diff --git a/Makefile b/Makefile
index d4751fce..afec2b7e 100644
--- a/Makefile
+++ b/Makefile
@@ -189,7 +189,7 @@ test_mega65: build/kernal_mega65.rom build/basic_mega65.rom build/symbols_mega65
 test_ultimate64: build/kernal_ultimate64.rom build/basic_ultimate64.rom build/symbols_ultimate64.vs
 	x64 -kernal build/kernal_ultimate64.rom -basic build/basic_ultimate64.rom -moncommands build/symbols_ultimate64.vs -8 empty.d64
 
-test_m65: build/newc65
+test_m65: build/newc65.rom
 	m65 -b ../mega65-core/bin/mega65r1.bit -k ../mega65-core/bin/KICKUP.M65 -R build/newc65.rom -4
 
 testremote: build/kernal_generic.rom build/basic_generic.rom build/symbols_generic.vs
diff --git a/STATUS.md b/STATUS.md
index 472daf2b..9c26e41b 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -126,8 +126,10 @@ NOTE: Even the 'DONE' routines won't support features described as missing in on
 | `$FFCC`   | `$F333`    | `CLRCHN`    | DONE     |                                                    |
 | `$FFCF`   | `$F157`    | `CHRIN`     | PARTIAL  |                                                    |
 | `$FFD2`   | `$F1CA`    | `CHROUT`    | PARTIAL  |                                                    |
-| `$FFD5`   | `$F4A5`    | `LOAD`      | PARTIAL  | no VERIFY support, no STOP key, check $F49E addr   |
-| `$FFD8`   | `$F5ED`    | `SAVE`      | NOT DONE | check $F5DD location                               |
+| `$FFD5`   | `$F49E`    | `LOAD`      | PARTIAL  | not yet clear what's this entry doing              |
+| `($0330)` | `$F4A5`    | `LOAD`      | PARTIAL  | no VERIFY support, no STOP key, check $F49E addr   |
+| `$FFD8`   | `$F5DD`    | `SAVE`      | NOT DONE |                                                    |
+| `($0332)` | `$F5ED`    | `SAVE`      | NOT DONE |                                                    |
 | `$FFDB`   |            | `SETTIM`    | DONE     |                                                    |
 | `$FFDE`   |            | `RDTIM`     | DONE     |                                                    |
 | `$FFE1`   | `$F6ED`    | `STOP`      | DONE     |                                                    |
diff --git a/bin/basic_generic.rom b/bin/basic_generic.rom
index 1a3e9780..f1d719c8 100644
Binary files a/bin/basic_generic.rom and b/bin/basic_generic.rom differ
diff --git a/bin/basic_mega65.rom b/bin/basic_mega65.rom
index f992e1d8..e12993d3 100644
Binary files a/bin/basic_mega65.rom and b/bin/basic_mega65.rom differ
diff --git a/bin/basic_ultimate64.rom b/bin/basic_ultimate64.rom
index bbeab1f3..a870b4ac 100644
Binary files a/bin/basic_ultimate64.rom and b/bin/basic_ultimate64.rom differ
diff --git a/bin/kernal_generic.rom b/bin/kernal_generic.rom
index 8b262ddf..d5c4c797 100644
Binary files a/bin/kernal_generic.rom and b/bin/kernal_generic.rom differ
diff --git a/bin/kernal_mega65.rom b/bin/kernal_mega65.rom
index a39fd8ac..d0870777 100644
Binary files a/bin/kernal_mega65.rom and b/bin/kernal_mega65.rom differ
diff --git a/bin/kernal_ultimate64.rom b/bin/kernal_ultimate64.rom
index 65ec49a3..8b59fe08 100644
Binary files a/bin/kernal_ultimate64.rom and b/bin/kernal_ultimate64.rom differ
diff --git a/c64/kernal/f49e.interop b/c64/kernal/f49e.interop
new file mode 100644
index 00000000..e3e2a1b3
--- /dev/null
+++ b/c64/kernal/f49e.interop
@@ -0,0 +1,2 @@
+This is a well-known address of a heavily used Kernal routine, it has to be the same so our ROM is compatible.
+
diff --git a/c64/kernal/f49e.load_int.s b/c64/kernal/f49e.load_int.s
new file mode 100644
index 00000000..837d896c
--- /dev/null
+++ b/c64/kernal/f49e.load_int.s
@@ -0,0 +1,13 @@
+
+//
+// XXX Note: something unusual was done with LOAD routine - although the vector at $330 points to $F4A5,
+//           the Kernal jump table points to $F49E (see also Mapping the C64, page 76). By experimenting
+//           I have already discovered that $F4A5 performs indirect jump via ($0330) vector, but it must
+//           be doing a little bit more - not sure yet, what. Something similar is done with SAVE.
+//
+//           This has to be clarified.
+//
+
+LOAD_INT:
+    jmp (ILOAD)
+
diff --git a/c64/kernal/f5dd.interop b/c64/kernal/f5dd.interop
new file mode 100644
index 00000000..e3e2a1b3
--- /dev/null
+++ b/c64/kernal/f5dd.interop
@@ -0,0 +1,2 @@
+This is a well-known address of a heavily used Kernal routine, it has to be the same so our ROM is compatible.
+
diff --git a/c64/kernal/f5dd.save_int.s b/c64/kernal/f5dd.save_int.s
new file mode 100644
index 00000000..7ef54a41
--- /dev/null
+++ b/c64/kernal/f5dd.save_int.s
@@ -0,0 +1,12 @@
+
+//
+// XXX Note: something unusual was done with LOAD routine - although the vector at $330 points to $F4A5,
+//           the Kernal jump table points to $F49E (see also Mapping the C64, page 76). By experimenting
+//           I have already discovered that $F4A5 performs indirect jump via ($0330) vector, but it must
+//           be doing a little bit more - not sure yet, what. Something similar is done with SAVE.
+//
+//           This has to be clarified.
+//
+
+SAVE_INT:
+    jmp (ISAVE)
diff --git a/c64/kernal/jumptable/ffd5.jload.s b/c64/kernal/jumptable/ffd5.jload.s
index b632434d..ef66f320 100644
--- a/c64/kernal/jumptable/ffd5.jload.s
+++ b/c64/kernal/jumptable/ffd5.jload.s
@@ -1,4 +1,4 @@
 // load RAM from a device
 // C64 Programmer's Reference Guide Page 272
 
-	jmp LOAD
+	jmp LOAD_INT
diff --git a/c64/kernal/jumptable/ffd8.jsave.s b/c64/kernal/jumptable/ffd8.jsave.s
index 1ac529e4..1213f478 100644
--- a/c64/kernal/jumptable/ffd8.jsave.s
+++ b/c64/kernal/jumptable/ffd8.jsave.s
@@ -1,4 +1,4 @@
 // SAVE RAM to device
 // C64 Programmer's Reference Guide Page 273
 
-	jmp SAVE
+	jmp SAVE_INT