From e4cc7006c09e3e9de999ba52507ddd2ba9d58e49 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Tue, 7 Feb 2023 23:27:23 +0100
Subject: fast ram

---
 ebs.c    | 12 ++++++++++++
 makefile |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/ebs.c b/ebs.c
index 446e92b..401641e 100644
--- a/ebs.c
+++ b/ebs.c
@@ -19,7 +19,11 @@ typedef uint16_t naslov;
  */
 
 struct ebs {
+#ifdef FAST_RAM
+	int_fast32_t ram[(RAM_VELIKOST+2)*8];
+#else
 	unsigned char ram[RAM_VELIKOST-2+2]; /**< ne vsebuje programskega števca, ampak vsebuje magic bite */
+#endif
 	unsigned char * pm;
 	unsigned pm_velikost;
 	uint16_t pc;
@@ -65,7 +69,11 @@ static bool peek (struct ebs * e, naslov a) {
 	assert(a < RAM_VELIKOST*8+15);
 	if (a < 16)
 		return e->pc & (1 << (15-a));
+#ifdef FAST_RAM
+	return e->ram[a];
+#else
 	return e->ram[a/8-2] & (1 << (a % 8));
+#endif
 }
 
 /**
@@ -85,10 +93,14 @@ static void poke (struct ebs * e, naslov a, bool v) {
 			e->pc &= ~(1 << (15-a));
 		return;
 	}
+#ifdef FAST_RAM
+	e->ram[a] = v;
+#else
 	if (v)
 		e->ram[a/8-2] |= (1 << (a % 8));
 	else
 		e->ram[a/8-2] &= ~(1 << (a % 8));
+#endif
 }
 
 static struct inštrukcija inštrukcija (struct ebs * e, naslov a) {
diff --git a/makefile b/makefile
index b183ada..e109eee 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,6 @@
 DESTDIR=/
 CC=cc
-MYCFLAGS=-O3 -DNO_HOOKS -march=native -Wall -Wextra -Wformat -pedantic -g -I. # -fsanitize=address
+MYCFLAGS=-O3 -DFAST_RAM -DNO_HOOKS -march=native -Wall -Wextra -Wformat -pedantic -g -I. # -fsanitize=address
 MYLDFLAGS=-lpthread
 
 default: ebs disass
-- 
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