X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=flashkit.c;h=00819c460ae2350ebdc6f95a2f3a3f07d3b477b1;hb=af236294d24fb1bff39ee38bb15dca6d732d0f95;hp=1dc54d930a45df82409d6038d8e2546aeb8951f2;hpb=78ad81397a40de75d279d6a17969d04a2503785c;p=flashkit-mdc.git

diff --git a/flashkit.c b/flashkit.c
index 1dc54d9..00819c4 100644
--- a/flashkit.c
+++ b/flashkit.c
@@ -406,17 +406,23 @@ static void read_info(int fd)
 
 static uint32_t get_block_addr(uint32_t addr, uint32_t blk_offset)
 {
-	uint32_t i;
+	uint32_t i, base, faddr;
 
 	assert(info.region_cnt);
+	assert(info.size);
+
+	// get a flash address to allow mapper hardware
+	faddr = addr & (info.size - 1);
+	base = addr & ~(info.size - 1);
+
 	for (i = 0; i < info.region_cnt; i++) {
-		if (info.region[i].start <= addr
-		    && addr < info.region[i].start + info.region[i].size)
+		if (info.region[i].start <= faddr
+		    && faddr < info.region[i].start + info.region[i].size)
 		{
-			uint32_t blk = (addr - info.region[i].start)
+			uint32_t blk = (faddr - info.region[i].start)
 					/ info.region[i].block_size
 					+ blk_offset;
-			return info.region[i].start
+			return base + info.region[i].start
 				+ blk * info.region[i].block_size;
 		}
 	}
@@ -460,11 +466,13 @@ static FILE *open_prep_read(const char *fname, long *size)
 	return f;
 }
 
+static const char *portname = "/dev/cu.usbserial-AL0254JM";
+
 static void usage(const char *argv0)
 {
 	printf("usage:\n"
 		"%s [options]\n"
-		"  -d <ttydevice>      (default /dev/ttyUSB0)\n"
+		"  -d <ttydevice>      (default %s)\n"
 		"  -r <file> [size]    dump the cart (default 4MB)\n"
 		"  -w <file> [size]    program the flash (def. file size)\n"
 		"  -s <file> [size]    simple write (SRAM, etc, def. file size)\n"
@@ -473,7 +481,7 @@ static void usage(const char *argv0)
 		"  -8                  8bit flash\n"
 		"  -v                  verify written data\n"
 		"  -i                  get info about the flash chip\n"
-		, argv0);
+		, argv0, portname);
 	exit(1);
 }
 
@@ -498,7 +506,6 @@ static uint8_t g_block2[0x10000];
 
 int main(int argc, char *argv[])
 {
-	const char *portname = "/dev/ttyUSB0";
 	const char *fname_w = NULL;
 	const char *fname_r = NULL;
 	const char *fname_ws = NULL;