From 3276f03ffe6db7b4a55efe03fdef3a6357e4c004 Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Mon, 1 Jul 2024 13:21:31 -0800
Subject: [PATCH] (uxn.c) Use small registers for SWP/DUP

---
 src/uxn.c    | 6 +++---
 src/uxn11.c  | 2 +-
 src/uxncli.c | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/uxn.c b/src/uxn.c
index 86446ad..2421b9c 100644
--- a/src/uxn.c
+++ b/src/uxn.c
@@ -36,7 +36,7 @@ WITH REGARD TO THIS SOFTWARE.
 int
 uxn_eval(Uint16 pc)
 {
-	Uint16 t, n, l, r;
+	Uint16 t, n, l, x, r;
 	Uint8 *rr;
 	if(!pc || uxn.dev[0x0f]) return 0;
 	for(;;) {
@@ -51,11 +51,11 @@ uxn_eval(Uint16 pc)
 			case 0x03: /* NIP  */ t=T;            SET(2,-1) T = t; break;
 			case 0x23: /* NIP2 */ t=T,n=N;        SET(4,-2) T = t, N = n; break;
 			case 0x04: /* SWP  */ t=T;n=N;        SET(2, 0) T = n, N = t; break;
-			case 0x24: /* SWP2 */ t=T2,n=N2;      SET(4, 0) T2_(n) N2_(t) break;
+			case 0x24: /* SWP2 */ t=T,n=N,l=L,x=X;SET(4, 0) T = l, N = x, L = t, X = n; break;
 			case 0x05: /* ROT  */ t=T,n=N,l=L;    SET(3, 0) T = l, N = t, L = n; break;
 			case 0x25: /* ROT2 */ t=T2,n=N2,l=L2; SET(6, 0) T2_(l) N2_(t) L2_(n) break;
 			case 0x06: /* DUP  */ t=T;            SET(1, 1) T = t, N = t; break;
-			case 0x26: /* DUP2 */ t=T2;           SET(2, 2) T2_(t) N2_(t) break;
+			case 0x26: /* DUP2 */ t=T,n=N;        SET(2, 2) T = t, N = n, L = t, X = n; break;
 			case 0x07: /* OVR  */ t=T,n=N;        SET(2, 1) T = n, N = t, L = n; break;
 			case 0x27: /* OVR2 */ t=T2,n=N2;      SET(4, 2) T2_(n) N2_(t) L2_(n) break;
 			case 0x08: /* EQU  */ t=T,n=N;        SET(2,-1) T = n == t; break;
diff --git a/src/uxn11.c b/src/uxn11.c
index bb1d95b..594b3ea 100644
--- a/src/uxn11.c
+++ b/src/uxn11.c
@@ -271,7 +271,7 @@ main(int argc, char **argv)
 	int i = 1;
 	char *rom;
 	if(i != argc && argv[i][0] == '-' && argv[i][1] == 'v') {
-		fprintf(stdout, "Uxn11 - Varvara Emulator, 30 Jun 2024.\n");
+		fprintf(stdout, "Uxn11 - Varvara Emulator, 1 Jul 2024.\n");
 		i++;
 	}
 	rom = i == argc ? "boot.rom" : argv[i++];
diff --git a/src/uxncli.c b/src/uxncli.c
index 1cdf2de..fd451ac 100644
--- a/src/uxncli.c
+++ b/src/uxncli.c
@@ -51,7 +51,7 @@ main(int argc, char **argv)
 		return system_error("usage", "uxncli [-v] file.rom [args..]");
 	/* Read flags */
 	if(argv[i][0] == '-' && argv[i][1] == 'v')
-		return !printf("Uxncli - Console Varvara Emulator, 30 Jun 2024\n");
+		return !printf("Uxncli - Console Varvara Emulator, 1 Jul 2024\n");
 	if(!system_boot((Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))
 		return system_error("Init", "Failed to initialize uxn.");
 	/* Game Loop */