diff --git a/roms/basic.h b/roms/basic.h
index 116358b..66ac6c1 100644
--- a/roms/basic.h
+++ b/roms/basic.h
@@ -1,4 +1,4 @@
-static const unsigned char basic[] = {
+static const uint8_t basic[] PROGMEM = {
 	0x4c, 0xb0, 0xe2, 0xad, 0x11, 0xd0, 0x10, 0xfb, 
 	0xad, 0x10, 0xd0, 0x60, 0x8a, 0x29, 0x20, 0xf0, 
 	0x23, 0xa9, 0xa0, 0x85, 0xe4, 0x4c, 0xc9, 0xe3, 
diff --git a/roms/krusader6502.h b/roms/krusader6502.h
index 14e372a..faae272 100644
--- a/roms/krusader6502.h
+++ b/roms/krusader6502.h
@@ -1,4 +1,4 @@
-static const unsigned char krusader6502[] = {
+static const uint8_t krusader6502[] PROGMEM = {
 	0x4c, 0xb0, 0xe2, 0xad, 0x11, 0xd0, 0x10, 0xfb, 
 	0xad, 0x10, 0xd0, 0x60, 0x8a, 0x29, 0x20, 0xf0, 
 	0x23, 0xa9, 0xa0, 0x85, 0xe4, 0x4c, 0xc9, 0xe3, 
diff --git a/roms/krusader65c02.h b/roms/krusader65c02.h
index 658963e..54c0d9e 100644
--- a/roms/krusader65c02.h
+++ b/roms/krusader65c02.h
@@ -1,4 +1,4 @@
-static const unsigned char krusader65c02[] = {
+static const uint8_t krusader65c02[] PROGMEM = {
 	0x4c, 0xb0, 0xe2, 0xad, 0x11, 0xd0, 0x10, 0xfb, 
 	0xad, 0x10, 0xd0, 0x60, 0x8a, 0x29, 0x20, 0xf0, 
 	0x23, 0xa9, 0xa0, 0x85, 0xe4, 0x4c, 0xc9, 0xe3, 
diff --git a/roms/monitor.h b/roms/monitor.h
index c6d393a..a982ce4 100644
--- a/roms/monitor.h
+++ b/roms/monitor.h
@@ -1,4 +1,4 @@
-static const unsigned char monitor[] = {
+static const uint8_t monitor[] PROGMEM = {
 	0xd8, 0x58, 0xa0, 0x7f, 0x8c, 0x12, 0xd0, 0xa9, 
 	0xa7, 0x8d, 0x11, 0xd0, 0x8d, 0x13, 0xd0, 0xc9, 
 	0xdf, 0xf0, 0x13, 0xc9, 0x9b, 0xf0, 0x03, 0xc8,