\n",
+					(type_override ? "warning" : "fatal"), size);
+			if(!type_override) exit(1);
+		}
 	}
 
 	if(!type) {