From a91679d6f5c9afc68e599809aea7336d2a218fa6 Mon Sep 17 00:00:00 2001
From: Lars Brinkhoff <lars@nocrew.org>
Date: Tue, 16 Jun 2020 14:21:35 +0200
Subject: [PATCH] IMLAC: Fix data switches.

---
 imlac/imlac_cpu.c | 23 +++++++++++++++++++++--
 imlac/imlac_crt.c |  8 --------
 2 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/imlac/imlac_cpu.c b/imlac/imlac_cpu.c
index 69f5a044..13c49138 100644
--- a/imlac/imlac_cpu.c
+++ b/imlac/imlac_cpu.c
@@ -25,6 +25,10 @@
 */
 
 #include "imlac_defs.h"
+#ifdef HAVE_LIBSDL
+#include "display/display.h"
+#endif
+
 
 /* Debug */
 #define DBG_CPU         0001
@@ -45,7 +49,6 @@ static uint16 DS;
 static uint16 IR;
 static uint16 MA;
 static uint16 MB;
-static uint16 SWITCHES;
 static int ion_delay = 0;
 
 /* IRQ state. */
@@ -77,7 +80,6 @@ REG cpu_reg[] = {
   { ORDATAD (IR, IR, 16, "Instruction") },
   { ORDATAD (MA, MA, 13, "Memory Address") },
   { ORDATAD (MB, MB, 16, "Memory Buffer") },
-  { ORDATAD (SWITCHES, SWITCHES, 16, "Toggle switches") },
   { NULL }
 };
 
@@ -574,3 +576,20 @@ rom_show_type (FILE *st, UNIT *up, int32 v, CONST void *dp)
   }
   return SCPE_OK;
 }
+
+#ifdef HAVE_LIBSDL
+/* Called from display library to get data switches. */
+void
+cpu_get_switches (unsigned long *p1, unsigned long *p2)
+{
+  *p1 = DS;
+  *p2 = 0;
+}
+
+/* Called from display library to set data switches. */
+void
+cpu_set_switches (unsigned long p1, unsigned long p2)
+{
+  DS = p1 & 0177777;
+}
+#endif /* HAVE_LIBSDL */
diff --git a/imlac/imlac_crt.c b/imlac/imlac_crt.c
index 68b69f8b..6ecb2316 100644
--- a/imlac/imlac_crt.c
+++ b/imlac/imlac_crt.c
@@ -126,11 +126,3 @@ void
 crt_hvc (void)
 {
 }
-
-void cpu_get_switches (unsigned long *p1, unsigned long *p2)
-{
-}
-
-void cpu_set_switches (unsigned long p1, unsigned long p2)
-{
-}