diff --git a/src/backup-debugdev.c b/src/backup-debugdev.c
deleted file mode 100644
index 3b91b0c..0000000
--- a/src/backup-debugdev.c
+++ /dev/null
@@ -1,119 +0,0 @@
-
-static void
-stack_diff(Stack *old, Stack *new, char *title)
-{
-	size_t i;
-	printf("%6s: ", title);
-	for(i = 0;; ++i) {
-		if(i < old->ptr) {
-			if(i < new->ptr) {
-				if(old->dat[i] == new->dat[i]) {
-					printf(" \033[0m%02x", new->dat[i]);
-				} else {
-					printf(" \033[0;31m%02x\033[33;1m%02x", old->dat[i], new->dat[i]);
-				}
-			} else { /* only in old stack */
-				printf(" \033[0;31m%02x", old->dat[i]);
-			}
-		} else {
-			if(i < new->ptr) { /* only in new stack */
-				printf(" \033[33;1m%02x", new->dat[i]);
-			} else { /* in neither stack, end of loop */
-				break;
-			}
-		}
-	}
-	printf("\033[0m\n");
-}
-
-static void
-memory_diff(Uint8 *old, Uint8 *new, size_t start, size_t end)
-{
-	size_t i, j;
-	for(i = start; i < end; i += 0x10) {
-		int changes = 0;
-		for(j = i; j < i + 0x10; ++j) {
-			if(old[j] != new[j]) {
-				changes = 1;
-				break;
-			}
-		}
-		if(!changes) continue;
-		printf("0x%04lx:  ", i);
-		for(j = i; j < i + 0x10; ++j) {
-			printf("\033[%sm%02x", old[j] == new[j] ? "0" : "33;1", new[j]);
-			if(j % 2) putchar(' ');
-		}
-		printf("  ");
-		for(j = i; j < i + 0x10; ++j) {
-			printf("\033[%sm%c", old[j] == new[j] ? "0" : "33;1", (new[j] < ' ' || new[j] > '~') ? '.' : new[j]);
-		}
-		printf("\033[0m\n");
-	}
-}
-
-Uint8
-debug_poke(Uxn *u, Uint16 ptr, Uint8 b0, Uint8 b1)
-{
-	size_t i;
-	(void)ptr;
-	switch(b0) {
-	case 0x08: /* stack */
-		printf("pc %04x working stack:", u->ram.ptr);
-		for(i = 0; i < u->wst.ptr; ++i) {
-			printf(" %02x", u->wst.dat[i]);
-		}
-		printf(", return stack: ");
-		for(i = 0; i < u->rst.ptr; ++i) {
-			printf(" %02x", u->rst.dat[i]);
-		}
-		printf("\n");
-		if(b1 && b1 != u->wst.ptr) {
-			printf("length %d failed to match %d!\n", b1, u->wst.ptr);
-			exit(1);
-		}
-		break;
-	case 0x09: /* snapshot */
-		if(u->snapshot != NULL) {
-			if(!(b1 & 0x01)) {
-				stack_diff(&u->snapshot->wst, &u->wst, "work");
-			}
-			if(!(b1 & 0x02)) {
-				stack_diff(&u->snapshot->rst, &u->rst, "return");
-			}
-			if(!(b1 & 0x04)) {
-				memory_diff(u->snapshot->ram.dat, u->ram.dat, 0, PAGE_DEVICE);
-				memory_diff(u->snapshot->ram.dat, u->ram.dat, PAGE_DEVICE + 0x0100, 0x10000);
-			}
-		}
-		{
-			int want_snapshot = !(b1 & 0x80);
-			if(want_snapshot) {
-				if(u->snapshot == NULL) {
-					u->snapshot = malloc(sizeof(*u));
-				}
-				for(i = 0; i < sizeof(*u); ++i) {
-					((char *)u->snapshot)[i] = ((char *)u)[i];
-				}
-			}
-			printf("pc 0x%04x snapshot%s taken\n", u->counter, want_snapshot ? "" : " not");
-		}
-		break;
-	case 0x0a: /* exit */
-		printf("Exited after 0x%04x cycles.\n", u->counter);
-		exit(b1);
-		break;
-	case 0x0f: /* test mode */
-		u->test_mode = b1;
-		printf("Test mode is now 0x%02x: ", u->test_mode);
-		if(b1 & 0x01) {
-			printf("BRK resets stacks to zero length");
-		} else {
-			printf("all test mode features disabled");
-		}
-		printf("\n");
-		break;
-	}
-	fflush(stdout);
-	return b1;
-}
\ No newline at end of file