fix 1-cycle NOPs in coarse emulation mode

ziplantil · Oct 21, 2022 · 699891e · 699891e
1 parent 287d9b1
commit 699891e
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Showing 5 changed files with 12 additions and 5 deletions.
diff --git a/include/w65c02s.h b/include/w65c02s.h
@@ -2,7 +2,7 @@
             w65c02s.h -- cycle-accurate C emulator of the WDC 65C02S
                          as a single-header library
             by ziplantil 2022 -- under the CC0 license
-            version: 2022-10-20
+            version: 2022-10-21
 *******************************************************************************/
 
 #ifndef W65C02S_H
@@ -2009,7 +2009,11 @@ static unsigned w65c02s_mode_int_wait_stop(W65C02S_PARAMS_MODE) {
 }
 
 static unsigned w65c02s_mode_implied_1c(W65C02S_PARAMS_MODE) {
+#if W65C02S_COARSE
+    return 1; /* spent 1 cycle doing nothing */
+#else
     return 0; /* return immediately */
+#endif
 }
 
 static void w65c02s_prerun_mode(struct w65c02s_cpu *cpu) {

diff --git a/test/Makefile b/test/Makefile
@@ -15,7 +15,7 @@ endif
 
 HEADERS=../include/w65c02s.h
 
-CEFLAGS=-DW65C02S_LINK=1
+CEFLAGS=
 
 ifdef PROFILE
 CFLAGS:=$(CFLAGS) -pg -g2

diff --git a/test/benchmark.c b/test/benchmark.c
@@ -2,7 +2,7 @@
             w65c02s.h -- cycle-accurate C emulator of the WDC 65C02S
                          as a single-header library
             by ziplantil 2022 -- under the CC0 license
-            version: 2022-10-20
+            version: 2022-10-21
 
             busdump.c - bus dump program
 *******************************************************************************/
@@ -14,6 +14,7 @@
 #include <time.h>
 
 #define W65C02S_IMPL 1
+#define W65C02S_LINK 1
 #include "w65c02s.h"
 
 #if __STDC_VERSION__ >= 201112L

diff --git a/test/busdump.c b/test/busdump.c
@@ -2,7 +2,7 @@
             w65c02s.h -- cycle-accurate C emulator of the WDC 65C02S
                          as a single-header library
             by ziplantil 2022 -- under the CC0 license
-            version: 2022-10-20
+            version: 2022-10-21
 
             busdump.c - bus dump program
 *******************************************************************************/
@@ -13,6 +13,7 @@
 #include <string.h>
 
 #define W65C02S_IMPL 1
+#define W65C02S_LINK 1
 #include "w65c02s.h"
 
 uint8_t ram[65536];

diff --git a/test/monitor.c b/test/monitor.c
@@ -2,7 +2,7 @@
             w65c02s.h -- cycle-accurate C emulator of the WDC 65C02S
                          as a single-header library
             by ziplantil 2022 -- under the CC0 license
-            version: 2022-10-20
+            version: 2022-10-21
 
             monitor.c - test monitor
 *******************************************************************************/
@@ -17,6 +17,7 @@
 #endif
 
 #define W65C02S_IMPL 1
+#define W65C02S_LINK 1
 #include "w65c02s.h"
 
 uint8_t ram[65536];