Add emulateme for PIC baseline

pic/Makefile

@@ -0,0 +1,4 @@
+
+emulateme.%.elf: emulateme.tinymem.c
+	xc8-cc -O0 -mcpu=$(notdir $*) -o $@ $<
+	rm *.o *.sdb *.sym *.lst *.rlf *.s *.d *.p1 *.cmf *.hxl

pic/emulateme.pic16f505.hex

@@ -0,0 +1,25 @@
+:1000000064002500A304040AA405A3044809A3046A
+:100010003000A3044909A3043100A3044A09A3043E
+:100020003200A3044B09A3043300A3044C09A30426
+:100030003400A3044D09A3043500A3044E09A3040E
+:100040003600A3044F09A3043700A3045009A304F6
+:100050003800A3045109A3043900A3045209A304DE
+:100060003A00A3045309A3043B00A3045409A304C6
+:100070003C00A3045509A3043D00A3045609A304AE
+:100080003E00A3045709A3043F006400A3043D0BF2
+:10009000510853084D0877085808140851085F089C
+:1000A00045086C0817087F086E0878087F081C0848
+:0400B000A304000B9A
+:1001D00068000402A4027F0EE201000858084108EA
+:1001E0006E08790843086F086C086F087508720874
+:1001F00059086F0875084C0869086B0865080008FD
+:10020000A404C404710073001302D0012400A304E9
+:10021000E909A3042F00300CA404C404D301240072
+:100220000F02A001300CA404C404D3012400000276
+:10023000A404C404B101010CF301100C93000307E2
+:10024000220B230B040B580C91014306280B290B9E
+:100250002A0B3C0B720011022F00300CD20124003B
+:100260000F02A001010CA404C404F201100C9200BE
+:1002700003073B0B3C0B2B0B0008020CA404C4042B
+:10028000380018023000A3045809A304A304020A8A
+:00000001FF

pic/emulateme.tinymem.c

@@ -0,0 +1,26 @@
+#include <stdint.h>
+#define LEN 0x10
+
+static const uint8_t parity_ref = 0x58;
+static char seckrit[LEN] = { 0x51, 0x53, 0x4d, 0x77, 0x58, 0x14, 0x51, 0x5f, 0x45, 0x6c, 0x17, 0x7f, 0x6e, 0x78, 0x7f, 0x1c };
+
+uint8_t decrypt(const char *key) {
+	uint8_t parity = 0;
+	for (uint8_t i = 0; i < LEN; i++) {
+		seckrit[i] ^= key[i];
+		parity ^= seckrit[i];
+	}
+	if (parity != parity_ref) {
+		return 0;
+	}
+	for (uint8_t i = 0; i < LEN; i++) {
+		seckrit[i] ^= parity;
+	}
+	return 1;
+}
+
+int main(int argc, const char *argv[]) {
+	const char *key = "AnyColourYouLike";
+	decrypt(key);
+	return 0;
+}