Tweak the config, add doc/dynamic-screens.txtHEADmaster

1 files changed, 21 insertions, 1 deletions

diff --git a/config/config.c b/config/config.c
index bd9c1a6..9c97d43 100644
--- a/config/config.c
+++ b/config/config.c
@@ -10,6 +10,7 @@
 #include <peekpoke.h>
 
 #include "../src/config.h"
+#include "os2ram.h"
 
 #ifndef VERSION
 #define VERSION "?????"
@@ -44,8 +45,9 @@ char buf[128];
 char numbuf[4];
 char server[101];
 char port[6];
+char use_xl_ram = 1;
 
-unsigned int *bonus_addrs = 0xf0;
+unsigned int *bonus_addrs = (unsigned int *)0xd4; /* aka FR0 */
 
 char lcgetc(void) {
 	char c;
@@ -81,6 +83,19 @@ void detect_dos(void) {
 	if(h || d) have_dos = 1;
 }
 
+void detect_xl(void) {
+	if(!is_xl()) {
+		print("400/800 detected, no extra RAM\n");
+		use_xl_ram = 0;
+		return;
+	}
+
+	yn("XL/XE detected, use extra RAM", use_xl_ram);
+	if(!use_xl_ram) return;
+
+	os_to_ram();
+}
+
 void print(const char *text) {
 	fputs(text, stdout);
 }
@@ -536,6 +551,9 @@ void main(void) {
 	/* loading1.xex left the original DL address at $fe */
 	if(PEEKW(0xfe)) POKEW(0x0230, PEEKW(0xfe));
 
+	/* clear the bonus screen addresses in case something left junk there */
+	memset(bonus_addrs, 0, 14);
+
 	set_default_config();
 
 	OS.color2 = conf->colors[0];
@@ -546,6 +564,8 @@ void main(void) {
 	print("Version " VERSION "\n\n");
 
 	detect_dos();
+	detect_xl();
+
 	if(!load(0))
 		print("Using built-in default config.\n");