diff --git a/STATUS.md b/STATUS.md
index 01af1e7c..d5178191 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -136,7 +136,7 @@ NOTE: Even the 'DONE' routines won't support features described as missing in on
 | `$FFE7`   | `$F32F`    | `CLALL`     | DONE     |                                                    |
 | `$FFEA`   |            | `UDTIM`     | DONE     |                                                    |
 | `$FFED`   |            | `SCREEN`    | DONE     |                                                    |
-| `$FFF0`   |            | `PLOT`      | PARTIAL  | cursor blink not handled                           |
+| `$FFF0`   | `$E50A`    | `PLOT`      | PARTIAL  | cursor blink not handled                           |
 | `$FFF3`   |            | `IOBASE`    | DONE     |                                                    |
 | `($FFFA)` |            | NMI vec     | PARTIAL  |                                                    |
 | `($FFFC)` |            | RESET vec   | PARTIAL  |                                                    |
@@ -150,16 +150,17 @@ Not all of them - only these we want to have implemented.
 
 <br />
 
-| Address   | Name              | Status   |  Remarks                                           |
-| :-------: | :---------------- | :------: | :------------------------------------------------: |
-| `$E544`   | clear screen      | DONE     |                                                    |
-| `$E5A0`   | setup VIC II & IO | PARTIAL  |                                                    |
-| `$EA31`   | default IRQ       | PARTIAL  |                                                    |
-| `$EA7E`   | ack CIA1 + below  | DONE     |                                                    |
-| `$EA81`   | ret from IRQ/NMI  | DONE     |                                                    |
-| `$FD30`   | default vectors   | DONE     |                                                    |
-| `$FE47`   | default NMI       | PARTIAL  |                                                    |
-| `$FE66`   | default BRK       | DONE     |                                                    |
-| `$FF80`   | revision byte     | DONE     |                                                    |
+| Address   | Name                | Status   |  Remarks                                           |
+| :-------: | :------------------ | :------: | :------------------------------------------------: |
+| `$E544`   | clear screen        | DONE     |                                                    |
+| `$E50C`   | set cursor position | PARTIAL  | cursor blink not handled                           |
+| `$E5A0`   | setup VIC II & IO   | PARTIAL  |                                                    |
+| `$EA31`   | default IRQ         | PARTIAL  |                                                    |
+| `$EA7E`   | ack CIA1 + below    | DONE     |                                                    |
+| `$EA81`   | ret from IRQ/NMI    | DONE     |                                                    |
+| `$FD30`   | default vectors     | DONE     |                                                    |
+| `$FE47`   | default NMI         | PARTIAL  |                                                    |
+| `$FE66`   | default BRK         | DONE     |                                                    |
+| `$FF80`   | revision byte       | DONE     |                                                    |
 
 <br />
diff --git a/bin/basic_mega65.rom b/bin/basic_mega65.rom
index 2b665a44..a8762c7b 100644
Binary files a/bin/basic_mega65.rom and b/bin/basic_mega65.rom differ
diff --git a/bin/kernal_generic.rom b/bin/kernal_generic.rom
index 95444870..722812e8 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 e6925302..b978c8a2 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 f2e21005..0eff723a 100644
Binary files a/bin/kernal_ultimate64.rom and b/bin/kernal_ultimate64.rom differ
diff --git a/c64/kernal/e50a.interop b/c64/kernal/e50a.interop
new file mode 100644
index 00000000..392ddf02
--- /dev/null
+++ b/c64/kernal/e50a.interop
@@ -0,0 +1,4 @@
+The original reason to move PLOT routine into its original position was to provide support for unofficial $E50C address:
+
+- it is well known: https://www.lemon64.com/forum/viewtopic.php?t=3296&amp%3Bstart=15
+- 'Duotris' game calls $E50C during startup screen initialization
diff --git a/c64/kernal/plot.s b/c64/kernal/e50a.plot.s
similarity index 64%
rename from c64/kernal/plot.s
rename to c64/kernal/e50a.plot.s
index 0f439cde..e72b33d2 100644
--- a/c64/kernal/plot.s
+++ b/c64/kernal/e50a.plot.s
@@ -11,6 +11,10 @@
 PLOT:
 	bcs plot_get
 
+	// Note: the 'set' part has to start from $E50C, as this is a known address
+	// - https://www.lemon64.com/forum/viewtopic.php?t=3296&amp%3Bstart=15
+	// - 'Duotris' game calls $E50C during startup screen initialization
+
 plot_set:
 	sty TBLX
 	stx PNTR
@@ -23,4 +27,3 @@ plot_get:
 	ldy TBLX
 	ldx PNTR
 	rts
-