X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;ds=sidebyside;f=ROM2%2Fhelpers.c;h=f7bb4062fe0b5786aa5888c8c5f1a275e9558aa2;hb=24f4e50d8f5671b40d2662bbcd50e3859bcd5205;hp=f336ae103f20722be300430f9957b8662f8fd504;hpb=a1106ee52492a26f91897578c0761d1aedf6b44c;p=uccvend-snackrom.git

diff --git a/ROM2/helpers.c b/ROM2/helpers.c
index f336ae1..f7bb406 100644
--- a/ROM2/helpers.c
+++ b/ROM2/helpers.c
@@ -61,3 +61,29 @@ void my_memset(char* dst, u8 val, u16 count) {
 	char* c;
 	for (c = dst; c < dst+count; c++) *c = val;
 }
+
+u8 hexchar2u8(char b) {
+	if (b >= '0' && b <= '9') return b-'0';
+	if (b >= 'a' && b <= 'f') return b-'a'+0x0a;
+	if (b >= 'A' && b <= 'F') return b-'A'+0x0a;
+	return 0;
+}
+
+char nibble2hexchar(u8 b) {
+	if (b <= 9) return b+'0';
+	if (b >= 10 && b <= 15) return b+'A'-10;
+	return 'X';
+}
+
+u8 hex2u8(char msb, char lsb) {
+	return (hexchar2u8(msb) << 4) + hexchar2u8(lsb);
+}
+
+static char hexconv_buf[3];
+char* u82hex(u8 a) {
+	hexconv_buf[0] = nibble2hexchar((a&0xf0) >> 4);
+	hexconv_buf[1] = nibble2hexchar(a&0x0f);
+	hexconv_buf[2] = '\0';
+	return hexconv_buf;
+}
+